Bi2MoO6 photocatalyst: structure, preparation, modification method and application in water cleaning

Abstract Humans widely utilize solar energy as a green and sustainable resource. Furthermore, semiconductor photocatalysis can use sunlight for reaction without other additional energy, so it has received wide attention. Bi2MoO6 shows excellent potential in visible photocatalysis due to its narrow band gap, high stability, and non-toxicity. This review focuses on the modification methods of Bi2MoO6 photocatalysts. By adjusting the treatment of Bi2MoO6 with different modifications, the photogenerated electron-hole complexation can be retarded, and its specific surface area increases, thus enhancing its photocatalytic performance. This article begins with describing the current state of photocatalysts, the mechanism of the photocatalytic process, as well as important bottlenecks and affecting factors. Then, three techniques for making Bi2MoO6 photocatalysts are provided, and their attributes are compared in various ways. Four approaches for enhancing the photocatalytic performance of the material are outlined and addressed. Then, the organic pollutant degradation performance of Bi2MoO6 photocatalysts generated by various modification techniques is studied. Finally, the existing issues with Bi2MoO6 photocatalysts and ways to improve them are explored.