钒酸铋光催化剂的制备及改性

Preparation and Modification of Bismuth Vanadate Photocatalyst

本文综述了BiVO_(4)及其复合材料在光催化技术方向中的发展概况。概述了光催化基本原理与BiVO_(4)的晶体结构,阐述了BiVO_(4)以其复合材料的合成方法,并进一步通过阐明离子掺杂、异质结复合等改性方式的机理,表明BiVO_(4)光催化材料在环境净化领域中的应用前景。尽管目前的BiVO_(4)光催化材料仍然存在量子产率低、光生载流子复合高等问题,但可通过优化其结构形貌及制备工艺等,改善材料性能,提高实际应用价值。

This paper reviews the development of BiVO_(4) and its composite materials in the field of photocatalysis technology.Firstly,the basic principle of photocatalysis and the crystal structure of BiVO_(4) are summarized.Secondly,the synthesis methods of BiVO_(4) and its composite materials are described.Furthermore,the mechanism of modification methods such as ion doping and heterojunction recombination is explained to show that BiVO_(4) photocatalytic materials have application prospects in the field of environmental purification.Although the current BiVO_(4) photocatalytic materials still have the problems of low quantum yield and high photo-generated carrier recombination,the structure and preparation process can be optimized to improve the material performances and increase the practical application value.