论文期刊

Ultraviolet-enhanced wettability and bioactivity of self-organized TiO2 nanotube layer




作者: Lan Zhang, Yong Han
发表/完成日期: 2010-09-13
期刊名称: Journal of Nanoscience and Nanotechnology
期卷:
相关文章: 11JNN-3941-INEC.pdf   
论文简介
TiO2 nanotube layer was prepared by anodic oxidation of commercial pure Ti in aqueous solutions containing 1M (NH4)2SO4 and 0.15M NH4F. The as-anodized layer consists of self-organized TiO2 nanotubes with amorphous structure, which transforms to anatase after annealing at 450 °C for 3 h. The annealing treatment of the nanotube layer can significantly enhance its hydrophilicity and bioactivity. Furthermore, UV irradiation of the annealed TiO2 nanotube layer does not alter its surface morphology and phase component, however, can improve hydrophilicity and bioactivity. The enhanced hydrophilicity and bioactivity are thought to result from the abundant basic Ti–OH groups on the UV-irradiated TiO2 nanotube layer.