富铋型卤氧化铋光催化剂的研究进展

Research progress of bismuth-rich bismuth oxyhalides using asphotocatalysts

光催化技术被认为是解决全球能源短缺和环境危机最有前景的途径之一,开发可见光响应的高效光催化剂一直是光催化领域的研究热点。作为对传统光催化剂卤氧化铋(BiOX,X=Cl、Br、I)的延续和发展,富铋型卤氧化铋(Bi_(x)O_(y)X_(z))可调节的能带结构为实现其优异的光催化性能提供良好保障。主要综述了可控合成Bi_(x)O_(y)X_(z)的方法,包括固相热转化法、碱化沉淀/水热/溶剂热法等,并且总结Bi_(x)O_(y)X_(z)在光催化领域应用,介绍其在降解有机污染物、裂解水制氢、还原二氧化碳及固氮等方面的应用。最后,提出了目前Bi_(x)O_(y)X_(z)存在的问题和未来发展方向。加深对Bi_(x)O_(y)X_(z)的了解,并为设计和优化用于能源和环境应用的先进铋基光催化材料开辟新方向。

Photocatalytic technology is regarded as one of the most promising pathways to solve the global energy shortage and environmental crisis,and the development of efficient photocatalysts with visible light response has always been a research hotspot in the photocatalytic field.As the continuation and development of traditional photocatalyst bismuth oxyhalides(BiOX,X=Cl,Br,I),the bismuth-rich bismuth oxyhalides(Bi_(x)O_(y)X_(z))shows tunable band structure which benefits to improve the photocatalytic activity.The methods of controlled synthesis of Bi_(x)O_(y)X_(z) were summarized,including solid phase thermal conversion method,alkaline precipitation/hydrothermal/solvothermal method,etc.The photocatalytic applications of Bi_(x)O_(y)X_(z) were also introduced in degrading organic pollutants,splitting water to hydrogen,reducing carbon dioxide and nitrogen fixation.Finally,the current problems and future development directions of Bi_(x)O_(y)X_(z) were proposed.The review will deepen the understanding of Bi_(x)O_(y)X_(z) and open new directions for the design and optimization bismuth-based photocatalytic materials for energy and environmental applications.