钼酸铋半导体光催化剂的研究新进展

钼酸铋拥有典型的Aurivillius型结构,主要由(Bi_2O_2)~(2+)层及MoO_6钙钛片层状结构组成,显示出良好的光催化性能,广泛用于有机污染物的降解,成为近年来最受关注的一类可见光催化材料。综述钼酸铋半导体光催化剂的制备方法,以及通过构建异质结、掺杂、固溶体、金属沉积、量子点等改性措施提高其光催化活性,归纳和总结钼酸铋光催化剂在催化氧化反应、降解有机废水、电化学储能和CO_2的还原、气体传感器等方面的应用,并对钼酸铋光催化剂发展进行展望。

New research progress of bismuth molybdate semiconductor photocatalyst

Bismuth molybdate,with a typical Aurivillius-type structure,is composed of (Bi₂O₂)^{2 +} layer and MoO₆ perovskite layer,and shows good photocatalytic performance.It is widely used in the degradation of organic pollutants and becomes one of the most concerned visible photocatalytic materials in recent years.In this paper,the preparation methods of Bi₂MoO₆ semiconductor photocatalyst in recent years are summarized.The photocatalytic activity of Bi₂MoO₆ semiconductor photocatalyst is improved by constructing heterojunctions,doping,solid solution,metal deposition and quantum dot modification.Finally,the applications of bismuth molybdate photocatalyst in catalytic oxidation,organic wastewater treatment,electrochemical energy storage,CO₂ reduction and gas sensors are summarized,and the future development of bismuth molybdate photocatalyst is prospected.