ZnO Nanoparticles-Chitosan Composite as Antibacterial Finishfor Textiles
Behaviour of ZnO nanoparticles during high temperature ...
Transcript of Behaviour of ZnO nanoparticles during high temperature ...
Behaviour of ZnO nanoparticles during high temperature treatment: on-line, size-resolved elemental analysis
Contact: Debora Foppiano - [email protected] ETH Conference on Combustion Generated Nanoparticles
th thJune 13 - June 16 , 2016, ETH Zürich, Switzerland
Ÿ RDD: adjustable and high dilution ratio and well-defined flows of the aerosol
Ÿ SMPS: online analysis of size distribution and concentration of particles
Ÿ ICP-MS: online elemental analysis (chemical composition)
Ÿ Thermal treatment of ZnO nanopowder in a tubular furnace
General Energy Research Department
Paul Scherrer Institut5232 Villigen PSI, Switzerland
Bioenergy and Catalysis Laboratory - Chemical Processes and Materials
a,b a a a a,bD. Foppiano , M. Tarik , A. Hess , E. Müller , C. Ludwiga Paul Scherrer Institut (PSI), Switzerland
b École Polytechnique Fédérale de Lausanne (EPFL), Switzerland
Measuring Arrangement : RDD-SMPS-ICP-MS
Experimental Data
DMA
CPC
RDDcpl
Qpoly
QC
PC
ICP-MS
Qmono,tot Qmono,CPC
Qm
on
o,IC
P
Air
to Vent
to Vent
Ar
Qraw,out
Qd
il A
r
Qair,CPC
QE
xcess
QS
he
ath
Excess air,CPC
Sheath
dil Ar
mass flow controller
aerosol neutralizer
particle filter
pump
XYZ
Qraw,inAr + H2
FURNACE
Conclusion
MotivationŸ Fate of metal nanoparticles in incinerator plants: heavy metals may volatilize and re-form as incidental
nanoparticles after filtration of the flue gas
Ÿ ZnO nanoparticles used in paints and waterproofing agents (used as wood preservatives)Ÿ
Ÿ Detection of Zn containing nanoparticles during high temperature treatment in reducing atmospheres
Ÿ Preliminary results for wood combustion: reducing conditions can influence the release of nanoparticles containing redox-sensitive elements, such as Zn
200 nm
ZnO
KeV
Zn
KeV
SMPS-ICP-MS SEM and XRD analysis on ZnO powder
SEM and EDX analysis (after thermal treatment)
Hexagonal crystalline structure
200 nm
Nearly spherical morphology
Analysis on remaining powder, after thermal treatment
Flower-liketype morphology
Lamellartype morphology
ZnO nanoparticles detection with SMPS-ICP-MS in the range of 50 - 290 nm
Acknowledgements Financial support was obtained from the Competence Center for Materials Science and Technology (CCMX, Project NanoAir) , the Swiss National Science Foundation (Projects 139136 and 136890), the Swiss Nanoscience Institute (Argovia, Project NanoFil), and the Swiss Competence Center for Energy Research – Biomass for Swiss Energy Future (SCCER BIOSWEET) in cooperation with the Commission for Technology and Innovation CTI.