A Review on TiO_2 Nanotube Film Photocatalysts Prepared by Liquid-Phase Deposition

摘要

TiO_2 nanotube film is a promising photocatalyst associated with its unique physical and chemical properties such as optic, electronic, high specific surface area. Liquid-phase decomposition provides a feasible way for the preparation of functional thin film. This paper reviews and analyzes the formation mechanism of TiO_2 nanotube film by liquid phase deposition. The effect of preparation parameters, such as the kinds of electrolyte solution for the preparation of anodic alumina template, volume fraction of Al_2O_3 on the template, the concentration of the deposition solution, and heat treatment, on the formation of TiO_2 nanotube film has been analyzed. The effects of doping of metallic and nonmetallic elements on the photocatalytic activity of TiO_2 nanotube have been discussed.