Preparation of bioactive titania nanotbue arrays in HF/Na2HPO4 electrolyte

摘要：

The bioactive titania nanotube arrays were prepared by anodic oxidation in HF electrolyte with the addition of 5～10g/L Na2HPO4. The structure, morphology and bioactivity of titania nanotube arrays were characterized by X-ray diffraction(XRD), scanning electron microscopy (SEM), energy dispersion analyzer of X-ray(EDAX) and transmission electron microscopy (TEM). The formation mechanism of titania nanotube arrays were discussed. The results show that the HF concentration and anodic voltage have the important effect on the appearance and sizes of titania nanotube arrays. In the range of 5～20V, the greater the voltage, the larger will be the nanotube diameter. The formation of titania nanotube arrays are the results of the combined action of the anodization and chemical dissolution. An obvious apatite layer formed on the surface of titania nanotube arrays prepared in 0.5％HF containing 10g/L Na2HPO4 after soaking in simulated body fluid(SBF) for 7days, indicating that this titania nanotube array has the good in vitro apatite forming ability on its surface.

关键词： anodization titania nanotube array bioactivity

作者: Rongfang Liu Xiufeng Xiao Tian Tian Mingou Li Keguan Ouyang

作者单位: College of Chemistry and Materials Science,Fujian Normal University,Fuzhou,350007,PR China

会议类型: 国际会议

会议名称: 第六届中国国际纳米科技研讨会

会议地点: 成都

会议语种:英文

在线出版日期: 2007-11-19（万方平台首次上网日期，不代表论文的发表时间）