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Dr. Krishna Gopakumar Warrier (Dr. K.G.K. Warrier)

CSIR-Emeritus Scientist,

Materials Science and Technology Division

National Institute for Interdisciplinary Science and Technology,

Council of Scientific and Industrial Research

Trivandrum -695 019 (India)

June 2014

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CURRICULUM VITAE

Dr. Krishna Gopakumar Warrier

Name & Designation Dr. K. Gopakumar Warrier (Dr. K.G.K. Warrier)

Chief Scientist (Retd), CSIR Emeritus Scientist

National Institute for Interdisciplinary Science and Technology,

Trivandrum - 695 019 (India)

Date of Birth 05-1-1950

Nationality Indian

Present Post CSIR - Emeritus Scientist

National Institute for Interdisciplinary Science and Technology

Institution with Address National Institute for Interdisciplinary Science and Technology

(Formerly Regional Research Laboratory)

Council of Scientific & Industrial Research,

Industrial Estate, P. O., Trivandrum,

Kerala- 695019 India

Tel/Fax +91- 471 2515280 / Fax No.: +91- 471 2491712

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Email warrierkgk@yahoo.com

Qualifications

M. Sc. (Chemistry), 1971 (Kanpur University), India

Ph. D. (Inorganic Chemistry), 1978 (University of Kerala)

Fellow Indian Institute of Ceramics (1995)

Experience

Scientist B (Sep, 1978) RRL, Trivandrum

Scientist C (Dec, 1982) RRL, Trivandrum (Direct Selection)

Scientist E1 (Apr, 1988) RRL, Trivandrum (Assessment)

Scientist E2 (Apr, 1991) RRL, Trivandrum (Merit Selection)

Scientist F (Apr, 1997) RRL, Trivandrum (Assessment)

Scientist G (Apr, 2003) NIIST (Assessment)

Scientist G (Feb. 2010- continues till Jan. 2012) – on extension

CSIR Emeritus Scientist (from 01 Feb, 2012- till date)

Awards & Fellowships

(1985)CSIR-DAAD Fellow at Max Planck Institute, Stuttgart, Germany

(1998)Visiting Scholar at Argonne National Laboratory, Argonne, Illinois, USA

(1995)Included in Marqui‘s who is who, 15th

Edition

(1995)Fellow, Indian Institute of Ceramics (Indian Ceramic Society)

(2012)Life time Science Achievement Award (Indian Society for Analytical Sciences)

(2013) CSIR- Emeritus fellowship

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Summary of Achievements during the period of service in CSIR

Scientific achievements:

Number of publications :

Last Five years:

Last Ten years

Patents

PhDs completed

PhDs on-going

Total projects carried out as Project Leader

Grant in aid

Sponsored

Consultancy

International Collaboration

Task force/Net work

260

73

94

07

16

04

32

08

05

11

06

02

Analysis of Quality of Publications:

Considered 207 publications in ISI

In 2011 citation being the highest for ISI journals [306 citations]

For all the years considered the best performances in 2011, 2012 and 2013.

Total number of citations from 1995-2014 :2413

Total h index :25(Calculated for 207 publications published

after 1995)

Most cited paper after 1998 : Structural modifications and associated

properties of lanthanum oxide doped sol gel

nano sized titanium oxide, Chemistry of

Materials, 14 (2002) 2876-2881.(161 times)

1995-2014 Total Citations :2413

Average citation for each publication :11.66

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Citations Graph:

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Positions Held

(1992)

Selected as Professor and Head, Ceramics Department, Anna University, Chennai

(Did Not Join, preferred to continue in CSIR)

(1995-2005) Director, Board of Directors, M/S Kerala Ceramics Ltd. (Govt. of Kerala)

(1997)

Technical Member, Expert Committee for Studying the Problems of Kerala Tile

Industry

(1998)

Invited Member, Expert Group Meeting (EGM), International Centre For Science

High Technology, Trieste, Italy (ICS, A Wing Of UNIDO)

(1999)

Coordinator, International Workshop on ―Building Ceramics from Industrial

Wastes‖, Sponsored by ICS (UNIDO), Trivandrum.

(1999-2004)

Secretary to the Research Council of RRL – Trivandrum, (In Addition To Regular

Scientific Work)

(2000)

Leader of a Delegation of Tile Industrialists from Kerala, to a Workshop on ―Best

Available Technologies for Ceramic and Glass Ceramic Production‖, Modena, Italy,

June, and Study Visits to Saccmi, Systems Etc in Italy

(2001)

Coordinator, International Training Course On ―Materials Design and Production

Processes‖ Sponsored by International Centre for Science & High Technology (ICS)

UNIDO, Trieste, Italy, (Trivandrum, March 27-31)

(2001-2003)

Chairman, Academic Programme Committee which is responsible for all the EMR

activity of RRL (Additional responsibility)

(2004-2006)

National Joint Secretary, Indian Ceramic Society, Kolkata, India and Advisor,

Editorial Board (2005-2007), Transactions of the Indian Ceramic Society

(2007)

Member of Indian Delegation to Paris, to discuss with US delegation, for

strengthening of cooperation between the two sides in the sub area Nanotechnology

under the High Technology Cooperation Group

(2007- 2011)

Member, Board of Studies, Cochin University of Science & Technology, Kerala

(2008- 2010)

Member, Board of Studies, Post Graduate Course in Nano Science & Nano

Technology, University of Kerala

(2008- 2011)

Core member in the selection committees of CSIR for scientists and their promotion

committees in the area of Materials/Ceramics.

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(Current)

Member, Board Studies of Kannur University, (Post Graduate Course in

Chemistry/Materials Science, Kerala

(Current)

National Executive member and member award committee, Indian Ceramic Society

Chairman, Kerala Chapter of the Indian Ceramic society

(Current)

Member, Advisory Committee, H&R Johnson R&D Centre, Mumbai

(Current)

Member, Research Advisory Board, JC Bose Centre for Research, TocH Institute of

Science & Technology, Kochi

(Current)

Core Member, DST-PAC on Technology Systems Group and member of Project

review committee of major projects.

Recognition as Ph. D. Supervising Guide (India)

Kerala University, Trivandrum (Kerala)

Cochin University, Kochi (Kerala)

Mahatma Gandhi University (Kerala)

Anna University, Chennai (Tamil Nadu)

Kannur University, Kannur, Kerala (India)

Ph. D. / M. Tech. /M. Sc. /B. Tech. Thesis Supervised (List of PhD students as Annex. I)

Ph. D. Completed : 16

Currently Supervising : 04

Project Fellows currently working : 01

M. Tech. (By Research) completed : 04

M. Tech/B. Tech/M. Sc. Projects : 66

Programmes Covered Under Extra Mural Research

Sol-Gel Alumina and Alumina-Nano Composites.

Sol-Gel High Surface Area Metal Oxides/Mixed Oxide Catalysts.

Sol-Gel Nano Titania Functional (Photocatalytic, Self-Cleaning) Films

Ultra and Nano Ceramic Membranes

Sub-Critically Dried Aerogels, Hydrophobic, hydrophilic functionalisation

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Rare Earth Phosphate (Monazite) Ceramics and composites.

Organic dye intercalated smectite eco friendly Nano Pigments

Anti algal, anti bacterial and anti algal surface coatings on terracotta and glazed tile surfaces

Anti fouling coatings on solar cell glass panels.

Journal Referee

Journal of the American Ceramic Society Journal of Colloids & Interface Science

Chemistry of Materials Langmuir

Journal of Materials Science Journal of Porous Materials

Journal of Materials Chemistry Journal of Sol-gel Science and Technology

The Journal of Physical Chemistry Crystal Growth & Design

Journal of Hazardous Materials Journal of Alloys & Compounds

Membership of Professional Scientific Societies

1. Life Member, Indian Ceramic Society

2. Life Member, Indian Institute of Metals.

3. Life Member, Materials Research Society of India (Member, Executive

Committee, Trivandrum Chapter)

Collaborators in Research during last 15 years

1. TNO Institute of Applied Research, The Netherlands

2. Technical University of Hamburg-Harburg, Germany

3. Technical University of Freiberg, Germany

4. The Open University, Milton Keyness, England, UK.

5. University of Wisconsin, Milwaukee, USA.

6. Nagoya Institute of Technology, Nagoya, Japan

7. Indian Rare Earths Ltd. Mumbai (India)

8. Bhabha Atomic Research Centre (BARC)

9. Bharat Heavy Electricals Limited (BHEL), Bangalore (India)

10. The Energy Resource Institute (TERI), New Delhi

11. Department of Industries & Commerce, Government of Kerala (India)

12. National Thermal Power Corporation (Ramagundam Power Plant) (India)

13. Kerala Tile Manufacture‘s Federation (India)

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Major Projects taken up for R&D

More than 32 Sponsored Projects were taken up in addition to CSIR funded in house/network

projects and carried out successfully over the last 25 years. The projects were sponsored from

Government agencies, Public Sector companies and also from Private sector. More than 9 projects

were carried out for industrial sector. In addition, short term consultancy projects were taken up as

process problems for industry.

Project area Sponsor Period

1. Metal Oxide Pillared Smectites Department of Science &

Technology 1988-‗92

2. Sol-gel Boehmite from aqueous precursors M/s Carborundum Universal Ltd

(Private sector) 1991-‗93

3. Sol Gel Alumina Abrasives M/s Carborundum Universal Ltd

(Private sector) 1993-‗95

4. Alumina-SiC nano composites DAAD, Germany (Indo-German) 1996-‗98

5. Nano size photo active titania TNO Institute of Applied

Research, Netherlands 1997-‗99

6. Densification of ceramics through liquid

phase sintering

TNO Institute of Applied

Research, Netherlands 1998-‗00

7. Ultra and Nano filtration ceramic

membranes through sol-gel route.

Volkswagen Foundation

(Germany) 1999-‗02

8. Surface morphology and wettability of sol-

gel titania nano coatings DST-DAAD (Indo-German) 2002-‗04

9. Aerogels by sub critical drying Defence Research Development

Organization (Govt. of India) 2001-‗05

10. A process for nano size Rare Earth

Phosphates

M/s Indian Rare Earths Ltd.,

Mumbai 2001-‗03

11. Alumina based low thermal expansion

composites

Department of Science &

Technology, (Govt. of India)

2003-‗06

12. Eco friendly titania nano coatings on

building components

Department of Industries, (Govt.

of Kerala) 2002-‗06

13. High volume liquid phase sintered fly ash

building components TIFAC (DST) (Govt. of India) 2004-‗06

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14. Surface modification on fly ash particles

for composites

University of Wisconsin,

Milwaukee, USA 2004-‗06

15.

Turn Key Pilot plant for Sol Gel Nano size

Rare Earth Phosphates.

(Extended up to 2011 and completed)

M/s Indian Rare Earths Ltd.

Mumbai (Public Sector). First in

the country

2007-‗10

Technology

transferred

16.

Semi commercial All Ceramic ultra

filtration membrane through nano and ultra

filtration titania functional coatings

Bharat Heavy Electricals Ltd.,

Bangalore (Public sector)

First in the country

2007-‗09

Technology

transferred

17.

Anti-bacterial and self-cleaning nano

coatings on glazed ceramic

Work extended till 2011 for optimisation

for technology transfer

Department of Science &

Technology (Govt. of India) First

in the country

2007-‗09

Technology

transfer

under

completion

18.

Photo catalytic nano coatings for value

addition to fly ash ceramics

Building Materials Technology

Promotion Council (Govt. of

India)

2007-‗10

19. Low Temperature UV curable nano

coatings on solar cell glass covers

Department of Science &

Technology, Govt. of India

(Supporting Industry: BHEL)

Ongoing

2010-13

20.

Development of high temperature nano

and mesoporous ceramics for thermal

management

CSIR Emeritus Project

Started from

February,

2012 till

January,

2015.

Consultancy Projects from Private Industry:

Turn-key project for setting up a Testing

& Quality Control Lab.

M/s KAP India Ltd. (Thrissur,

Kerala)

2000-‗01

Turn-key project for setting up a Testing

& Quality Control Lab and Training in

Ceramic Processing

M/s Baliapattom Tiles Ltd.

(Kannur, Kerala)

2002-‗03

Quality Control Lab for M/s St. Joseph‘s

Tiles (Angamaly, Kerala)

M/s St. Joseph‘s Tiles, Angamaly,

Kerala

2004-‗05

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Engineering consultancy to the nano rare

earth plant at M/s IREL.

