ISSN:
1662-9752
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
Hexagonal (h-) WO3 was prepared through heating hexagonal ammonium tungstenbronze (HATB), (NH4)0.07(NH3)0.04(H2O)0.09WO2.95. By adjusting the heating temperature andatmosphere of HATB, we could control the oxidation state of tungsten atoms and the residualNH3/NH4+ content in h-WO3. The as-produced h-WO3 nanoparticles with different compositionwere tested as gas sensors and the effect of composition on gas sensing properties was studied. Ourresults showed that oxidized h-WO3 had the best sensitivity to H2S
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/02/19/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.589.161.pdf
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