复合材料WO_(3)-TiO_(2)的制备及光催化应用研究进展

Research Progress on Preparation and Photocatalytic Application of Composite Material WO_(3)-TiO_(2)

TiO_(2)作为一种优良的半导体材料,广泛适用于工业生产,同时作为一种廉价无害的催化剂,应用于有机污染物降解和光解水制氢,WO_(3)与TiO_(2)均具有一定的光催化性能,但由于二氧化钛对禁带宽度较大,电子-空穴对恢复速率快,导致其对可见光的响应小。TiO_(2)与WO_(3)的复合能够显著改善TiO_(2)的光催化性能。主要介绍近十年来WO_(3)-TiO_(2)材料的一些复合制备方法和应用,最后对其发展方向进行展望。

As an excellent semiconductor material,TiO_(2)is widely used in industrial production.At the same time,as a cheap and harmless catalyst,it is used in the degradation of organic pollutants and photolysis of water for hydrogen production.Both WO_(3)and TiO_(2)have certain photocatalytic properties,but due to the band gap of the titanium oxide pair is large,and the recovery rate of the electron-hole pair is fast,resulting in a small response to visible light.The composite of TiO_(2)and WO_(3)can significantly improve the photocatalytic performance of TiO_(2).Some composite preparation methods and applications of WO_(3)-TiO_(2)materials in the past ten years were mainly introduced,and its development direction was put forward finally.