TiO2/WO3 photocatalytic composite coatings prepared by spray pyrolysis
Authorized Users Only
2014
Authors
Grbić, Boško
Radić, Nenad

Stojadinović, Stevan

Vasilic, Rastko

Dohcevic-Mitrovic, Zorana
Šaponjić, Zoran

Stefanov, Plamen

Article (Published version)

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Show full item recordAbstract
TiO2/WO3 composites supported on a stainless steel foil were prepared by the spray pyrolysis technique. Content of WO3 was gradually increased from 1 wt% to 100 wt.%, while the coating thickness was limited to about 1 pm. The coatings were characterized by X-ray diffraction, scanning electron microscopy, atomic force microscopy, X-ray photoelectron spectroscopy, and Raman spectroscopy. The photocatalytic activity of obtained coatings was investigated by degradation of methyl orange, used as model pollutant. The results show that with increasing WO3 content up to 10 wt.% photoactivity increases as result of better charge separation that could effectively prevent the recombination of photogenerated electrons and holes. Further increase of WO3 content led to decrease of photoactivity.
Keywords:
Photocatalysis / Spray pyrolysis / Coatings / TiO2/WO3 compositesSource:
Surface and Coatings Technology, 2014, 258, 763-771Publisher:
- Elsevier
Projects:
- Graphitic and Inorganic Low-dimensional Nanostructures (RS-171035)
- The development of efficient chemical-engineering processes based on the transport phenomena research and process intensification principles (RS-172022)
- Chemical and structural designing of nanomaterials for application in medicine and tissue engineering (RS-172026)
DOI: 10.1016/j.surfcoat.2014.07.082
ISSN: 0257-8972