ISSN 1000-6818CN 11-1892/O6CODEN WHXUEU
Acta Phys Chim Sin >> 2014,Vol.30>> Issue(3)>> 513-519     doi: 10.3866/PKU.WHXB201401073         中文摘要
Visible Light Photocatalytic Activity of an In-Doped TiO2 Thin Film with a Three-Dimensional Ordered Structure
WANG Jing-Sheng1,2, WANG En-Jun3, YU Yan-Long1,2, GUO Li-Mei1,2, CAO Ya-An1,2
1 School of Physics, Nankai University, Tianjin 300071, P. R. China;
2 Key Laboratory of Weak Light Nonlinear Photonics, Ministry of Education, Teda Applied Physics Institutes, Nankai University, Tianjin 300457, P. R. China;
3 Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei 230031, P. R. China
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An In-doped TiO2 thin film with a three-dimensional (3D) ordered structure (IO-TiO2-In) was prepared by the self-assembly template method of polystyrene colloidal crystal growth and sol-gel method. The visible light photocatalytic activity of the IO-TiO2-In thin film for the degradation of formaldehyde is five times that of TiO2 and undoped IO-TiO2. The crystal structure, surface microstructure, and energy band structure of the catalyst were characterized by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM), and ultraviolet-visible (UV-Vis) diffuse reflectance spectroscopy. The IO-TiO2-In thin film is an ordered anatase structure, which increases the specific surface area and photo efficiency, compared with those of pure TiO2. Doped In ions form In2O3 and O-In-Clx (x=1, 2) species on the surface of the thin film. This increases the absorption of visible light, and promotes the separation of photogenerated charge carriers. It improves the efficiency of photogenerated charge carriers in the photocatalytic reaction at the solid/gas interface, and significantly increases the visible light photocatalytic activity.

Keywords: Three-dimensional ordered structure   TiO2 thin film   In ion doping   In2O3   In-Clx species   Visible light photocatalytic activity  
Received: 2013-11-28 Accepted: 2014-01-06 Publication Date (Web): 2014-01-07
Corresponding Authors: CAO Ya-An Email:

Fund: The project was supported by the National Natural Science Foundation of China (51072082, 21173121, 51372120, 51302269).

Cite this article: WANG Jing-Sheng, WANG En-Jun, YU Yan-Long, GUO Li-Mei, CAO Ya-An. Visible Light Photocatalytic Activity of an In-Doped TiO2 Thin Film with a Three-Dimensional Ordered Structure[J]. Acta Phys. -Chim. Sin., 2014,30 (3): 513-519.    doi: 10.3866/PKU.WHXB201401073

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