Influence of the heating temperature on the properties of nickel doped TiO_2 films prepared by sol-gel method

摘要

Formation and properties of nickel doped TiCh films prepared by sol-gel method were studied using X-ray photoelectron spectroscopy. X-ray diffraction, atomic force microscopy, and energy dispersive X-ray analysis. The results demonstrate that sizes of TiO_2 crystallites increase with increasing heating temperature. Also, at temperatures above 800 = C diffusion of nickel onto the surfaces results in increased concentrations of nickel compounds on the surfaces. Similar to pure TiO_2 films the light-induced modification of hydrophilicity is observed also in the case of nickel doped TiO_2 films.