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VALLEJOS VARGAS, S. GRÁCIA, I. FIGUERAS, E. PRÁŠEK, J. SEDLÁČEK, J. PYTLÍČEK, Z. CANÉ, C.
Original Title
Ferric oxide nanoparticle-functionalized tungsten oxide nanoneedles and their gas sensing properties
Type
conference paper
Language
English
Original Abstract
The aerosol assisted chemical vapor deposition of Fe2O3 nanoparticle-tunctionalized tungsten oxide nanoneedles and their gas sensing properties are presented here. Material analysis demonstrates the incorporation of 4 to 15 nm Fe2O3 nanoparticles at the surface of the tungsten oxide nanoneedles. Gas sensing tests show improved tungsten oxide sensitivity, to toluene, ethanol and hydrogen, with the highest sensitivity (six-fold) to toluene, due to its fonctionalization with Fe2O3. This enhancement is nearly similar to the enhancement obtained when fonctionalizing tungsten oxide with platinum, suggesting that the sensing performance of tungsten oxide could be improved to a same extent using second-phase nanoparticles of metal oxides, which are less expensive and more abundant than precious metals such as Pt.
Keywords
Functionalization, ferric oxide, platinum, AACVD; Gas sensor; Tungsten oxide
Authors
VALLEJOS VARGAS, S.; GRÁCIA, I.; FIGUERAS, E.; PRÁŠEK, J.; SEDLÁČEK, J.; PYTLÍČEK, Z.; CANÉ, C.
RIV year
2015
Released
11. 9. 2015
Publisher
Elsevier
ISBN
1877-7058
Periodical
Procedia Engineering
Year of study
120
Number
1
State
Kingdom of the Netherlands
Pages from
443
Pages to
446
Pages count
4
URL
http://www.sciencedirect.com/science/article/pii/S1877705815023279
Full text in the Digital Library
http://hdl.handle.net/11012/201064
BibTex
@inproceedings{BUT117969, author="Stella {Vallejos Vargas} and Isabel {Grácia} and Eduard {Figueras} and Jan {Prášek} and Jiří {Sedláček} and Zdeněk {Pytlíček} and Carles {Cané}", title="Ferric oxide nanoparticle-functionalized tungsten oxide nanoneedles and their gas sensing properties", booktitle="Eurosensors 2015 conference proceedings", year="2015", journal="Procedia Engineering", volume="120", number="1", pages="443--446", publisher="Elsevier", doi="10.1016/j.proeng.2015.08.664", issn="1877-7058", url="http://www.sciencedirect.com/science/article/pii/S1877705815023279" }