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Fabrication and Characterization of Photocatalyst Coatings by Heat Treatment in Carbon Powder for TiC Coatings

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Abstract:

Photocatalyst coatings on alumina (Al2O3) balls had been successfully fabricated by mechanical coating technique, with titanium carbide (TiC) powder and subsequent heat treatment in carbon powder. The effect of heat treatment conditions in carbon powder on the formed compounds, surface morphology and photocatalytic activity of photocatalyst coatings was investigated. XRD results show that the formed compounds change with increasing the heat treatment temperature in carbon powder, and rutile TiO2 on the surface of TiC coatings at 1073 K and 1173 K. The generated oxygen vacancies confirmed by XPS measurement, are in favor of narrowing band gap to enhance the visible-light photocatalytic activity of photocatalyst coatings. The photocatalytic activity of photocatalyst coatings has been effectively enhanced, and the samples fabricated at 1073 K and 1173 K for 2 h show higher activity. The fabrication strategy provides us a facile preparation procedure of visible-light responsive photocatalyst coatings.

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Periodical:

Solid State Phenomena (Volume 263)

Pages:

137-141

DOI:

https://doi.org/10.4028/www.scientific.net/SSP.263.137

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Online since:

September 2017

Authors:

Su Jun Guan, Liang Hao, Hiroyuki Yoshida, Hiroshi Asanuma, Fu Sheng Pan, Yun Lu*

Keywords:

Carbon Powder, Photocatalytic Activity, Surface Morphology, TiO2, Titanium Carbide

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© 2017 Trans Tech Publications Ltd. All Rights Reserved

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