Journal
JOURNAL OF WUHAN UNIVERSITY OF TECHNOLOGY-MATERIALS SCIENCE EDITION
Volume 25, Issue 5, Pages 738-742Publisher
WUHAN UNIV TECHNOLOGY
DOI: 10.1007/s11595-010-0083-2
Keywords
C-doped; TiO2 films; daylight-induced; photocatalytic activity; spin-coated
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Funding
- Shan Xi Research Fund for Returned Scholars [2007-25]
- Shan Xi Open Fund for Key Laboratory [2008012013-7]
- The Specialized Fund for The Innovative of College Students of Tai Yuan City [09122018]
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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.
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