M/s Indian Rare Earths Ltd.

Mumbai

2007-‗11

Setting up quality control laboratory and

training in ceramic processing

M/s Standard Bricks Ltd.

Bangalore

Completed 2010

Setting up Quality Control Laboratory and

Training in new product formulation.

M/s Anjaneya Tiles & Bricks,

Bangalore

Completed 2010

Process optimisation for high volume fly

ash ceramics for technology transfer.

NTPC Ramagundam Super

Thermal Power station, Hyderabad

Completed2010

Technology

transferred

Technology for C-Mox process for

utilisation of iron hydroxide by product

from ilmenite process industry

M/s Cochin Minerals and Rutiles,

Kochi

Completed 2010

and technology

transferred.

Feasible process development for resource

efficient bricks (REB) from North Indian

States

The Energy Resource Institute

(TERI) UNDP-GEF project

Completed 2011

and transferred

Feasibility of utilisation of Fly ash in

Stone ware ceramic body.

Spray coating technique for low

temperature curing titania hybrid coating

for solar cell covers for better performance

NTPC super power station,

Ramagundam

Bharat Heavy Electricals Ltd.

(CTI) Bangalore

Technology

document

transferred

2011

Demonstration

completed Jan

2012

Academic Experience

1) 5-6 Lectures for University Teachers in two sessions every year at the Kerala University and

Cochin University of Science & Technology

2) One week‘s lecture series on New Entrepreneurship programme in ceramics at the

Entrepreneurship Development Institute, Ahmedabad, India every year

3) Course lectures in advance ceramics and nano materials for the Masters in Materials in

Kannur University every year for the last four years.

4) Course lectures in Ceramic Engineering Department, Anna University, Chennai

5) Supervising MSc/B Tech/ M Tech projects from Universities

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List of PhD students- Included as Annex. I

List of Publications – Included as Annexure II

Patents - Included as Annexure – III

Books – Included as Annexure -IV

HIGHLIGHTS OF SELECTED AREAS OF RESEARCH

Chemical route for processing of materials, especially ceramic materials, has been the emphasis of

research. Sol-gel processing was identified as the most convenient and simple technique since this

technique has proven possibility for laboratory development and for scale up at pilot levels. The

major input has been the use of metal salts as starting materials in place of usually followed alkoxide

to make the process industrially viable. The synthesis of alumina sol gel abrasives, mullite,

aluminium titanate, nano composites, functional materials based on photo active titanium oxide, rare

earth phosphates, mesoporous materials like aero gels, nano coatings and ceramic membranes were

covered under various research programmes. Another area of significance has been the

developments carried out in clay and fly ash based traditional ceramics with active support from

industry. High volume fly ash consolidation through liquid phase sintering, anti algal coatings of

photo active titania on building components and electrical insulators and setting up of quality

control laboratories in tile and brick industry are such contributions. High lights of a few of the

above areas are presented in brief.

1. Sol-Gel Photocatalytic nano size Titanium oxide and nano coatings:

20-30 nm size anatase rich titanium oxide was synthesized by an aqueous sol-gel process involving

hydrolysis-peptisation of titanyl sulphate and further coating precursor was formulated. 100-200 nm

thick nano coatings were developed on glass and polymer surfaces and self cleaning property was

demonstrated through decomposition of methylene blue under exposure both to UV and natural sun

light. The efficiency of photo catalysis as well as the absorption band was modified by using

suitable dopants using sol-gel route. The titania sols were further coated on fired clay surfaces such

as terra cotta and also glazed tiles and the anti algal and self cleaning properties were also

demonstrated. The process is being transferred to a leading ceramic flooring tile industry.

During the last two years the above area of activity was extended to low temperature

polymer hybrid nano coatings which are cured by UV making such technology suitable for surface

coatings on solar cell covers and the project was sponsored by Bharat Heavy Electricals Ltd.

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Bangalore. A novel method based on sol-gel microwave was successfully developed for the low

temperature, crystalline anatase titania which is highly photoactive was developed during 2010-11

which was applied in the BHEL programme.

“Two PhD degrees were awarded, three are on going and technology is in the process of

transfer. More than 25 Project staff and students, including two from France, were trained in sol-

gel titania over the period. Collaboration with industry was also achieved in this area. The nano

titania programme was also supported by one project from TNO Netherlands and two programmes

from Germany (Volkswagen Foundation and DST-DAAD.) “

Photo active Titania being coated on to ceramic substrates by spray technique, the colour removal

takes place under exposure to sun light for the modified titania composition within 2 hrs.

2. Nano Rare Earth Phosphates for coatings and composites:

Rare earth phosphates were found to possess high melting points above 1900 oC and attempts to

prepare stoichiometric rare earth phosphates were made by many researchers. Other properties

identified on such phosphates are low thermal conductivity, thermal expansion equal to alumina,

non reactivity with many high temperature oxides and many molten metals and low hardness

compared to many ceramic materials. In view of this, a total programme was initiated for the

synthesis of nano size rare earths phosphates by sol-gel process and to design products for

applications such as machinable ceramics, metal melting crucibles and molten metal handling

systems, thermal barrier coating and luminescent materials after suitable doping. There is

considerable industrial potential in this area.

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Based on the laboratory level findings, the process was scaled up by setting up a semi commercial

plant for producing 10 kg of rare earth phosphate nano particles and stable suspensions under

financial support from M/s Indian Rare Earths Ltd. Mumbai in the campus of Indian rare Earths

Research Centre, Kollam, Kerala. The plant is equipped with a precipitator, sol reactor, centrifuge

and spray calciner. Rare earth phosphates in the size range 40-200 nm can be made as per

requirement. This plant is also capable of making other nano particles of titania, zirconia, zinc oxide

etc.

“One PhD degree and four project staff are trained in the project in addition to many

project students. The first nano rare earth phosphate production plant fully funded by M/s Indian

Rare Earths Ltd., based on the above process, was handed over to the company in Kollam, Kerala

in September, 2010”.

Plant based on sol-gel technology for nano size rare earth phosphate set up at IREL, Kollam

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3. Ceramic Ultra and nano filtration system for industrial water recycling:

Ceramic membrane system consists of a micro porous tubular alumina substrate inside which is

coated with nano particle dispersions having controlled particle size distribution in order to obtain

the desired pore distribution and high flux rates in filtration. Under this project, multichannel (19

channels) tubular substrates made by BHEL were coated with designed sol precursors to reduce the

initial pore size of 1300 nm to less than 50 nm. Repeated tests on particle distribution, pore

distribution, layer thickness, flux rate, repeatability of the membrane elements and adhesion of the

layers with the substrate were optimized in the laboratory scale and transferred the process to BHEL.

A ceramic membrane plant has been designed and fabricated at BHEL campus in Bangalore

involving the engineering inputs from BHEL to recycle the water coming oft of the ceramic

processing plant to the tune of 15 m3/hr. .

Developed complete flow sheet for ultra-filtration multichannel 1 meter long ceramic membrane

elements, which were further translated to demonstration plant at BHEL, Bangalore (In

collaboration)

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4. Silica and titania aerogels and composites synthesized through non

supercritical route:

Aerogels have attracted considerable attraction from various applications in view of the large

mesoporous structure and high porosity often above 90%. Silica has been one of most widely

investigated aerogel. The usual method of synthesis is by hydrolysis-condensation of silicon

alkoxide followed by supercritically removing the solvent from the pores. However alternate

methods of synthesis have been sought for although the well practiced technique is still supercritical

drying. Silica and mixed oxide aerogels were synthesized through a non supercritical drying route,

typically sub critical route where the solvent is extracted repeatedly by solvent followed by gel wall

strengthening by aging process in silicon alkoxide monomer. Such aerogels were further modified

either functionalisation for hydrophobic/hydrophilic character or as inorganic-organic hybrids. Such

precursors were also coated on various substrates for properties of photo catalysis, abrasion

resistance or also non wetting behaviour. Titania and silica aerogels have shown specific surface

areas in the range 600-1100 m2/g and pore size 3-10 nm.

“The work in the aerogel area resulted in 3 PhD degrees and many students were trained in

the technique under short term projects. The possibility of scaling up the process for aerogel

microspheres for applications in spray coating over heat exchangers and hot gas chimneys is being

explored with BHEL”.

4. Application of advance materials research to societal materials:

The concept of self cleaning nano size anatase titania coatings were applied to clay based

building components such as terra cotta roofing and facing tiles and the algal growth which is one of

the major concerns for ages in terra cotta roofing‘s could be effectively prevented. The nano

coatings are transparent since the thickness is <150 nm. The concept was demonstrated in large

scale trials and also in actual construction. The technology is being transferred for regular

production by tile sector.

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5. Flux Bonded High Volume Fly Ash Building components:

Building materials based on natural clays as raw materials have been used for centuries and with the

large scale building and construction activities, large scale mining of such resources have become a

concern of environment. Alternate raw materials for building components such as bricks, tiles and

pavements are being sought for in all the countries. One of the approaches in this line is to utlilise

solid industrial by products.

One of such materials is coal ash or fly ash which is formed as a residue in coal burning in

boilers, coal based thermal power plants etc. and possess a dark grey colour. In many countries

including India, the disposal of this ash is a serious problem. The ash consists mainly silica in

submicron to micron size and has low bulk density. Many processes are available for binding the

fly ash to solid products, each having certain draw backs including the black colour. The current

process is based on liquid phase sintering where a glass is generated in situ when fly ash is sintered

in presence of a glass former. Bright red bricks and tiles having excellent strength and durability

were made where the fly ash is as high as 80% by weight and the process is successfully

demonstrated on semi commercial scale. Process was optimised for NTPC Ramagundam Super

Thermal Power plant and NTPC has shown interest in promoting the technology.

6. Organic Dye Intercalated UV Stable, Smectite Natural Nano Pigments

Currently used dyes in polymer and plastics industry are organic in nature which is easily degraded

by exposure to UV or sunlight. Further this also accelerates the degradation of plastics when

exposed for long in light. However, it has been reported that when organic dyes are intercalated in

the interlayer spacing of the layered alumino silicates typically smectites/montmorillonites, the

stability to light is increased to about 10 times. Various dyes such as methylene blue, rhodamine-G

and others were successfully intercalated in montmorillonite clay and the stability of such dyes was

investigated. These were further incorporated in polymers and the stabilities were compared with

the usual products and the stability was increased by more than 8 times. The dye intercalated clay

nano pigment is an eco friendly reinforcing additive to plastics.

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Figures: a) Particle size distribution of titania sol, average particle size ~30 nm, b) TEM of

nanocrystalline Titania, c) Photoactive titania coated ceramic tile (self-cleaning), d) Titania coated

glass substrate, e) SEM image of a titania coating, f) AFM image of the titania coating, g)

Demonstration of self-cleaning property of a titania coated roofing tile (after weathering for 6

months), h) Fly ash building materials i) Demonstration building constructed out of ecofriendly

alternate raw material products j) Intercalated clay based ecofriendly pigments k) Eco friendly

pigment coloured polymer sheets l) Machinable ceramics based on rare earth phosphates m)

Lanthanum phosphate crucibles n) Thermal barrier coatings using lanthanum phosphate o)

Hydrophobic silica aerogels floating on water p) Porous channeled tubes for water filtration q) Set

up for water filtration studies r) titania coating on electrical insulators s) Rare earth phosphors

(luminescence on UV irradiation) t) Titania nanocoatings on porous ceramic tubes (SEM) u) Silica-

Titania composite aerogels v) Aerogel microspheres w) Hydrophobic self-cleaning cloth (silica

coated).

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Annexure I

List of PhD. Theses

1. Smitha V.S, Cochin University of Science and Technology, 2014

2. Jaimy baby, University of Kerala, 2014

3. Tomy James, Structural evolution and surface characteristics of metal ion doped and sol gel

derived alumina from boehmite, Mahatma Gandhi University 2010

4. M. Jayasankar ,Sol gel alumina Nano composites for functional applications, Cochin

University of Science and Technology, 2009

5. Smitha Sasidharan, Sol-Gel Mesoporous Silica Aerogels And bio hybrids for Functional

applications, Cochin University of Science and Technology, 2009

6. P. Shajesh, Organically modified sol gel derived siloxane networks: mesoporous, hybrid

aerogels through ambient pressure drying, Cochin University of Science and Technology,

2009

7. P.R. Aravind, Mixed oxide silica aerogels synthesised through non – supercritical route for

Functional applications, Cochin University of Science and Technology, 2008

8. K.V. Baiju, Aqueous Sol Gel Process For Nano Crystalline Photocatalytic Titania,

Transparent Functional Coatings And Ceramic Membrane, Cochin University of Science

and Technology, 2008.

