中文摘要：

在（NH4）2TiF6的水溶液中，以铝基阳极氧化铝膜为模板，采用水热法制备了Ti02纳米管阵列．采用场发射扫描电镜、X射线能量色散谱及X射线光电子能谱对所得纳米管阵列进行了表征，并探讨了其形成机制．结果表明，控制水热处理时间对制备形貌规整的纳米管阵列至关重要，较佳的水热处理时间为90min．采用本方法制备的纳米管阵列具有特殊的形貌，即表面的连续多孔结构和断面的不连续、分离的管状特征．这种特殊形貌的形成是由于[TiF6]^2-与阳极氧化铝模板的表面和断面具有不同的反应速率，水解产物优先在阳极氧化铝模板的表面沉积所致．

英文摘要：

TiO2 nanotube arrays were prepared by hydrothermal synthesis using ammonium hexafluorotitanate as deposition solution and anodic aluminum oxide attached to aluminum substrate as template. Field emission scanning electron microscopy, energy dispersive X-ray spectroscopy, and X-ray photoelectron spectroscopy were used to characterize the as-prepared nanotube arrays, and the formation mechanism of the nanotube arrays was discussed. The results indicate that hydrothermal treatment time has an important influence on the formation of nanotube arrays with a homogenous morphology, and the optimum reaction time is 90 min under the experimental conditions. The titania nanotube arrays prepared by this method exhibit an especial morphology, that is, a continuous porous surface and discrete tubular cross-section structure. The formation of such an especial morphology is attributed to preferential deposition of the hydrolysis product on the surface of the template, which is caused by the different reaction rate when [TiF6 ]^2- reacts with the surface and the cross-section of the template.