Recent Progress in Anodic Oxidation of TiO<sub>2</sub> Nanotubes and Enhanced Photocatalytic Performance: A Short Review
Xiaojiang Nie, Siqi Yin, Wenchao Duan, Zilong Zhao, Liang Li, Zhiqiang Zhang
Abstract
By adjusting the oxidation voltage, electrolyte, anodizing time and other parameters, TiO 2 nanotubes with high aspect ratio can be prepared by oxidation in organic system because anodic oxidation method has the advantage of simple preparation process, low material cost and controllable morphology. This review focusses on the influence of anodizing parameters on the morphology of TiO 2 nanotube arrays prepared by anodizing. In order to improve the photocatalytic activity of TiO 2 nanotubes under visible light and to prolong the life of photo-generated carriers, the research status of improving the photocatalytic activity of TiO 2 nanotubes in recent years is reviewed. This review focusses on the preparation and modification of TiO 2 nanotubes by anodic oxidation, which is helpful to understand the best structure of TiO 2 nanotubes and the appropriate modification methods, thus guiding the application of TiO 2 nanotubes in practical photocatalysis. Finally, the development of TiO 2 nanotubes is prospected.