9. K. Rajesh, Nano crystalline RE Phosphates particles coating and composites through

aqueous Sol-Gel processes, University of Kerala, 2007.

10. C.P. Sibu, Sol gel nanocrystalline titania powders and functional coatings, Cochin

University of Science and Technology, 2004.

11. S. Rajesh Kumar, High surface area porous sol gel silica and mixed oxide aero gels through

sub critical drying, University of Kerala, 2002.

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12. P. Padmaja, Sol-gel high surface area nanosize alumina and alumina mixed oxide, Mahatma

Gandhi University, 2002.

13. U.S. Hareesh, Chemical synthesis of sol gel alumina silicon carbide and composites,

Mahatma Gandhi University, 2000.

14. B. Sivakumar, Novel synthesis route for high surface area metal oxide pillared

montmorillonite, University of Kerala, 1996.

15. G.M. Anilkumar, Investigations on sol-gel mullite and mullite-silicon carbide

nanocomposite precursor, Mahatma Gandhi University, 1999.

16. P.R. HarikrishnaVarma, Studies on chemical methods of preparation of fine ceramic

powders, University of Kerala, 1992.

17. T.V. Mani, Sol Gel Synthesis of oxide Particulate Ceramics, University of Kerala, 1994.

18. Jalajakumari, Studies on clay (kainite) polymer composites. University of Kerala, 1989.

Annexure II

List of Publications

1. Bifunctional lanthanum phosphate substrates as novel adsorbents and biocatalysts supports for

perchlorate removal, Sankar, S, Prajeesh GPV, Anupama VN, Krishnakumar B, Hareesh P, Nair

BN, K.G.K.Warrier, US, Hareesh, Journal of Hazardous materials,(2014), 275, 222-229

2. Antifungal properties of nanosize ZnS particles synthesised by sonochemical precipitation,

Suyana, P.; Kumar, S. Nishanth; Kumar, B. S. Dileep; S C pillai, BN Nair, Mohamed, Peer A,

K.G.K.Warrier, Hareesh, Unnikrishnan Nair Saraswathy, RSC Advances (2014) 4 (17) 8439-

8445

3. Effect of precursor particle size distribution on the morphology and low wetting behavior of

photocatalytic nanocoatings on glass surfaces, Smitha, Venu Sreekala; Francois, Petit; Hareesh,

Unnikrishnan Nair Saraswathy, K.G.K.Warrier, Journal of Materials Chemistry A ,(2013)

1 (39) 12178-12187

4. UV curable hydrophobic inorganic-organic hybrid coating on solar cell covers for

photocatalytic self-cleaning application, Smitha, Venu Sreekala; Jaimy, Kanakkanmavudy B.;

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Shajesh, Palantavida, Jeena J.K, K.G.K.Warrier, Journal of Materials Chemistry A (2013)

40 12641-12649

5. A hybrid sol-gel approach for novel photoactive and hydrophobic titania coatings on aluminium

metal surfaces, Manjumol, K. A.; Mini, L.; Mohamed, A. Peer; K.G.K.Warrier, RSC

Advances (2013) 3 (39) 18062-18070

6. Novel multifunctional titania-silica-lanthanum phosphate nanocomposite coatings through an

all aqueous sol-gel process, Smitha, Venu Sreekala; Jyothi, Chembolli Kunhatta; Mohamed,

Peer A., Pillai Saju, K.G.K.Warrier, Dalton Transactions (2013)42 (13) 4602-4612

7. Silica-Based NTPC-Fly Ash for Dye-Removal Application and Effect of Its Modification, Babu,

Babitha K.; Purayil, Jeena Vadakke; Padinhattatyil, Hareesh; K.G.K.Warrier ; S. Shukla,

International Journal of Applied Ceramic Technology (2013) 10(1)186-201

8. Enhanced visible light activity of nano-titanium dioxide doped with multiple ions: Effect of

crystal defects, Kanakkanmavudi, B. Jaimy, Swapankumar Ghosh, K.G.K.Warrier, Journal of

Solid State Chemistry,(2012)196, 465-470,

9. Room temperature synthesis of high temperature stable lanthanum phosphate-yttria nano

composite, Sankar, S., Raj, A.N., Jyothi, C.K.,Warrier, K.G.K., Padmanabhan, P.V.A,

Materials Research Bulletin, (2012), 47 (7), 1835-1837

10. New insights on physico- chemical transformations of ZnO; from clustered multipods to single

crystalline nanoplates, Anas, S., Mahesh, K.V., Ambily, K.J.,Chandran, M.R., Uma, K., Warrier,

K.G.K., Ananthakumar, S., 2012, Materials Chemistry and Physics (2012), 134 (1), 435-442

11. A novel approach for enhanced visible light activity in doped nanosize titanium dioxide through

the excitons trapping Kanakkanmavudi, B.Jaimy, K.V.Baiju, Swapankumar Ghosh,

K.G.K.Warrier, Journal of Solid State Chemistry, (2012), 86 , 149-157

12. Hydrophobic, Photoactive Titania–Alumina Nanocrystallites and Coatings by an Aqueous Sol–

Gel Process Venu Sreekala Smitha, Kizhakkekilikoodayil Vijayan Baiju, Petchimuthu Perumal,

Swapankumar Ghosh, and K G K Warrier, European Journal of Inorganic Chemistry 2012,

226–233.

13. High surface area neodymium phosphate nano particles by modified sol-gel method ,

Sasidharan Sankar, K.G.K Warrier and Rajesh Komban, Materials Research Bulletin 2011, 46

(12) 2373-2377

22

14. Investigations on the effect of experimental parameters on the porosity features of silica

aerogels synthesized at ambient drying conditions, P Smitha, P Shajesh, K G K Warrier,

Materials Chemistry and Physics 2011, 131(1-2) 507- 511.

15. Morphology-Dependent Correlation Between Photoluminescence and Photocatalytic Activity of

Anatase–Titania Photocatalyst, N. Harsha, R. Priya, K. R. Ranya, S. Shukla, S. Biju, M. L. P.

Reddy, and K. G. K. Warrier, Nanoscience and Nanotechnology Letters 3, 2011, 1-6.

16. Rhodamine 6G Intercalated Montmorillonite Nanopigments–Polyethylene Composites: Facile

Synthesis and Ultraviolet Stability Study, Venu Sreekala Smitha, Kochupurayil Appukuttannair

Manjumol, Swapankumar Ghosh, Mathalayil Brahmakumar, Chorappan Pavithran, Petchimuthu

Perumal, and K G K Warrier, Journal of the American Ceramic Society, 94 (6) 2011, 1731–

1736.

17. Calcination and associated structural modifications in boehmite and their influence on high

temperature densification of alumina Nampi, P.P., Ghosh, S., Warrier, K.G. Ceramics

International, 37, 2011, 3329–3334.

18. Titania-lanthanum phosphate photoactive and hydrophobic new generation catalyst, Chembolli

K. Jyothi, Kanakkanmavudi B. Jaimy, Swapankumar Ghosh, Sasidharan Sankar, V.S. Smitha

and K.G.K. Warrier, Journal of Solid State Chemistry 184, 2011, 1867–1874.

19. Low Temperature Needle like Mullite Grain formation in Sol-Gel Precursors Coated on SiC

Porous Substrates , M. Jayasankar, G.M. Anilkumar, V.S. Smitha, P. Mukundan, C.D.

Madhusoodana and K.G.K. Warrier, Thin Solid Films, 519, 2011, 7672–7676.

20. An 'Eco-friendly' all aqueous sol gel process for multi-functional ultra-filtration membrane on

porous tubular alumina substrate , Manjumol, K.A., Shajesh, P., Baiju, K.V., Warrier, K.G.K.,

Journal of Membrane Science 375 (1-2), 2011, 134-140

21. An aqueous sol-gel synthesis of chromium (III) doped mesoporous titanium dioxide for visible

light photocatalysis Jaimy, K.B., Ghosh, S., Sankar, S., Warrier, K.G.K., Materials Research

Bulletin 46 (6), 2011, 914-921

22. Aqueous sol-gel synthesis of lanthanum phosphate nano rods starting from lanthanum chloride

precursor Sankar, S., Warrier, K.G. Journal of Sol-Gel Science and Technology 58 (1), 2011,

195-200

23

23. Effect of silver and palladium on dye-removal characteristics of anatase-titania nanotubes.

Harsha, N., Ranya, R., Shukla, S., Biju, S., Reddy, M.L., Warrier, K.G. Journal of

nanoscience and nanotechnology 11 (3), 2011. 2440-2449

24. High-surface-area alumina-silica nanocatalysts prepared by a hybrid sol-gel route using a

boehmite precursor Nampi, P.P., Moothetty, P., Wunderlich, W., Berry, F.J., Mortimer, M.,

Creamer, N.J., Warrier, K.G. Journal of the American Ceramic Society 93 (12), 2010, 4047-

4052

25. Magnetic dye-adsorbent catalyst: A "core-shell" nanocomposite Shukla, S., Vanna, M.R.,

Suresh, S., Warrier, K.G.K. Nanotechnology 2010: Advanced Materials, CNTs, Particles,

Films and Composites - Technical Proceedings of the 2010 NSTI Nanotechnology Conference

and Expo, NSTI-Nanotech 2010 1, pp. 830-833

26. Role of particle size of alumina on the formation of aluminium titanate as well as on sintering

and microstructure development in sol-gel alumina-aluminium titanate composites Jayasankar,

M., Hima, K.P., Ananthakumar, S., Mukundan, P., Pillai, P.K., Warrier, K.G.K. Materials

Chemistry and Physics 124 (1), 2010, 92-96

27. Magnetic dye-adsorbent catalyst: Processing, characterization, and application Thazhe, L.,

Shereef, A., Shukla, S., Pattelath Reshmi, C., Varma, M.R., Suresh, K.G., Patil, K., Warrier,

K.G. Journal of the American Ceramic Society 93 (11), 2010, 3642-3650

28. Mesoporous gadolinium doped titania photocatalyst through an aqueous sol-gel method Baiju,

K.V., Periyat, P., Shajesh, P., Wunderlich, W., Manjumol, K.A., Smitha, V.S., Jaimy, K.B.,

Warrier, K.G.K. Journal of Alloys and Compounds 505 (1), 2010. 194-200

29. Aluminosilicates with varying alumina-silica ratios: Synthesis via a hybrid sol-gel route and

structural characterisation Nampi, P.P., Moothetty, P., Berry, F.J., Mortimer, M., Warrier, K.G.

Dalton Transactions 39 (21), 2010. 5101-5107

30. Ambient pressure drying: A successful approach for the preparation of silica and silica based

mixed oxide aerogels Aravind, P.R., Shajesh, P., Soraru, G.D., Warrier, K.G.K. Journal of

Sol-Gel Science and Technology 54 (1), 2010 , 105-117

31. Sol-gel route to synthesize titania-silica nano precursors for photoactive particulates and

coatings Smitha, V.S., Manjumol, K.A., Baiju, K.V., Ghosh, S., Perumal, P., Warrier, K.G.K.

Journal of Sol-Gel Science and Technology, 54 ( 2) 2010 , 203-211

24

32. Synthesis of lanthanum oxide doped photocatalytic nano titanium oxide through aqueous sol-gel

method for titania multifunctional ultrafiltration membrane Manjumol, K.A., Smitha, V.S.,

Shajesh, P., Baiju, K.V., Warrier, K.G.K. Journal of Sol-Gel Science and Technology 53 (2),

2010 , 353-358

33. Silica-titania aerogel monoliths with large pore volume and surface area by ambient pressure

drying Aravind, P.R., Shajesh, P., Mukundan, P., Warrier, K.G.K. Journal of Sol-Gel Science

and Technology 52 (3), 2009. 328-334

34. Microstructure and high temperature deformation characteristics of sol-gel derived aluminium

titanate-mullite composites Ananthakumar, S., Jayasankar, M., Warrier, K.G.K. Materials

Chemistry and Physics 117 (2-3), 2009 359-364

35. High surface area sol-gel alumina-titania nanocatalyst Padmaja, P., Warrier, K.G.K.,

Padmanabhan, M., Wunderlich, W. Journal of Sol-Gel Science and Technology 52 (1), 2009,

88-96

36. Morphology-dependent dye-removal mechanism as observed for anatase-titania photocatalyst

Baiju, K.V., Shukla, S., Biju, S., Reddy, M.L.P., Warrier, K.G.K. Catalysis Letters 131 (3-4),

2009, 663-671

37. Pulsed laser deposition of lanthanum phosphate protective films ,Sinha, S., Kutty, T.R.G.,

Padmanabhan, P.V.A., Warrier, K.G.K. Journal of Laser Applications 21 (3), 2009 , 149-153

38. Synthesis, Structure and Properties of Cross linked, R(SiO1.5)/SiO2 (R=3-glycidoxypropyl)

Porous Organic-Inorganic Hybrid Networks Dried at Ambient Pressure, P. Shajesh, S. Smitha,

P. R. Aravind and K. G. K. Warrier, Journal of Colloid and Interface Science 336 (2), 2009,

691-697

39. Correlating Photoluminescence and Photocatalytic Activity of Mixed-phase Nanocrystalline

Titania, Baiju, K.V., Zachariah, A., Shukla, S., Biju, S., Reddy, M.L.P., Warrier, K.G.K.

