Controlling the Composition of Nanosize Hexagonal WO<sub>3</sub> for Gas Sensing-Reference-Cited by-同舟云学术

Controlling the Composition of Nanosize Hexagonal WO₃ for Gas Sensing

Published:2008-06 Issue: Volume:589 Page:161-166
ISSN:1662-9752
Container-title:Materials Science Forum
language:
Short-container-title:MSF

Author:

Szilágyi Imre Miklós¹,Saukko Sami²,Mizsei János³,Király Péter⁴,Tárkányi Gábor⁴,Tóth Attila Lajos⁴,Szabó András¹,Varga-Josepovits Katalin¹,Madarász János¹,Pokol György¹

Affiliation:

1. Budapest University of Technology and Economics

2. University of Oulu

3. Technical University of Budapest

4. Hungarian Academy of Sciences

Abstract

Hexagonal (h-) WO3 was prepared through heating hexagonal ammonium tungsten bronze (HATB), (NH4)0.07(NH3)0.04(H2O)0.09WO2.95. By adjusting the heating temperature and atmosphere of HATB, we could control the oxidation state of tungsten atoms and the residual NH3/NH4 + content in h-WO3. The as-produced h-WO3 nanoparticles with different composition were tested as gas sensors and the effect of composition on gas sensing properties was studied. Our results showed that oxidized h-WO3 had the best sensitivity to H2S.

Publisher

Trans Tech Publications, Ltd.

Subject

Mechanical Engineering,Mechanics of Materials,Condensed Matter Physics,General Materials Science

Link

https://www.scientific.net/MSF.589.161.pdf

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