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TiO2 thin film photocatalysts coated onto glass plates were prepared by thermal decomposition of tetraisopropyl orthotitanate with a dip-coating process. In this Letter, the mechanism for photoinduced hydrophilicity of TiO2 film is clarified by adding the extra H2O2 on TiO2 surface. Results show that the photoinduced hydrophilicity of TiO2 film is inhibited with the presence of H2O2. The amount of...
A nano-sized anatase TiO2 sol was prepared by a chemical coprecipitisation-peptisation method. In this study, the visible-light response for photo-decolouration was observed in sol state. The decolouration rate of methylene blue was decreased with increasing light wavelength. The reason for the visible-light response of TiO2 sol was explained by the band-gap that is reduced due to the N impurity of...
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