Catalysis Letters 130 (1-2), 2009, 130-136

40. Effect of 3-glycidoxypropyltrimethoxysilane Precursor on an Ambient Pressure Process for

Silica Aerogels, P. Shajesh, S. Smitha, P. R. Aravind and K. G. K. Warrier Journal of Sol-Gel

Science and Technology 50 (3), 2009, 353-358

41. Novel electro less process for copper coating of flyash using titania/ultraviolet-radiation/metal

catalyst-system , Shijitha, T, Baiju, K.V., Shukla, S., Biju, S., Reddy, M.L.P., Patil, K.R.,

Warrier, K.G.K. Applied surface science 255(13-14), 2009,6696-6700.

25

42. Enhanced Solar-Radiation Induced Photocatalytic Activity of Surface-Modified Nanocrystalline

Anatase-Titania, Priya R., Baiju K.V., Shukla S., Biju, S. Reddy M.L.P. , Patil K.R., Warrier

K.G.K. Catalysis Letters 128 (1-2), 2009,137-143

43. Comparing Ultraviolet and Chemical Reduction Techniques for Enhancing Photo catalytic

Activity of Silver Oxide /Silver Deposited Nanocrystalline Anatase Titania, R. Priya, K.V.

Baiju, S. Shukla, S. Biju, M.LP. Reddy, K. Patel and K.G.K. Warrier, Journal of Physical

Chemistry C , 113(15) 2009, 6243-6255

44. Thermally stable nanophase anatase titania with mesoporous texture by pseudo-inorganic

templating Moore, S.A., Sibu, C.P., Wu nderlich, W., Shajesh, P., Baiju, K.V., Berry, F.J.,

Warrier, K.G.K. Microporous and Mesoporous Materials, 120(3),2009,467-471

45. K.V. Baiju, S. Shukla, S. Biju, M.L.P. Reddy, K.G.K. Warrier, Hydrothermal processing of

dye-adsorbing one-dimensional hydrogen titanate, Materials Letters, 63 (11),2009, 923-926

46. Role of surface-purity in photocatalytic activity of nanocrystalline anatase-titania processed via

polymer-modified sol-gel Baiju, K.V., Shukla, S., Sandhya, K.S., James, J., Warrier, K.G.K.

Journal of Sol-Gel Science and Technology 45 (2), 2008,165-178,

47. High temperature stable mesoporous anatase TiO2 photocatalyst achieved by silica

addition Periyat, P., Baiju, K.V., Mukundan, P., Pillai, P.K., Warrier, K.G.K. Applied Catalysis

A: General 349 (1-2), 2008,13-19,

48. Synergistic effect in photo catalysis as observed for mixed-phase nanocrystalline titania

processed via sol-gel solvent mixing and calcinations, Zachariah, A., Baiju, K.V., Shukla, S.

Deepa, K.S., James, J, Warrier, K.G.K., Journal of Physical Chemistry C 112(30),2008,11345-

11356

49. M. Jayasankar, S. Ananthakumar, P. Mukundan, W. Wunderlich, K.G.K. Warrier Al2O3 @

TiO2—A simple sol–gel strategy to the synthesis of low temperature sintered alumina–

aluminium titanate composites through a core–shell approach Journal of Solid State Chemistry,

181( 10) ,2008, 2748-2754

50. Baiju, K.V., Shukla, S., Sandhya, K.S., James, J., Warrier, K.G.K. Role of surface-purity in

photocatalytic activity of nanocrystalline anatase-titania processed via polymer-modified sol-

gel, Journal of Sol-Gel Science and Technology 45 (2) 2008, 165-178

26

51. Sajan D. George, Aji A. Anappara, P.R.S. Warrier, K.G.K. Warrier, P. Radhakrishnan, V.P.N.

Nampoothiri, C.P.G. Vallabhan, ―Photoacoustic thermal characterization of Al2O3–Ag ceramic

nanocomposites―, Materials Chemistry and Physics, 111 (1) 2008, 38-41

52. Pradeepan Periyat, Baiju Vijayan, Krishnapillai P, Mukundan P, Krishna Gopakumara Warrier,

―High temperature stable mesoporous anatase TiO2 photo catalyst by silica addition‖, Applied

Catalysis A,349,2008,13-19

53. S. Smitha, P. Shajesh, Mukundan, P., and K.G.K Warrier, ―Sol-gel synthesis of biocompatible

silica-chitosan hybrids and hydrophobic coatings‖, Journal of Materials Research, 23 (8)

2008,2053-2060

54. Smitha. S, Shajesh, Mukundan, P., P. and K.G.K Warrier, ―Synthesis of Mesoporous

Hydrophobic Silica Microspheres Through a Modified Sol-Emulsion-Gel Process‖, Journal of

Sol-Gel Science and Technology,48 2008, 356-361

55. Rajesh Komban, Mukundan P, Krishna Gopakumara Warrier, ―High Surface Area

Mesoporous Nanocrystalline Lanthanum Phosphate Nano rod through a Sol Gel Process -

Effect of Alcohol Washing on a Non-oxide Gel‖, Microporous Mesoporous Materials, 116,

2008, 693-697

56. Rajesh Komban, Mukundan P, Krishna Gopa kumara Warrier, ―A Facile Aqueous Sol-Gel

Process for Synthesis of Alumina-Lanthanum Phosphate Nanocomposite‖, Journal of American

Ceramic Society, 91 (7) 2008, 2415-2418

57. Aravind, P.R., Shajesh, P., Mukundan, P., Krishna Pillai, P., Warrier, K.G.K., ―Non-

supercritically dried silica-silica composite aerogel and its possible application for confining

simulated nuclear wastes‖, Journal of Sol-Gel Science and Technology, 46 (2) 2008, 146-151

58. Aravind, P.R. Shajesh, P. Smitha, S. Mukundan, P. Warrier, K.G.K. ―Nonsupercritically dried

silica-alumina aerogels - Effect of gelation pH‖, Journal of the American Ceramic Society, 91

(4) 2008,1326-1328

59. Baiju, K. V. Shajesh, P. Wunderlich, W. Mukundan, P. Kumar, S. R. and Warrier, K. G. K.,

―Effect of tantalum addition on anatase phase stability and photoactivity of aqueous sol-gel

derived mesoporous titania‖, Journal of Molecular Catalysis A – Chemical, 276 (1-2) 2007, 41-

46

60. Mani, J. Ananthakumar, S. Mukundan, P. and Warrier, K.G.K., ―Low-temperature fine-grained

alumia-aluminum titanate composites produced from a titania-coated alumina precursor‖,

Journal of the American Ceramic Society, 90 (10) 2007, 3091-3094

27

61. Periyat, P. Baiju, K.V. Mukundan, P. Krishna Pillai, P. and Warrier, K.G.K., ―Aqueous

colloidal sol-gel route to synthesize nanosized ceria-doped titania having high surface area and

increased anatase phase stability‖, Journal of Sol-Gel Science and Technology, 43(3) 2007, 299-

304

62. Rajesh, K. Shajesh, P. Seidel, O. Mukundan, P. and Warrier, K.G.K., ―A facile sol-gel strategy

for the synthesis of rod-shaped, nanocrystalline, high-surface-area lanthanum phosphate

powders and nanocoatings‖, Advanced Functional Materials, 17(10) 2007, 1682-1690

63. Smitha, S. Mukundan, P. Krishna Pillai, P. and Warrier, K.G.K., ―Silica-gelatin bio-hybrid and

transparent nano-coatings through sol-gel technique‖, Materials Chemistry and Physics, 103

(2-3) 2007, 318-322

64. Baiju, K. V. Shukla, S. Sandhya, K.S. James, J. and Warrier, K.G.K., ―Photocatalytic activity of

sol-gel-derived nanocrystalline Titania‖, Journal of Physical Chemistry C, 111(21) 2007, 7612-

7622

65. James, T. Padmanabhan, M. Warrier, K.G.K. and Sugunan, S. ―CuAl2O4

formation and its effect on α-Al2O3 phase evolution on calcination of metal ion doped boehmite

xerogels‖, Materials Chemistry and Physics, 103 (2-3) 2007, 248-254

66. Jayasankar, M. Ananthakumar, S. Mukundan, P. and Warrier, K.G.K., ―Low temperature

synthesis of aluminium titanate by an aqueous sol-gel route‖ Materials Letters, 61 (3) 2007,

790-793

67. Aravind, P.R. Sithara, L. Mukundan, P. Krishna Pillai, P. and Warrier, K.G.K., ―Silica alcogels

for possible nuclear waste confinement - A simulated study‖, Materials Letters, 61 (11-12)

2007,2398-2401

68. Baiju, K.V. Periyat, P. Krishna Pillai, P. Mukundan, P. Warrier, K.G.K. and Wunderlich, W.,

―Enhanced photoactivity and anatase thermal stability of silica-alumina mixed oxide additives

on sol-gel nanocrystalline titania‖, Materials Letters, 61 (8-9) 2007, 1751-1755

69. Smitha, S. Shajesh, Mukundan, P., P. and Warrier, K.G.K., ―Antiwetting silica-gelatin

nanohybrid and transparent nano coatings synthesized through an aqueous sol-gel process‖,

Journal of Sol-Gel Science and Technology, 42(2) 2007, 157-163

70. Smitha, S. Shajesh, Mukundan, P., P. Nair, T.D.R. and Warrier, K.G.K., ―Synthesis of

biocompatible hydrophobic silica-gelatin nano-hybrid by sol-gel process‖, Colloids and

Surfaces B: Biointerfaces,55 (1) 2007, 38-43

28

71. Smitha, S. Shajesh, P. Kumar, S. R. Krishna Pillai, P. and Warrier, K.G.K., ―Effect of aging

temperature on the porosity characteristics of subcritically dried silica aerogels‖, Journal of

Porous Materials, 14 (1) 2007, 286-292

72. George, S. D. Rajesh Komban Warrier, K.G.K. Radhakrishnan, P. Nampoori, V. P.N. and

Vallabhan, C.P.G., ―Photo acoustic thermal characterization of porous rare-earth phosphate

ceramics‖, International Journal of Thermo physics, 28 (1) 2007, 123-132

73. Mani, J. Ananthakumar, S. Mukundan, P. and Warrier, K.G.K., ―Low Temperature Synthesis

of Aluminium Titanate by an Aqueous Sol-Gel Route‖, Materials Letters, 61 (3) 2007, 790-793

74. Aravind, P.R. Mukundan, P. Krishna Pillai, P. Warrier, K.G.K., ―Mesoporous silica-alumina

aerogels with high thermal pore stability through hybrid sol-gel route followed by Subcritical

drying‖, Microporous and Mesoporous Materials, 96 (1-3) 2006, 14-20

75. Padmanabhan, P.V.A. Sreekumar, K.P. Thiyagarajan, T.K. Satpute, R.U. Bhanumurthy, K.

Sengupta, P. Dey, G.K. and Warrier, K.G.K., ―Nano-crystalline titanium dioxide formed by

reactive plasma synthesis‖ , Vacuum, 80 (11-12) 2006, 1252-1255

76. Smitha, S. Shajesh, P. Aravind, P.R. Rajesh Kumar, S. Krishna Pillai, P. and Warrier, K.G.K.,

―Effect of aging time and concentration of aging solution on the porosity characteristics of

subcritically dried silica aerogels‖, Microporous and Mesoporous Materials, 91 (1-3) 2006,

