SUBSTRATE TEMPERATURE EFFECTS ON THE OPTICAL, HYDROPHILIC AND PHOTOCATALYTIC PROPERTIES OF TiO_2 NANOSTRUCTURED THIN FILM DEPOSITED ON GLASS SUBSTRATE

摘要

In this research, TiO_2 nanostructured thin films were deposited on glass substrates at different substrate temperatures by electron beam physical vapor deposition method. Crystalline structure, surface morphology and optical properties of the thin films were investigated by X-ray diffraction, field emission scanning electron microscopy and UV-Vis spectrophotometer, respectively. The hydrophilic and photocatalytic activities of the thin films during UV irradiation were evaluated by a water contact angle measurements and methylene blue degradation. The optical properties showed that substrate temperature did not have significant effect on the transparency of the TiO_2 thin films. In addition, water contact angle measurements and methylene blue degradation indicated that the TiO_2 thin film deposited at 300℃ had the best hydrophilic and photocatalytic properties.