改性钨酸铋用于光催化降解有机污染物研究进展

Research Progress on Photocatalytic Degradation of OrganicPollutants by Modified Bismuth Tungstate

钨酸铋(Bi2WO6)具有较大的表面积和较多的光催化活性位点,因而展示出较高的光催化性能.但是,其中的光生电子-空穴对的快速复合明显地限制了其能量转换效率,进而影响其光催化活性的发挥.研究发现改性Bi2WO6能够有效地解决这些问题,提高其催化活性.文章综述了改性Bi2WO6常见制备方法,并探讨了改性Bi2WO6发挥光催化降解活性的影响因素,从而为改性Bi2WO6的进一步研究提供依据和新的思路.

Bismuth tungstate(Bi2WO6)shows higher photocatalytic performance due to its larger surface area and more photocatalytic active sites.However,the rapid recombination of photogenerated electron-hole pairs obviously limits its energy conversion efficiency,which in turn affects its photocatalytic activity.The study found that modified Bi2WO6 can effectively solve these problems and improve its catalytic activity.This article summarizes the common preparation methods of modified Bi2WO6,and discusses the factors that modified Bi2WO6 exerts photocatalytic degradation activity,so as to provide basis and new ideas for the further research of modified Bi2WO6.