286-292

77. Ananthakumar, S. Jayasankar, M. and Warrier, K.G.K., ―Microstructural, mechanical and

thermal characterisation of sol–gel-derived aluminium titanate–mullite ceramic composites‖,

Acta Materialia, 54 (11) 2006, 2965-2973

78. Padmaja, P. Warrier, K.G.K. Padmanabhan, M. Wunderlich, W. Berry, F.J. Mortimer, M.

Creamer, N.J., ―Structural aspects and porosity features of nano-size high surface area alumina-

silica mixed oxide catalyst generated through hybrid sol-gel route‖, Materials Chemistry and

Physics, 95(1) 2006, 56-61

79. Baiju, K.V. Sibu, C.P. Rajesh, K. Krishna Pillai, Mukundan, P., P. Warrier, K.G.K. and

Wunderlich, W., ―An aqueous sol–gel route to synthesize nanosized lanthana-doped titania

having an increased anatase phase stability for photocatalytic application‖, Materials Chemistry

and Physics, 90 (1) 2005, 123-127

80. Warrier, K.G.K., Rajesh, K., Rohith, R., Nair, V.R., ―Novel functional and high temperature

applications of nanocrystalline rare earth phosphate coatings and composites‖, TMS Light

Metals, 2005, 1167-1175

29

81. Padmaja, P. Krishna Pillai, P. Warrier, K.G.K. and Padmanabhan, M., ―Adsorption isotherm

and pore characteristics of nano alumina derived from sol-gel boehmite‖, Journal of Porous

Materials, 11 2004, 147-155

82. Ananthakumar, S. Manohar, P. Warrier, K.G.K., ―Effect of boehmite and organic binders on

extrusion of alumina‖ , Ceramics International, 30 (6) 2004, 837-842

83. Hareesh, U.N.S. Sternitzke, M. Janssen, R. Claussen, N. Warrier, K.G.K ―Processing and

properties of sol-gel-derived alumina/silicon carbide nanocomposites‖, Journal of the American

Ceramic Society, 87 (6) 2004, 1024-103

84. Ananthakumar, S. Prabhakaran, K. Hareesh, U.S. Manohar, P. Warrier, K.G.K. ―Gel casting

process for Al2O3-SiC nanocomposites and its creep characteristics‖, Materials Chemistry and

Physics, 85 (1) 2004, 151-157

85. Wunderlich, W., Padmaja, P., Warrier, K.G.K., ―TEM charecterisation of sol-gel processed

alumina silica and alumina –titania nano hybrid oxide catalysts‖, Journal of the European

Ceramic Society, 24 (2) 2004, 313-317

86. Anappara, A.A. Rajeshkumar, S. Mukundan, P. Warrier, P.R.S. Ghosh, S. Warrier, K.G.K.,

―Impedence spectroscopic studies of sol gel derived sub critically dried silica aerogels‖, Acta

Materialia 52 (2) 2004, 369-375

87. Rajesh, K. Mukundan, P. Krishna Pillai, P. Nair, V. R. and Warrier, K. G. K. ―High-Surface-

Area Nanocrystalline Cerium Phosphate through Aqueous Sol-Gel Route‖, Chemistry of

Materials, 16(14) 2004, 2700 – 2705

88. Rajesh, K. Sivakumar, B. Krishna Pillai, Mukundan, P., P. Warrier, K. G. K. and Nair, V.R.,

―Synthesis of nanocrystalline lanthanum phosphate for low temperature densification to

monazite ceramics‖, Materials Letters, 58 (11) 2004, 1687-1691

89. Sivakumar, S. Sibu, C.Mukundan, P., P. Krishna Pillai, P. and Warrier, K.G.K., ―Nanoporous

titania–alumina mixed oxides—an alkoxide free sol–gel synthesis‖, Materials Letters, 58 (21)

2004, 2664-2669

90. Warrier, K.G.K. Sibu, C.P. and Baiju, K.V., ―Nanocrystalline Titanium Oxide – Its Potential

Functional Applications‖, Review Article, Transactions of the Indian Ceramic Society, 62 (2)

2003, 75-88

91. Rao, P.P. Ghosh, S.K. Koshy, P. Warrier, K.G.K., ―Structural and dielectric properties of

Ba3R3Ti5Nb5O30 (R = Pr or Ce) system‖, Journal of Materials Science Letters, 22 (3) 2003,

217-219

30

92. Anappara, A.A. Ghosh, S.K. Warrier, P.R.S. Warrier, K.G.K. and Wunderlich, W. ―Impedance

spectral studies of sol-gel alumina-silver nanocomposites‖, Acta Materialia, 51 (12) 2003,

3511-3519

93. George, S.D. Anapara, A.A. Warrier, K.G.K. Radhakrishnan, P. Vallabhan, C.P.G. Nampoori,

V.P.N., ―Laser-induced thermal characterization of nano Ag metal dispersed ceramic alumina

matrix‖, Proceedings of SPIE - The International Society for Optical Engineering 5118, 2003,

207-212

94. Sibu, C.P. Rajesh Kumar, S. Mukundan, P. and Warrier, K.G.K., ―Structural modifications and

associated properties of lanthanum oxide doped sol-gel nanosized titanium oxide‖, Chemistry of

Materials, 14 2002, 2876-2881.

95. Prabhakaran, K. Ramesh Babu Rajesh Kumar, S. and Warrier, K.G.K., ―Free form gel casting

of porous alumina tubes for membrane applications‖, Journal of American Ceramic Society,

85 (12) 2002, 3126-28

96. Sivakumar, S. Krishna Pillai, Mukundan, P., P. and Warrier, K.G.K., ―Sol-gel synthesis of

Nanosize anatase from Titanyl sulphate‖, Materials Letters, 57 2002, 330-335

97. Ananthakumar, S. Manohar, P. Warrier, K.G.K., ―Microstructural features and mechanical

properties of Al2O3-Al2TiO5 composite processed by gel assisted ceramic extrusion‖, British

Ceramic Transactions, 101 (1) 2002, 38-43

98. Warrier, K.G.K. Anil Kumar, G.M. Ananthakumar, S., ―Densification and mechanical

properties of mullite-SiC nanocomposites synthesized through sol-gel coated precursors‖,

Bulletin of Materials Science, 24 (2) 2001, 191-195

99. Padmaja, P. Anilkumar, G. M. Mukundan, P. Aruldhas, G. and Warrier, K.G.K.

―Characterisation of stoichiometric sol-gel mullite by fourier transform infrared spectroscopy‖,

International Journal of Inorganic Materials, 7 (3) 2001, 693-698

100. Anilkumar, G.M. and Warrier, K.G.K., ―Densification of mullite-SiC nanocomposite sol-gel

precursors by pressureless sintering‖, Materials Chemistry and Physics, 67 2001, 263-266

101. Warrier, K.G.K. Rajesh Kumar, S. Sibu, C.P. and Werner, G., ―High temperature stabilisation

of pores in sol-gel titania in presence of silica‖, Journal of Porous Materials, 8 (4) 2001, 311-

317

102. Prabhakaran, K. and Warrier, K.G.K. and Rohatgi, P.K., ―Preparation of free flowing fly ash

granules multifunctional molecules‖, Ceramics International, 27 (7) 2001, 749-754

103. Ananthakumar S. and Warrier K.G.K., ―Extrusion characteristics of alumina-aluminium titanate

composite using boehmite as reactive binder‖, Ceramics International, 21 (1) 2001, 71-78

31

104. Ananthakumar, S. Menon, A.R.R. Prabhakaran, K. Warrier, K.G.K., ―Rheology and packing

characteristics of alumina extrusion using boehmite gel as binder‖, Ceramic International, 27

2001, 231-237

105. Ghosh, S.K. Vasudevan, A.K. Rao, P.P. and Warrier, K.G.K., ―Influence of different additives

on Anatase-Rutile Transformation in Titania‖, British Ceramic Transactions, 100 2001, 151-

154

106. Hareesh, U.S. Vasudevan, A.K. and Warrier, K.G.K. Berry, F.J. Mortimer, M. and Vetel, F.F.,

―Dependence of Precursor Characteristics on Low Temperature Densification of Sol-gel

Aluminium Titanate‖, Journal of European Ceramic Society, 21 (13) 2001, 2345-2351

107. Warrier, K.G.K., ―Sol-gel nanotechnology – as applied to synthesis of ceramic

nanocomposites‖, Metals Materials and Processes, 13 (2-4) 2001

108. Rajesh Kumar, S. Pillai, S.C. Hareesh, U.S. Mukundan, P. and Warrier, K.G.K., ―Synthesis of

thermally stable, high surface area anatase-alumina mixed oxides‖, Materials Letters, 43 2000,

286-290.

109. Anathakumar, S. Vijaya Raja and Warrier, K.G.K., ―Effect of nanoparticulate boehmite sol as a

dispersant for slurry compaction of alumina ceramics‖, Materials Letters, 43 2000, 174-179

110. Ananthakumar, S. Pillai, S.G.K. and Warrier, K.G.K., ―Alumina Ceramics fabricated by

Colloidal processing‖, Transactions of the Indian Ceramic Society, 58 (1) 1999, 9-14

111. Suresh, C. Rajesh Kumar, S. Vasudevan, A.K. and Warrier, K.G.K., ―Sol-Gel Titania coating

precursors having different anatase-rutile transformation temperature‖, Transactions of the

Indian Ceramic Society, 58 (5) 1999,118-121

112. Ghosh, S.K. Suresh, C. Asha, K.V. Rao, P.P. and Warrier, K.G.K., ―Bulk-Electrical Properties

of Sol-Gel Titania as Function of Concentrations of Y2O3 and Fe2O3‖, Transactions of the

Indian Ceramic Society, 58 (5) 1999,112-114

113. Padmaja, P. Kumar, S.R. Mukundan, P. and Warrier, K.G.K., ―Development of porous alumina

from engineered boehmite xerogel containing different solvent media‖, Transactions of Indian

Ceramic Society, 58 (6) 1999, 123-125

114. Aloysius, R.P. Sobha, A. Guruswamy, P. Warrier, K.G.K. and Syamaprasad, U., ―Fabrication

of (Bi,Pb)-2223/Ag¯Cu alloy sheathed tapes: optimization of Cu composition in the sheath with

respect to the Cu stoichiometry in the system, Physica C: Superconductivity, 328 (3-4) 1999,

221-229

32

115. Kumar, S.R. Suresh, C. Vasudevan, A.K. Suja, N.R. Mukundan, P. and Warrier, K.G.K.,

―Effect of Addition of Silica to Sol-Gel Titania in Presence of Different Solvents‖, Materials

Letters 38 1999, 161-166

116. Kumar, S.R. Krishnapillai, P. and Warrier, K.G.K., ―Synthesis of high surface area silica by

solvent exchange in alkoxy derived silica gels‖, Polyhedron 17 (10) 1998, 1699

117. Padmaja, P. Sivakumar, S. Krishna pillai, P. and Warrier, K.G.K., ―Synthesis of Porous alumina

from boehmite sol‖, Transactions of the Indian Ceramic Society, 58 (5) 1998, 131-133

118. Suresh, C. Biju, V. Mukundan, P. and Warrier, K.G.K., ―Anatase to Rutile Transformation in

Sol-Gel Titania by Modification of Precursor‖, Polyhedron, 17 (18) 1998, 3131-3135

119. Sunilkumar, C. Hareesh, U.S. Pai, B.C. Damodaran, A.D. and Warrier, K.G.K., ―Aqueous

Extrusion of alumina-zirconia (12 mol% ceria) ―Composite using boehmite as an extrusion aid‖,

Ceramic International, 24 1998, 583-587

120. Kumar, S.R. Anilkumar, G.M. Ananthakumar, S. Damodaran, A.D. and Warrier, K.G.K.,

―Dependence of Drying Techniques on the Development of Porosity in Sol-Gel Silica Precursor

Gels‖, Journal of Porous Materials, 5 1998, 59-63

121. Ananthakumar, S. KrishnaPriya, G. Damodaran, A.D. and Warrier, K.G.K. ―Thermal

Decomposition Characteristics of Boehmite Gels Under Microwave Heating and Associated

Microstructural Features‖, Materials Letters, 35 1998, 95-99

122. Padmaja, P. Anilkumar, G.M. Krishna pillai, P. Damodaran, A.D. and Warrier, K.G.K.,

―Formation Characteristics and Densification Behaviour of Diphasic Mullite Gels under

Various pH conditions‖, British Ceramic Transactions, 18 1998, 1768

123. Anilkumar, G.M. Mukundan, P. Damodaran, A.D. and Warrier, K.G.K., ―Low Temperature

Mullitisation in Boehmite-TEOS gel precursor containing -alumina and Mullite Nucleating

seeds‖, Chemistry of Materials, 10 (8) 1998, 2217-2227

124. Ananthakumar, S. Hareesh, U.S. and Damodaran, A.D. and Warrier, K.G.K., ―Microwave

Processing of Boehmite Coated SiC Composite Precursors for Alumina-SiC nanocomposites‖,

Journal of Material Science Letters, 17 1998, 145-148

125. Padmaja, P. Anilkumar, G.M. Damodaran, A.D. and Warrier, K.G.K., ―Formation of Mullite

phase in Diphasic Gels consisting of TEOS and Boehmite-with and without Dehydroxylation‖,

Journal of European Ceramic Society, 18 1998, 1765-66

126. Krishnapriya, G. Padmaja, P. Aruldhas, G. Damodaran, A.D. and Warrier, K.G.K.,

―Dehydroxylation and High Temperature Phase formation in Sol-Gel Boehmite Characterised

by FTIR Technique‖, Journal of Material Science Letters, 16 1977, 1584-1587

33

127. Hareesh, U.S. Vasudevan, A.K. Damodaran, A.D. and Warrier, K.G.K., ―Low Temperature

Sintering of seeded Aluminium Titanate Precursor gels‖, Materials Letters, 32 (2-3) 1997, 203-

208

128. Warrier, K.G.K. Hareesh, U.S. Vasudevan, A.K. and Damodaran, A.D., ―Low Temperature

Densification and Microstructure Development in Aluminium Titanate Precursor Gels

containing mixture of Nucleating seeds‖, Ceramic Transactions 1997, The American Ceramic

Society.

