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Vol. 26 No. 8 (2014): Vol 26 Issue 8

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H2 Plasma Treatment to Prepare Reduced TiO2 Catalyst with High Oxygen Vacancies Content

https://doi.org/10.14233/ajchem.2014.16031
S.Z. Hu
Institute of Eco-environmental Sciences, Liaoning Shihua University, Fushun 113001, P.R. China
Z.L. Kang
School of Petrochemical Engineering, Liaoning Shihua University, Fushun 113001, P.R. China
Z.W. Ning
School of Petrochemical Engineering, Liaoning Shihua University, Fushun 113001, P.R. China
J.H. Ye
School of Petrochemical Engineering, Liaoning Shihua University, Fushun 113001, P.R. China
F.Y. Li
Institute of Eco-environmental Sciences, Liaoning Shihua University, Fushun 113001, P.R. China
Z.P. Fan
Institute of Eco-environmental Sciences, Liaoning Shihua University, Fushun 113001, P.R. China

Corresponding Author(s) : S.Z. Hu

hushaozheng001@163.com

Asian Journal of Chemistry, Vol. 26 No. 8 (2014): Vol 26 Issue 8

Abstract

A visible light responsive TiO2 with high oxygen vacancies content were prepared via H2 plasma treatment. X-ray diffraction, UV-visible spectroscopy, Raman and X-ray photoelectron spectroscopy were used to characterize the prepared TiO2 samples. The plasma treatment extended its absorption edges to the visible light region. Large amount of oxygen vacancies were created which proved by XRD and Raman. The photocatalytic activities were tested in the degradation of an aqueous solution of a reactive dyestuff, methylene blue, under visible light. The photocatalytic activities of TiO2 was influenced by the oxygen vacancies content. A possible mechanism for the photocatalysis was proposed.

Keywords

Oxygen vacancies Ti3 species TiO2 Methylene blue Photocatalysis
Hu, S., Kang, Z., Ning, Z., Ye, J., Li, F., & Fan, Z. (2014). H2 Plasma Treatment to Prepare Reduced TiO2 Catalyst with High Oxygen Vacancies Content. Asian Journal of Chemistry, 26(8), 2403–2406. https://doi.org/10.14233/ajchem.2014.16031
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