纳米二氧化钛光催化剂的表面修饰研究及应用进展

Research and application of surface modification of nano-titanium dioxide photocatalyst

纳米二氧化钛的表面修饰,目的在于使其综合性能得到较大改善,根据不同的使用目的,可以选用不同的改性剂及改性工艺。采用有机物改性方法可以改善纳米TiO2颗粒表面的润湿性和分散性;采用无机物包裹的方法可以提高纳米TiO2颗粒的耐久性和化学稳定性;采用光活性化合物对纳米TiO2进行表面改性可以提高其催化氧化性能。概述了纳米TiO2的制备方法和光催化性能,重点介绍了主要的表面改性剂和表面修饰工艺方法,并提出当前对纳米TiO2的研究重点。

Corresponding to the different purposes of nano-TiO2 surface modification,different modifiers or more complex methods and technology can be used.Methods of organic modification improve the nano-titanium dioxide particles on the surface of wetting and dispersion.Methods of inorganic package improve chemical stability and the durability.The preparation of nano-TiO2 photocatalytic properties and methods are overviewed,focusing on the main surface modifier technology and surface modification methods.