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Pure TiO_2 thin films and iron doped TiO_2 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 TiO_2 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 TiO_2 thin film is a better photocatalyst than pure TiO_2 thin film.The ultrastructural studies provide direct evidences for understanding the bactericidal mechanism of the TiO_2 photocatalyst.
Pure TiO 2 thin films and iron doped TiO 2 thin films on glass substrates were prepared by sol-gel method, and characterized by X-ray diffractometer (XRD), thermo-gravimetric analysis (TG-DSC) , scanning electron microscope (SEM) and UV-Vis spectroscopy, respectively. The experimental results show that pure TiO_2 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- However, the iron doped TiO 2 thin film is a better photocatalyst than pure TiO 2 thin film. Ultrastructureural studies provide direct evidences for understanding the bactericidal mechanism of the TiO 2 photocatalyst.