| Summary: | 碩士 === 元智大學 === 化學工程學系 === 92 === High efficient TiO2 photocatalyst thin films were fabricated in this study using sol-gel method and low temperature treatments. The films were prepared by the sol-gel solution coated on glass using hot water bath, wet-air, and dry-air thermal treatment. The photocatalytic effects of operating variables, such as the temperature, time, and atmosphere of thermal treatments on the films were discussed. The material properties affecting on the photocatalytic ability of the films were measured by different analytical instruments. Results show that thermal processing methods can greatly affect the photocatalytic ability of the TiO2 films. The best quality of photocatalytic films were fabricated by wet air at 100oC. In addition, the quality of the films can not be improved using higher temperature and longer time in thermal process. The presence of PEG added in the sol-gel process was found the important factor to affect the photocatalytic effect of the films. The effects of the thermal treatments on the photocatalytic influences were discussed.
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