Preparation of High-Orderly TiO2 Nanotubes in Organic Solutions and characterization of C-doping of TiO2

摘要：

High-orderly TiO2 nanotubes arrays were fabricated by anodic oxidation of pure titanium substrate in organic electrolyte containing fluoride. Different morphological nanotubes of titania were obtained through controlling the different anodization voltages and durations. The length of the longest nanotubes was approximately 60μm and a length-to-width aspect ratio was about 600. The nanotube layers were then annealed at different temperatures (450℃，550℃ and 650℃) in air for 2h. The samples were characterized by SEM,XRD,EDS and UV-VIS spectrometer. The X-ray diffraction demonstrated that the as-anodized samples are amorphous and the structure can change to antanse and rutile when they annealed at higher temperature. The EDS microanalysis indicated the presence of carbon in the TiO2 nanotubes. The result of degradation of methylene blue shown clearly that the activity of photocatalysis with C-doping TiO2 nanotubes increased by 10％.

关键词： Titanium dioxide nanotubes anodization carbon doping photocatalysis

作者: 樊小燕 张云怀 肖鹏 胡夫 张怀

作者单位: 重庆大学化学化工学院,重庆400030,中国 重庆大学数理学院,重庆400030,中国

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）