卤氧化铋光催化剂的改性研究进展

Research Progress in Bismuth Oxyhalide Photocatalyst and Modification of Its Catalytic Performance

卤氧化铋BiOX(X=Cl,Br,I)作为一种新型光催化剂,因其独特的层状结构和适合的禁带宽度,在可见光下表现出良好的光催化活性。本文主要对卤氧化铋催化剂的结构及其改性策略进行了综述。通过晶体结构和能带结构的设计合成,借助复合或掺杂改性,能进一步改善其光催化性能。最后指出,通过对制备方法、能带结构及其催化降解机理的深入研究,实现催化剂制备-结构-性能的可调控化,以拓展其应用领域是卤氧化铋光催化剂未来的研究方向。

BiOX(X=Cl,Br,I),a new type of photocatalyst,has shown good photocatalytic activity under visible light due to its unique layered structure and suitable band gap.This article reviews the structure and photocatalytic degradation performance of micro-nano bismuth oxyhalide catalysts.Through the design and synthesis of crystal structure and band structure,as well as the modification by composite or doping,the photocatalytic performance can be further improved.Finally,it is pointed out that the future research direction of bismuth oxyhalide photocatalyst is to achieve the controllability of catalyst preparation-structure-performance through the in-depth study of the preparation method,the band structure and its catalytic degradation mechanism,so as to expand its application field.