Doctor-bladed thick films of flame-made Pd/ZnO nanoparticles for ethanol sensing
ZnO nanoparticles doped with 0-5 mol% Pd were produced by flame spray pyrolysis (FSP) in a single step using zinc naphthenate and palladium (II) acetylacetonate as precursors dissolved in toluene/acetonitrile (80/20 vol%). The particle properties were further analyzed by XRD, BET, and HR-TEM analyse...
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| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
2014
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| Online Access: | http://www.scopus.com/inward/record.url?eid=2-s2.0-38649089456&partnerID=40&md5=9478a5a03f14b32e05f359476265d53c http://cmuir.cmu.ac.th/handle/6653943832/5574 |
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| Institution: | Chiang Mai University |
| Language: | English |
| Summary: | ZnO nanoparticles doped with 0-5 mol% Pd were produced by flame spray pyrolysis (FSP) in a single step using zinc naphthenate and palladium (II) acetylacetonate as precursors dissolved in toluene/acetonitrile (80/20 vol%). The particle properties were further analyzed by XRD, BET, and HR-TEM analyses. The sensing films were produced by mixing the particles into an organic paste composed of terpineol and ethyl cellulose as a vehicle binder. The paste was doctor-bladed onto Al2O3 substrates interdigitated with Au electrodes. The gas sensing of ethanol (25-250 ppm) was studied at 400 °C in dry air. In addition, 1 mol% Pd/ZnO film showed the highest sensitivity and fastest response times (within seconds). The sensitivity increased and the response time decreased with increasing ethanol concentration. © 2007 Elsevier B.V. All rights reserved. |
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