首页|H2S sensing material Pt-WO3 nanorods with excellent comprehensive performance
H2S sensing material Pt-WO3 nanorods with excellent comprehensive performance
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NSTL
Elsevier
The Pt-loaded WO3 materials have been synthesized via simple hydrothermal and chemical reduction methods. The microstructure of prepared Pt-WO3 exhibits as nanorods consisting of bundles of finer nanorods and the Pt nanoparticles with a size of ca. 5 nm loaded on the surface of WO3. The gas sensing measurements of Pt-WO3 material show excellent gas sensing selectivity to H2S compared with many other pollution gases (e.g. NO2, SO2, NH3, CO and CO2). In particular, 0.2 at% Pt-WO3 exhibits extremely high response (1638–10 ppm H2S), short response/recovery time (42 s/37 s) and low detection limit (1.27–5 ppb H2S) at 200 °C. The superior performance of 0.2 at% Pt-WO3 compared with pure WO3 mainly originate from its modulating action to conductive band electrons of WO3 and its catalysis to the chemisorption reaction on the surface.
Yao X.、Liu J.、Wang F.、Wu L.、Wang R.、Zhao J.、Meng F.、Zhang D.、Ahmed J.、Ojha K.
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Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials Ministry of Education and School of Materials Science and Engineering Shandong University
School of Materials Science and Engineering Qilu University of Technology (Shandong Academy of Sciences)
55 Institute of China North Industries Group
Department of Chemistry College of Science King Saud University
NSTL
Elsevier
