Bioactivity of L-b-L Self-assembly TiO2 Hollow Spheres by UV Irradiation Enhanced

摘要：

Using nano-TiCO2 particles obtained by hydrolysis of titanium oxysulfate (TiOSCO4) as the precursor, and polystyrene (PS) spheres as the template, TiO2 hollow spheres were successfully deposited on CPTi substrates through layer-by-layer self-assembly technology. After ultraviolet light (UV) irradiation, the TiO2 coatings were soaked in simulated body fluid (SBF) to explore their bioactivities. The effects of UV irradiation time and UV irradiation media on the bioactivities of nano TiO2 coatings were investigated. The results show that bone-like apatite can be formed on the surface of nano TiO2 coating irradiated by UV, and this reveals that the irradiated coating has good bioactivity. The amount of apatite formed on the surface of the coating increases with the increase of UV irradiation time. UV-irradiated media also influence the bioactivity of the coating. The bioactivities of nano TiO2 coatings irradiated in air and SBF are better than that in water.

关键词： TiO2 hollow sphere Self-assembly UV Irradiation Bioactivity

作者: Fan Xiao Wei Li Fei Gao Zhixian Zhang

作者单位: Institute of Materials and Surface engineering, Zhejiang University of Technology,Hangzhou 310014, China

会议类型: 国际会议

会议名称: 2011 International Conference on Mechatronics and Materials Processing(2011年机电一体化与材料加工国际会议 ICMMP)

会议地点: 广州

会议语种:英文

页码: 1495-1498

在线出版日期: 2011-11-18（万方平台首次上网日期，不代表论文的发表时间）