129. Ananthakumar, S. Hareesh, U.S. Damodaran, A.D. and Warrier, K.G.K., ―Microwave Drying of

Sol-Gel Alumina- 30 vol % SiC precursor for Particulate Ceramic Matrix Composites‖, British

Ceramic Transactions, 97 (5) 1997, 236

130. Hareesh, U.S. Anilkumar, G.M. Damodaran, A.D. and Warrier, K.G.K., ―Preparation of Mullite

coated SiC particulates as precursors for mullite-SiC Nanocomposites‖, Ceramic Engineering

Science Proceedings, 1997, The American Ceramic Society.

131. Anilkumar, G.M. Mukundan, P. Damodaran, A.D. and Warrier, K.G.K., ―Effect of precursor

pH on the formation characteristics of sol-gel mullite‖, Materials Letters, 33 (3-4) 1997, 117-

122

132. Anilkumar, G.M., Damodaran, A.D. and Warrier, K.G.K., ―Synthesis and Characterisation of

Thermally Stable High Surface Area Anatase Titania Particulates‖, Ceramic Transactions 73,

1997

133. Sivakumar, S. Ghosh, S.K. Damodaran, A.D. Warrier, K.G.K., ―Dependence of Concentration

of Montmorillonite and Boehmite Sol on the Properties of Al-PILC‖, Polyhedron, 16 1997,

2785-88

134. Vasudevan, A.K. Rao, P.P. Ghosh, S.K. Anilkumar, G.M. Damodaran, A.D. and Warrier,

K.G.K., ―Effect of Addition of Silver on Anatase -Rutile Transformation as Studied by

Impedance Spectroscopy‖, Journal of Material Science Letters, 16 (1) 1997, 8 -11

135. Vasudevan, A.K. Mani, T.V. Damodaran, A.D. and Warrier, K.G.K., ―Influence of Solvent on

Aluminium Titanate Formation Characteristics‖, Journal of Material Science Letters, 16 1997,

496-499

136. Joe, H. Vasudevan, A.K. Aruldhas, G. Damodaran, A.D. and Warrier, K.G.K., ―FTIR as a Tool

to Study High Temperature Phase Transformations in Sol Gel Aluminium Titanate‖, Journal of

Solid State Chemistry, 130 1997.

34

137. Sivakumar, S. Ghosh, S.K., Damodaran, A.D. and Warrier, K.G.K., ―Influence of Medium on

the Properties of Boehmite Intercalated Montmorillonite‖, Materials Letters, 31(1-2) 1997, 113-

118

138. Hareesh, U.S., Damodaran, A.D. and Warrier, K.G.K., ―Sol-Gel Precursors for Alumina -SiC

Nanocomposites through Controlled Flocculation and Humidity Drying‖, British Ceramic

Transactions, 96 (3) 1997 99-101

139. Warrier, K.G.K., Hareesh, U.S. Anil Kumar, G. M Ananthakumar S. and Damodaran, A.D.,

―Sol-Gel Alumina and Mullite Coated SiC Precursors for Ceramic Matrix Composites‖,

Material Science Forum, 243-45, 437- 442, 1997.

140. Anilkumar, G.M., Hareesh, U.S., Damodaran, A.D. and Warrier, K.G.K., ―Effect of seeds on

the transformation of sol-gel mullite‖, Ceramic International, 23 6 1997 537-543

141. Sunilkumar, C. Hareesh, U.S., Damodaran, A.D. and Warrier, K.G.K. ―Monohydroxy

aluminium oxide (boehmite-AlOOH) as a reactive binder for extrusion of alumina ceramics‖,

Journal of European Ceramic Society, 17 1997 1167-1172

142. Hareesh, U.S., Ananthakumar, S. Damodaran, A.D. and Warrier, K.G.K., ―Dependence of pH

on Dispersion of SiC Fine Particulates in Boehmite and its Correlation with the Microstructural

Features of Alumina, Advances in Ceramic Matrix Composites‖, Ceramic Transactions, 74

1996,

143. Warrier, K.G.K. Hareesh, U.S. Anil Kumar, G.M. Damodaran, A.D. and Janssen R., ―Ultrafine

Alumina Coated SiC Particles for Alumina-SiC Nanocomposites, Hybrid Microelectronic

Materials‖, Ceramic Transactions, 68 1996 251-260

144. Kapuri, N. Rai, K.N. Upadhyaya, G.S. Warrier, K.G.K. Sathyanarayana, K.G. ―SEM studies of

mullite - ZrO2 particulate composites‖, Prakt. Metallogr., 32 1996 197-206

145. Varma, H.K. Ananthakumar, S. Damodaran, A.D. and Warrier, K.G.K., ―Synthesis of Zinc

oxide varistors through microwave derived precursors‖, Ceramic International, 22 (1) 1996 53-

56

146. Vasudevan, A K. Rao, P.P. Ghosh, S.K. Warrier, K.G.K. and Damodaran, A.D., ―Impedance

Spectroscopy of Aluminium Titanate Silver Ceramic Metal Composites‖, Powder Metallurgy, 7

(1) 1996

147. Sivakumar, S. Damodaran, A.D. and Warrier, K.G.K. and Berry, F.J. and Smart, L., ―Effect of

exchange ion on the properties of boehmite intercalated montmorillonite‖, Polyhedron, 14 (15-

16) 1995 2201-2204

35

148. Sivakumar, S. Damodaran, A.D. and Warrier, K.G.K., ―Delamination through sonication for

hydroxy metal oxide sol intercalation of montmorillonite‖, Ceramic International, 21 1995 85 -

88

149. Vasudevan, A.K. Mani, T.V. Damodaran, A.D. and Warrier, K.G.K., ―Dependence of

aluminium titanate formation on precursor characteristics‖, Journal of Materials Science Letters,

14 1995 1317-1320

150. Hareesh, U. S. Sunilkumar, C. Mani, T. V. Anilkumar, G.M. Damodaran, A.D. and Warrier,

K.G.K., ―Processing of BPSCCO - PMMA composite for sintering and texture development‖,

Journal of Ceramic Society Japan, 103 (7) 1995

151. Warrier, K.G.K Hareesh, U.S. Anilkumar, G.M. and Damodaran, A.D. Jansen, R. ―Ultrafine

Alumina coated SiC particles for Al2O3-SiC nanocomposites‖, American Ceramic Society,

Basic Science Fall Meeting, 5-8 November, 1995, New Orleans, USA.

152. Sivakumar, S. Mukundan, P. Krishnapillai, P. Damodaran, A.D. Nair, M. R. and Warrier,

K.G.K., ―Thermal stability of montmorillonite intercalated and aluminium pillared by boehmite

sol‖, Ceramic International, 20 1994 349 – 352

153. Balagopal, N. Sunil Kumar, C. Warrier, K.G.K. and Damodaran, A.D., ―Sinterability of Sol-

Sprayed Alumina-Zirconia Composites‖, Journal of Material Science Letters, 13 1994 784-86

154. Mani, T.V. Damodaran, A.D. and Warrier, K.G.K., ―Zone melting refining of Bi-PB-Sr-Ca-Cu-

O Superconductor prepared through Sol-Gel method‖, Journal of Material Science, 29 1994

6453-6457

155. Sivakumar, S. Mukundan, P. Krishnapillai, P. Damodaran, A.D. Nair, M.R. and Warrier,

K.G.K., ― Thermal stability of montmorillonite intercalated and aluminium pillared by

boehmite sol‖, Ceramic International, 20 1994 349-52

156. Varma, H.K. Mani, T.V. Damodaran, A.D. Warrier, K.G.K. and Balachandran, U.,

―Characteristics of Alumina Powders Prepared by Spray Drying of Boehmite Sol‖, Journal of

the American Ceramic Society, 77 (6) 1994 1597-1600

157. Ananthakumar, S. Varma, H.K. Perumal, P. Rao, P.P. Damodaran, A.D. Warrier, K.G.K.,

―Effect of Addition of Calcined Grains on the Microstructure and Non-Linearity Features of

ZnO varistors‖, Journal of Materials Science Letters, 13 1994 731-33

158. Varma, H.K. Mani, T.V. Damodaran, A.D. Warrier, K.G.K. and Balachandran, U., ―Sintering

of Thin Sheets of Alumina powders prepared by Sol-Spray Techniques‖, Journal of Materials

Science Letters, 13 1994 491-93

36

159. Warrier, K.G.K. Mukundan, P. Ghosh, S.K. Sivakumar, S. Damodaran, A.D., ―Microwave

Drying of Boehmite Sol Intercalated Smectites‖, Journal of Materials Science Letters, 21 1994

3415-3418

160. Sunilkumar, C. Balgopal, N. Warrier, K.G.K. and Damodaran, A.D., ―Processing and

Densification of Ceria-Zirconia Composite through Extrusion of Ceramic Polymer Composite‖,

Ceramic International, 20 1994 183-187

161. Sunilkumar, C. Balgopal, N. Pai, B.C. Warrier, K.G.K. and Damodaran, A.D., ―Injection

Moulding of Ceria-Zirconia using Aqueous HPMC-PVA Binder system‖, British Ceramic

Transactions, 93 (2) 1994 53-56

162. Varma, H.K. Krishna Pillai, P. Mani, T.V. Damodaran, A.D. Warrier, K.G.K. ―Spray Drying of

metal alkoxide sol for Strontium Titanate Ceramics‖, Journal of the American Ceramic Society,

77 (1) 1994 129-132

163. Mani, T.V. Krishna Pillai, P. Damodaran, A.D. and Warrier, K.G.K., ―Dependance of

calcination conditions of boehmite on the alumina particulate characteristics and sinterability‖,

Material Letters, 19 (5) 1994 237-41

164. Varma, H.K. Ananthakumar, S. Perumal, P. Rao, P.P. Warrier, K.G.K. and Damodaran,

A.D., ―Microwave Processing of ZnO Varistor‖, Ceramic Transactions, 36 1993 115-122

165. Sivakumar, S. Warrier, K.G.K. and Damodaran, A.D., ―Synthesis of Pillared Smectites from

Hydrous Metal Oxide Sol-Smectite Mixtures under Reflux Conditions‖, Polyhedron, 12 (21)

1993 2587-91

166. Balgopal, N. Warrier, K.G.K. and Damodaran, A.D., ―Colloidal Processing of Sol sprayed

Particulate Composite‖, Journal of European Ceramic Society, 12 1993 449-453

167. Mani, T. V. Warrier, K.G.K. and Damodaran, A.D., ―Pre-Sintering processing of Bi-based

Bulk Superconductor through Viscous Processing‖, British Ceramic Society Transactions, 92

(6) 1993 246-50

168. Mani, T.V. Varma, H.K. Warrier, K.G.K. and Damodaran, A.D., ―Sol Spray Technique for

Fine Grained Ceria Particles‖, Ceramic International, 19 1993 125 -128.

