Preparation and Enhanced Daylight-Induced Photo-Catalytic Activity of Transparent C-Doped TiO2 Thin Films

The transparent C-doped TiO2 nanostructure films were fabricated on the silicate glass substrates by sol-gel spin-coated method. The as-prepared films were characterized by X-ray diffraction （XRD）, scanning electron microscopy （SEM）, UV-visible absorption spectra （UV-vis） and X-ray photoelectron spe...

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Bibliographic Details
Published in:Journal of Wuhan University of Technology. Materials science edition 2010-10, Vol.25 (5), p.738-742
Main Authors: Bai, Aiying, Liang, Wei, Zheng, Gengle, Xue, Jinbo
Format: Article
Language:English
Subjects:
Chemistry and Materials Science
Materials Science
Scanning electron microscopy
Spectrum analysis
TiO2薄膜
X-rays
X射线衍射仪
光催化氧化
光诱导
紫外可见吸收光谱
纳米二氧化钛
薄膜制备
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Summary:The transparent C-doped TiO2 nanostructure films were fabricated on the silicate glass substrates by sol-gel spin-coated method. The as-prepared films were characterized by X-ray diffraction （XRD）, scanning electron microscopy （SEM）, UV-visible absorption spectra （UV-vis） and X-ray photoelectron spectroscopy （XPS）. The photocatalytic activity was evaluated via the photocatalytic oxidation of methylene blue in aqueous under daylight irradiation at room temperature. The results show that the daylight-induced photocatalytic activities of the as-prepared films are improved by the C-doping. The calcination temperatures significantly affect the morphology, microstructure and photocatalytic activity of the as-prepared samples. At 723 K, the C-doped TiO2 films exhibit the highest photocatalytic activity due to the synergetic effects of good crystallization, appropriate oxygen vacancies and strong absorption in the near UV and visible-light region.
ISSN:1000-2413
1993-0437
DOI:10.1007/s11595-010-0083-2