中文摘要：

在（NH4）2TiF6的水溶液中，以铝基阳极氧化铝为模板，采用水热法制备了TiO2纳米管阵列。使用场发射扫描电镜和X射线衍射对水热合成产物进行了表征。实验结果表明，水热处理所得TiO2纳米管阵列具有特殊的形貌，其表面为连续的多孔状，断面为不连续、相互分离的管状；管口和管壁分别由平均粒度约45和25nm的微细TiO2颗粒紧密堆积而成．采用本方法制备的TiO2纳米管阵列无需热处理便已具有明显的锐钛矿型晶相特征。

英文摘要：

TiO2 nanotube arrays were prepared in situ on aluminum substrate via hydrothermal reaction, using ammonium hexafluorotitanate as treatment solution and anodic aluminum oxide attached to aluminum substrate as template. Field emission scanning electron microscopy and X-ray diffraction were carried out to characterize the as-synthesized product. The experimental results show that TiO2 nanotube arrays obtained through hydrothermal synthesis exhibit an especial morphology. The surface of the TiO2 nanotube arrays has continuous porous structure, while the cross-section has discrete and unattached tubular structure constituted of densely packed titania nanoparticles with an average particle size of 45 and 25 nm, respectively. Without any further heat treatment, anatase phase crystalline structure of the as-prepared nanotube arrays using this method has already occurred.