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Solution precursor plasma-sprayed tungsten oxide coatings for nitrogen dioxide detection

Solution precursor plasma-sprayed (SPPS) tungsten oxide (WO3) coatings used as nitrogen dioxide (NO2) gas sensitive layers were investigated. X-ray diffraction (XRD) analysis, combined with field-emission scanning electron microscopy (FE-SEM) confirm the deposition of nanostructured porous and conti...

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Bibliographic Details
Published in:Ceramics international 2014-08, Vol.40 (7), p.11427-11431
Main Authors: Zhang, Chao, Geng, Xin, Olivier, Marjorie, Liao, Hanlin, Debliquy, Marc
Format: Article
Language:English
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Summary:Solution precursor plasma-sprayed (SPPS) tungsten oxide (WO3) coatings used as nitrogen dioxide (NO2) gas sensitive layers were investigated. X-ray diffraction (XRD) analysis, combined with field-emission scanning electron microscopy (FE-SEM) confirm the deposition of nanostructured porous and continuous WO3 coatings directly from WCl6 ethanol solution. The as-sprayed coatings, without any post heat-treatment, show well-crystallized monoclinic phase structure. The sensors using SPPS WO3 coatings as sensitive layers exhibit good response to NO2 in sub-ppm range.
ISSN:0272-8842
1873-3956
DOI:10.1016/j.ceramint.2014.03.109