Flame-spray-made metal-loaded semiconducting metal oxides thick films for flammable gas sensing
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 f...
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| Main Authors: | , , , , , , , |
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| Format: | Review |
| Language: | English |
| Published: |
2014
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| Online Access: | http://www.scopus.com/inward/record.url?eid=2-s2.0-84864288829&partnerID=40&md5=f5e0172e762dc14037e5f19f5b50ac0f http://cmuir.cmu.ac.th/handle/6653943832/6742 |
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| Institution: | Chiang Mai University |
| Language: | English |
| Summary: | 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, WO 3, SnO 2 and TiO 2) 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, CH 4, C 2H 2, C 2H 4, C 2H 5OH 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 WO 3 and ZnO sensors results in excellent detection performances towards several flammable gases including H 2, CH 4 and C 2H 2. © 2012 Elsevier B.V. All rights reserved. |
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