Bactericidal and Photoeatalytie Activity of Fe³⁺-TiO₂ Thin Films Prepared by the Sol-gel Method

WANG Xun~(1,2) GONG Wenqi~1 (1.School of Resources and Environmental Engineering,Wuhan University of Technology,Wuhan 430070,China; 2.School of Urban Construction,Wuhan University of Science and Technology,Wuhan 430070,China)

摘 要：<正>Pure TiO₂ thin films and iron doped TiO₂ thin films on glass substrate were prepared by sol- gel method,and characterized by X-ray diffractometer（XRD）,thermo-gravimetric analysis（TG-DSC）,high resolution transmission electron microscope（HRTEM）,scanning electron microscope（SEM）and UV-Vis spectroscopy,respectively.The experimental results show that the pure TiO₂ thin films and iron doped TiO,thin films can destroy most of the escherichia coli and bacillus subtillis under the irradiation of 365 nm UV-light. However,the iron doped TiO₂ thin film is a better photocatalyst than pure TiO₂ thin film.The ultrastructural studies provide direct evidences for understanding the bactericidal mechanism of the TiO₂ photocatalyst.

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