Abstract
Anatase TiO 2 films were successfully synthesized by a modified sol-gel method wherein peroxo titanic acid solution was derived from TiCl 4/ethanol/water solution at room temperature. The as-prepared films were further surface-doped by photodeposited Fe 2O 3 and Cr 2O 3 to improve its physicochemical properties. The phase and structure of the films were investigated by X-ray diffraction, scanning electron microscopy and X-ray photoelectron spectroscopy. The physicochemical properties of the films were also measured. The results show that both hydrophilicity and photocatalytic activity of the films were remarkably improved by doping transition metal ion Fe 3+. In case of Cr 3+ doped films, hydrophilicity was also significantly enhanced but photocatalytic activity for methyl orange under UV irradiation was still comparable with the undoped films.
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