期刊
SENSORS AND ACTUATORS B-CHEMICAL
卷 171, 期 -, 页码 43-61出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.snb.2012.05.052
关键词
Flame-spray-made; Flammable gas sensing; Metals; Semiconducting metal oxides; CH4; C2H2; C2H4; CO; H-2
资金
- Office of the Higher Education Commission, under the program Strategic Scholarships for Frontier Research Network, Thailand
- Ministry of Science and Technology
- National Research University Project under Thailand's Office of the Higher Education Commission
- Graduate School and Department of Chemistry, Faculty of Science, Chiang Mai University, Thailand
- National Electronics and Computer Technology Center, Pathumthani, Thailand
Flame spray pyrolysis (FSP) presents a new technique for metal (Pt, Sn, Ru, Nb and W)-loaded metal oxide (MOX) nanoparticle synthesis, which requires only a single step. FSP prepared MOX nanoparticles have recently widely employed for gas-sensing applications. In this work, the performance towards flammable gases of unloaded and metal (Pt, Sn, Ru, Nb and W)-catalyzed metal oxide (ZnO, WO3, SnO2 and TiO2) nanoparticle thick films fabricated by FSP and spin-coating is reviewed, discussed and compared to MOXs prepared by other methods. The gas-sensing characteristics towards H-2, CH4, C2H2, C2H4, C2H5OH and CO gases of FSP-prepared MOXs are found to be significantly improved in terms of response, response time and selectivity with small Pt, Sn, Ru, Nb and W loading contents ranging from 0.2 to 5 mol% or at.%. In addition, Pt loading on WO3 and ZnO sensors results in excellent detection performances towards several flammable gases including H-2, CH4 and C2H2. (C) 2012 Elsevier B.V. All rights reserved.
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