Study on Synthesis in situ and Photocatalytic Activity of TiO2 Nanotubes Array Films: Study on Synthesis in situ and Photocatalytic Activity of TiO2 Nanotubes Array Films

The highly ordered aligned titania nanotubes thin films were successfully prepared by liquid phase deposition (LPD) method. Anodic aluminum oxide (AAO) used as starting material was immersed in an aqueous ammonium hexafluorotitanate ((NH4)2TiF6) solution. The results show that anatase titania can be obtained after the thin films are annealed at 400 deg C for 4h. The outside diameter of the titania nanotube is about 150nm and the wall thickness of the nanotubes is approximately 25nm.