169. Perumal, P., Varma, H.K. Warrier, K.G.K. and Damodaran, A.D., ―Tape Cast Rare Earth-

Doped ZnO Varistor‖ British Ceramic Society Transactions and Journal, 92 (1) 1993 35 – 37

170. Balagopal, N., Varma, H.K. Warrier, K.G.K. and Damodaran, A.D., ―Citrate Precursor

Derived Alumina-Ceria Composite‖, Ceramic International, 18 1992 107-111

37

171. Balagopal, N., Mukundan, P., Warrier, K.G.K., and Damodaran, A.D., ―Torque Rheology and

Consolidation Characteristics of Alumina Powder‖, Transactions of British Ceramic Society, 91

1992 80-82

172. Varma, H.K., Warrier, K.G.K., Kumar, A. Mani, T. V., Pillai, S.G.K. and Damodaran, A.D.,

―Microstructural Development in Repeated Zone Refining of Microwave Derived YBCO

Compacts‖, Journal of Applied Physics Letters Japan, 31 (5A) 1992 L543-546

173. Mani, T.V., Varma, H.K., Warrier, K.G.K. and Damodaran, A.D., ―Bi(Pb)-Sr-Ca-Cu-O

Superconductors by Decompostion of Acrylate Polymer Precursor Gel‖, British Ceramic

Society Transactions and Journal, 91 1992 120-23

174. Warrier, K.G.K., Varma, H.K., T.V., Mani and Damodaran, A.D., ―Rapid Method for

Preparation of 123 Superconductors using Microwaves‖, Journal of the American Ceramic

Society, 75 (7) 1992 1990-1992

175. Mani, T.V., Varma, H.K., Warrier, K.G.K. and Damodaran, A.D., ―Gelation Characteristics of

Aluminium Titanate Precursor Sols in Different Solvent Media‖, Ceramic International, 18

1992 69-72

176. Ghosh, S.K. Mukundan, P. Warrier, K.G.K. and Damodaran, A.D., ―Preparation of Hydroxy

Aluminium Pillared Bentonite using Boehmite Sol‖, Journal of Materials Science Letters, 10

1991 1193-95

177. Mani, T.V., Varma, H.K., Warrier, K.G.K. and Damodaran, A.D., ―Alumnium Titanate Powder

Synthesis via Thermal Decomposition of Transparent Gel‖, Journal of the American Ceramic

Society, 94 (8) 1991 1807-1810

178. Varma, H.K. Krishna Pillai, P. Sreekumar, M.M. Warrier, K.G.K. and Damodaran, A.D.,

―Strontium Titanate prepared by Spray Drying of Dispersed Metal Alkoxide Gel‖, Transactions

of British Ceramic Society, 90 189-91

179. Ghosh, S.K. Mukundan, P. Warrier, K.G.K. and Damodaran, A.D., ―Preparation of Hydroxy

Aluminium Pillared Bentonite using Boehmite Sol‖, Journal of Materials Science Letters, 10,

1991 , 1193 – 95

180. Balagopal, N. Warrier, K.G.K. and Damodaran, A.D., ―Alumina-Ceria Composite Powders

through a Flash Combustion Technique‖, Journal of Materials Science Letters, 10 1991 1196-

98

181. Varma, H.K. Mukundan, P. Warrier, K.G.K. and Damodaran, A.D., ―Cerium Oxide Powder

with increased Surface Area for Catalyst Support‖, Journal of Materials Science Letters, 10

1991 666-667

38

182. Mani, T.V. Varma, H.K. Warrier, K.G.K. and Damodaran, A.D., ―Bi(Pb)- Sr-Ca-Cu-O

Precursor Powder through Synthesis involving Metal Nitrate - Urea Mixtures‖, Journal of

Materials Science Letters, 10 1991 1196-98

183. Ghosh, S.K. Warrier, K.G.K. and Damodaran, A.D., ―Thermally Treated Kaolin as An

Extender Pigment‖, Journal of Materials Science Letters, 9 1990 1046-48

184. Vipin, P.M. Sanjaynath, V.V. Varma, H.K., Warrier, K.G.K. and Damodaran, A.D., ―Non

Linearity Characteristics of K2O Doped Pr2O3 based ZnO Varistors‖, Journal of British

Ceramic Society, 89 1990 87-88

185. Vipin, P.M. Sanjaynath, V.V. Varma, H.K., Warrier, K.G.K. and Damodaran, A.D., ―Influence

of Particle Size and Addition of K2O on Non-Ohmic Behaviour of Pr2O3 varistors‖, Ceramic

International, 16 (6) 1990 319-23

186. Varma, H.K. Warrier, K.G.K. and Damodaran, A.D., ―Influence of Precipitation Medium on the

Properties of Fine Alumina Powders‖, Ceramic International, 16, 1990 73-76

187. Varma, H.K. Mukundan, P. Warrier, K.G.K. and Damodaran, A.D., ―Flash Combustion

Synthesis of Cerium Oxide‖, Journal of Materials Science Letters, 9 1990 377-79

188. Varma, H.K. Warrier, K.G.K. and Damodaran, A.D., ―Preparation of Metal 123 Superconductor

composite without Oxygen Annealing‖, Journal of Materials Science Letters, 9 1990 1000-

1001

189. Varma, H.K. Warrier, K.G.K. and Damodaran, A.D., ―Silver YBCO Composite Derived from

Citrate Gel‖, Superconducting Science and Technology, 3 1990 73-75

190. Varma, H.K. Warrier, K.G.K. Damodaran, A.D. and Balachandran, U. ―Non Aqueous Cold

Extrusion as a Route for YBCO Wires‖, Journal of the American Ceramic Society, 73 (10) 1990

3100 - 3102

191. Varma, H.K. Warrier, K.G.K. and Damodaran, A.D., ―Metal Nitrate-Urea Decomposition Route

for Y-Ba-Cu-O powder‖, Journal of the American Ceramic Society, 73 (10) 1990 3103 – 3105

192. Varma, H.K. Warrier, K.G.K. and Damodaran, A.D., ―Thermal Decomposition of Citrate

Precursor for 123 High Tc Superconductor‖, Journal of Materials Science, 8 1989 1313-1316

193. Jalajakumari, B. Warrier, K.G.K. and Sathyanarayana, K.G., ―Thermal Dehydroxylation of

Surface Modified Kaoilinite‖, Journal of Materials Science 24 1989 265- 67

194. Jalajakumari, B. Warrier, K.G.K. and Sathyanarayana, K.G., ―Preparation and Properties of

Kaolin -Polyethylene Composites‖, Transactions of the Indian Ceramic Society, 48 1989 5 – 7

39

195. Varma, H.K. Kumar, K.P. Warrier, K.G.K. and Damodaran, A.D., ―Effect of K2O on the

Sintered Microstructure of Pr2O3 Doped Zinc Oxide Varistors‖, Journal of Materials Science

Letters, 8 1989 974-76

196. Sanjaynath, V.V. Varma, H.K. Warrier, K.G.K. and Damodaran, A.D., ―Non-linearityin Rare

Earth Oxide Doped Zinc Oxide Varistors Prepared by Flash Combustion Method‖, Journal of

European Ceramic Society, 5 1989 233-36

197. Varma, H.K. Kumar, K.P. Warrier, K.G.K. and Damodaran, A.D., ―Silver-YBCO composite

through citrate gel decomposition‖, First International Symposium on Superconductors,

American Ceramic Society, Anaheim, USA, 1989

198. Varma, H.K. Warrier, K.G.K. and Damodaran, A.D., ―Flash decomposition synthesis of 123

Superconducting powder‖, First International SAMPE Symposium, Tokyo, Japan, November,

1989

199. Ghosh, S.K. Warrier, K.G.K. and Damodaran, A.D., ―Investigation on the possibility of

separation and use of fine Kaolin as pigments‖, Proc. of the National Seminar on the

Benification of Non metallic minerals, Trivandrum, India, Dec. 1988, Organized by the Indian

Ceramic Society, p.128.

200. Varma, H.K. Kumar, K.P. Warrier, K.G.K. and Damodaran, A.D., ―Grain Growth Control in

Rare Earth Doped Zinc Oxide‖, Proc. of the Seminar on Materials for Advanced Technologies,

Trivandrum, Jan. 1989, organized by Indian Institute of Metals.

201. Varma, H.K. Kumar, K.P. Warrier, K.G.K. and Damodaran, A.D., ―Non Ohmic behaviour and

microstructure control of rare doped zinc oxide containing K2O‖, Proc. of the International

Conference on Sintering of multiphase metal and ceramic systems, New Delhi, organized by

International Institute of the Science of Sintering, Jan. 1989.

202. Jalajakumari, B. Warrier, K.G.K. and Satyanarayana, K.G., ―Preparation and properties of

Kaolin-polyethylene particulate composites‖, Transactions of the Indian Ceramic Society, 48

(1) 1989

203. Varma, H.K. Kumar, K.P. Warrier, K.G.K. and Damodaran, A.D., ―Thermal Behaviour of

citrate precursor 123 High Tc superconductor‖, Proc. of the seminar on Advanced Ceramic

Materials, August 1988, Calcutta, p.39.

204. Varma, H.K. Warrier, K.G.K. K. R. Nair and Damodaran, A.D., ―Preparation of YBa2Cu3O7

Superconducting ceramic from Coprecipitated powders‖, Regional Research Laboratory (CSIR),

Proc. of the seminar Workshop on Advances in Ceramics, BHU, Feb. 1988, p.16.

40

205. Varma, H.K. Warrier, K.G.K. C. G. R. Nair and Damodaran, A.D., ―Effect of medium of

precipitation on the point of zero charge of fine alumina powders‖, Proc. of the seminar cum

Workshop on Advances in Ceramics, Banares Hindu University, Feb. 1988, p.5.

206. Jalajakumari, B. Warrier, K.G.K. Pavithran, C.and Satyanarayana, K.G., ―Mechanical and

Electrical Properties of surface modified Kaolinite-poly-ester particulate composites‖, Journal

of Plastics and Composites (USA), 7 (5) 1988 402.

207. Krishna Pillai, Mukundan, P., P. and Warrier, K.G.K., ―Development of porcelain using clay

washery sand‖, Interceram, 5 (1988) 59

208. Mukundan, P. and Warrier, K.G.K., ―Thermal decomposition characteristics of coconut pith in

tile clay bodies‖, Interbrick, 4 (6) 1988 8.

209. Jalajakumari, B. Warrier, K.G.K. and Satyanarayana, K. G., ―Formation characteristics and

microstructure of mullite from surface modified Kaolinite‖, Proc. of the seminar on Refractory

Industry in India, Sept. 1987, p.53.

210. Varma, H.K. Warrier, K.G.K. and Nair, C.G.R., ―Effect of Precipitation medium on the particle

characteristics of sol-gel prepared mullite composition‖, Proc. of the Seminar on Refractory

Industry in India, Sept. 1987, ICS (Kerala Chapter) p.87.

211. Warrier, K.G.K. Krishna Pillai, P. Perumal, P., ―Development of vitrified red clay tiles‖, Proc.

of the seminar on Thrust Area Projects on Building Materials, CBRI, Roorkee, New Delhi,

March 13-14, 1987.

212. Warrier, K.G.K., ―The influence of Processing parameters on the development of micro

structure of clay based ceramic products‖, Proc. of the seminar on Mining, Benefication and

utilisation of clays, Trivandrum, Dec. 1986, p.43.

213. Warrier, K.G.K., ―Transmission Electron Microscopic studies of zirconia toughened alumina

and mullite‖, Proc. of the seminar on High Performance Materials, Hyderabad, Dec. 1986.

214. Jalajakumari, B. Krishna Pillai, P. Warrier, K.G.K. and Satyanarayana, K.G., ―Suitability of

kaolinite clay prepared by controlled heat treatment for use in particulate composites‖,

Transactions of the Indian Ceramic Society, 45 (5) 1986

215. Jalajakumari, B. Krishnapillai, P., Warrier, K.G.K. and Satyanarayana, K.G. ―Surface

modification of kaolinite clay prepared by controlled thermal treatment‖, Journal of Materials

Science Letters, 5 1986 865

216. Warrier, K.G.K. and Sarkar, B.K., ―Kerala beach sand as a resource for Emerging Engineering

Materials‖, Proc. of the seminar on the Mineral Resources of Kerala and their Utilisation,

Trivandrum, 8th

March, 1986

41

217. Warrier, K.G.K., ―Development of porcelain using clay washery sand‖, Proc. of the Workshop

on Building Materials, Their availability, Production and Use, Trivandrum, 24th

Jan. 1986.

218. Warrier, K.G.K. and Rohatgi, P.K., ―Mechanical, Electrical and Electrical Contact Properties of

Copper Titania Composites‖, Journal of Powder Metallurgy, 29 (1) 1986 65

219. Krishnapillai, P. Perumal, P. Warrier, K.G.K. Mukundan, P. Krishnapillai, P. Perumal, P. and

Reddy, S.R., ―Low temperature bricks from laterite through chemical bonding technique‖, Proc.

of the seminar on clay Based Materials for structural applications, Trivandrum, 22nd

Nov. 1985

220. Warrier, K.G.K., ―Use of washery sand in porcelain body composition‖, Proc. of the Seminar

on Aspects of Beneficiation and Utilisation of china clays organised by the Indian Ceramic

Society, Kerala Chapter, 11th

September 1985

221. Warrier, K.G.K., Mukundan, P. and Reddy, S.R., ―Decomposition characteristics of coconut

pith incorporated in clay bodies‖, Proc. of the 49th

Annual Sessions of the Indian Ceramic

Society, Hyderabad, March 1985

222. Satyanarayana, K.G. and Warrier, K.G.K., ―An approach to R & D through a Regional

Materials Policy‖, Proc. Of the Seminar on R & D challenges organised by the Society for R &

D Managers of India, VSSC, Feb. 1985

223. Warrier, K.G.K., ―Brick and Tile Industries - Problems and Prospects‖, Vyavasaya Keralam,

Feb. 1985, p.7

224. Warrier, K.G.K. Thankappan, B. Krishnapillai, P. and Reddy, S.R., ―Stabilized laterite soil for

the development of building materials‖, Interbrick (FRG), 2 1985

225. Krishnapillai, P. Perumal, P. Warrier, K.G.K. and Reddy, S.R., ―Thermal studies on the laterite-

phosphoric acid systems‖, Transactions of the Indian Ceramic Society, 43 (5) 1984 122.

226. Mukundan, P., Warrier, K.G.K. and Reddy, S.R., ―Conservation of materials and energy

through lightweight bricks‖, Interceram

227. Mukundan, P. Mohan, S. Warrier, K.G.K. and Reddy, S.R., ―Coconut pith-clay light weight

bricks - Energy saving aspects‖, Proceedings of the International Workshop on Energy

Conservation in Buildings, Central Building Research Institute, Roorkee, India, April, 1984.

228. Mukundan, P. Warrier, K.G.K. and Reddy, S.R., ―Use of coconut pith in the manufacture of

light weight building bricks‖, Proceedings of the Seminar organised by Association of Food

Scientists and Technologists, India, Feb. 1984.

229. Satyanarayana, K.G. Mohan Das, P.N. Pillai, C.K.S. Pavithran, C. Gopakumar, K. and Rohatgi,

P.K., ―Characterisation and utilization of coconut tree based materials‖, Indian Coconut Journal,

XIV (9) 1984 1

42

230. Warrier, K.G. Menon, P.K.S. and Reddy, S.R., ―Developmental studies on bricks and tiles

based on lateritic soils of Kerala‖, Proceedings of the Industrial Workshop on Modernisation

and problems of tile industries in Kerala, organised by Small Industries Service Institute, Govt.

of India, Quilon, India, Feb 1984

231. Gopakumar, K. Mukundan, P. and Satyanarayana, K.G., ―Preparation, structure and properties

of plaster of paris from phosphogypsum waste‖, Transations of the British Ceramic Society, 82

(6) 1983 193

232. Warrier, K.G.K. Murali, T.P. and Rohatgi, P.K., ―Preparation and properties of copper titania

particulate composites‖, Proceedings of the International School on Sintering, organised by

ISSS Delhi, Dec. 1983

233. Warrier, K.G. and Mohan, S., ―Brick and tile industries in Kerala, present status and future

opportunities‖, Souvenir, Indian Ceramic Society (Kerala Chapter), 1983 1

234. Gopakumar, K., ―Electroless coating of copper on zirconia powder and preparation of copper-

zirconia - particulate composites‖, Transactions of Powder Metallurgy Association of India.

235. Gopakumar, K. Mohan, S. and Rohatgi, P.K., ―Need for Regional Materials Policy: Kerala

State‖, J. Scientific and Industrial Research, 42 1983 671-681

236. Mukundan, P. Warrier, K.G.K. and Reddy, S.R., ―Preparation and properties of light weight

bricks for construction purposes‖, Proceedings of the seminar on low cost housing, organised by

Kerala State Housing Board, Trivandrum, India, 1983, 27.

237. Mohan Das, P.N. Kelukutty, V.S. Gopakumar, K. and Rohatgi, P.K., ―Reduction of iron ore and

mill scale using coconut pith and coconut shell as reductants‖, Transactions of the Indian

Institute of Metals, 36 (1) 1983

238. Gopakumar, K. Murali, T.P. and Rohatgi, P.K., ―Metal-shell char particulate composites using

copper coated particles‖, Journal of Materials Science, 17 1982 1041.

239. Warrier, K.G. and Reddy, S.R., ―Laterite as a ceramic material‖, Proceedings of National

Seminar on Building Materials, Organized by Central Building Research Institute, Roorkee,

India, April 1982

240. Dan, T.K. Gokularatnam, C.V. Gopakumar, K. and Rohatgi, P.K., ―Research, Development and

Production of glass in India towards 2000 AD‖, Journal Scientific and Industrial Research, 41

1982 216-231

241. Gopakumar, K. Murali, T.P. and Rohatgi, P.K., ―Copper titania particulate composites using

copper coated titania powders‖, PMAI News Letter, 8 (4) 1982, 23.

43

242. Pillai, C.K.S. Rohatgi, P.K. and Gopakumar, K., ―Coconut as a resource for Materials and

energy in future‖, Journal of Scientific and Industrial Research, 40 1981 154-155.

243. Pavithran, C. Gopakumar, K. Prasad, S.V. and Rohatgi, P.K., ―Copper coating on coir fibres‖,

Journal of Materials Science, 16 1981 1548-1556

244. Gopakumar, K. Pavithran, C. and Rohatgi, P.K., ―Recovery of tartrate from electroless copper

coating baths, Plating and Metal Finishing‖, July 1981, p. 70.

245. Gopakumar, K. Pavithran, C. and Rohatgi, P.K., ―Preparation of copper coated titania particles

for composites‖, Journal of Materials Science, 15 1980 1588

246. Gopakumar, K. Murali, T.P. and Rohatgi, P.K., ―Copper titania composites as a electrical

contact material‖, Proceedings of the Workshop on Electrical Contacts and Contact Materials

organised by Electrical Research and Development Association, India, Sept. 1980.

247. Patel, M. Gopakumar K. and Rohatgi, P.K., ―Future of clay and clay based industries - a

review‖, Transactions of the Indian Ceramic Society, 39 (3) 1980 85

248. Mohan Das, P.N. Gopakumar, K. Satyanarayana, K.G. Pavithran, C. Pillai, C.K.S. and Rohatgi,

P.K., ―Coconut tree based agricultural wastes of Kerala and their utilisation‖, Proceedings of the

National Seminar on Recycling of residues of agriculture and Industry, March 1980, Punjab

Agricultural University, Ludhiana.

249. Gopakumar, K. Pavithran, C. and Rohatgi, P.K., ―Metal coating on ceramic particles for

composites‖, Proceedings of the Symposium on Sintering and Sintered Products, Held at

BARC, Bombay, October 1979.

250. Patel, M. Gopakumar, K. and Rohatgi, P.K., ―Clay mineral as a resource for materials in future‖,

Proceedings of the International Symposium on Resource Engineering and Technology, Jan.

1979 at IIT Bombay, Vol. II (6) 1-10

251. Joseph, P. T. Pavithran, C. Warrier, K.G.K. and Prabhakaran, C. P., ―Fe(II) complexes of 1-

benyl-2-phenyl benzimidazole and 2-coumerinyl benzimidazol‖, Transition Metal Chemistry ,

3 (5) 1978 286

252. Warrier, K.G.K., ―Studies on the stability constants of complexes of UO2 (II), Hg(II), Pb(II),

Mn(II) and Mg (II) with substituted azobenzenes‖, Metals & Minerals Review, XVII (2) 1978

75

253. Warrier, K.G.K Pavithran, C. Mukundan, P. Krishnapillai, P., ―Studies on complexes of Cu(II),

Ni(II), and Fe(III) derived from novel schiff bases of 4- amino salicylic acid and substituted

benzaldehydes‖, Journal of Institution of Chemists (India), 50 1978 221

44

254. Warrrier, K.G.K. Pavithran, C. and Joseph, P.T., ―Physico chemical investigation on the

complexes of Cu(II), Ni(II), Co(II), Zn(II) and Cd(II) with 4-hydroxy -3-oximinomethyl 2`-

methyl azobenzene‖, Indian Journal of Chemistry, 16A 1978 228.

255. Warrier, K.G.K. Pavithran, C. Mohan Das, P.N. and Joseph, P.T., ―Studies on Cu(II), Ni(II),

Co(II), Zn(II) and Cd(II) complexes of 4-hydroxy-3-oximinomethyl 4`-methyl azobenzene‖,

Indian Journal of Chemistry, 16A 1978 628

256. Warrier, K.G.K., Mohan Das, P. N. and Joseph, P. T., ―Stepwise formation constants of the

chelates of substituted azobenzenes with Cu(II), Ni(II), Zn(II) and Cd(II)‖, Indian Journal of

Chemistry, 15A 1977 154

257. Gopa Kumar, K. Pavithran, C. and Mohan Das, P.N., ―Potentiometric studies on the some

trivalent metal chelates of 4-hydroxy-3-formyl azobenzene‖, Metals & Minerals Review, XVI

(5) 1977 114

258. Warrier, K.G.K. Mohan Das, P.N. and Joseph, P.T., ―Nd(III), Pr(III), Ce(III) and La (III)

complexes of 3-formyl 4-hydroxy and 3-oximinomethyl 4`-nitro azobenzenes‖, Indian Journal

of Chemistry, 14A 1976 815

259. Warrier, K.G.K. Mohan Das, P.N. and Joseph, P.T., ―Stepwise formation constants of La (III),

Ce(III), Pr(III) and Nd(III) with 4-hydroxy-3-formyl (2/4) methyl azobenzenes‖, Indian Journal

of Chemistry, 14A 1976 540

260. Kumar, K. Devadasan, G. and Joseph, P.T., ―Disodium disulphato zirconate trihydrate‖, Indian

Journal of Technology 12 1974 419

Annexure III

Patents

1. An improved process for the preparation of sol-gel boehmite (No.74/D/Del/95 dated, 20 Jan

1995).

2. A seeding composition useful for the preparation of abrasive alumina from boehmite (No.

75/Del/95 dated, 20 Jan. 1995)

3. An improved process for the preparation of modified non fused sol-gel alumina abrasive

grains (No. 76/Del/95 dated, 20 Jan. 1995).

4. A process for Chrome Management in Tannery Sludge by incorporation in building ceramics

(No. 892/Del/95 dated, May, 1995).

5. A process for flux bonded fly ash (no. 893/Del/95 dated, May, 1995).

45

6. A sol-gel process for the synthesis of photocatalytic doped titanium oxide for preventing

algae growth, destruction of bacteria and for forming transparent self-cleaning coatings.

(filed)

7. A process for fabrication of porous tubular ceramic substrates for membrane, catalyst support

and thermal diffusion applications (filed).

Annexure IV

Books

Edited Proceedings of two international Workshops organized by UNIDO. Contributed a chapter in

a massive futuristic document brought out by SIDBI.

1. Proceedings of the International workshop on building ceramics from industrial wastes,

organized by International Centre for Science and High Technology (UNIDO), Trieste, Italy,

1999

2. Materials design and production processes, organized by International Centre for Science and

High Technology (UNIDO), Trieste, Italy, 2001

3. Chapter on Terracotta tiles in ―Technology for small scale industries Current status and

emerging needs, Published by Small Industries, Tata McGraw-Hill Publishing Company, New

Delhi, 2001.