A series of β-Bi₂O₃/BiOBr heterojunction photocatalysts were successfully synthesized by in-situ treatment of β-Bi₂O₃ with HBr. The as-synthesized β-Bi₂O₃/BiOBr composites displayed remarkably enhanced visible light photocatalytic activity for RhB degradation compared to pure β-Bi₂O₃ and BiOBr. The value of the apparent rate constant for the optimal sample was about 50.9 and 7.1 times higher than that of pure β-Bi₂O₃ and BiOBr, respectively. The enhanced photocatalytic activity is attributed to the formation of a heterojunction between β-Bi₂O₃ and BiOBr, which leads to an efficient separation of electron-hole pairs. The present work provides a new type of visible-light-active β-Bi₂O₃-based heterojunction photocatalysts that are promising for practical applications.

一系列β-Bi系的₂ ö ₃ / BiOBr异质结光催化剂成功通过原位治疗的β-Bi系合成₂ ö ₃用HBr。所合成的β-Bi系₂ ö ₃相比纯β-Bi系/ BiOBr复合材料显示的显着增强的可见光的光催化活性为罗丹明B降解₂ ö ₃和BiOBr。表观速率常数为最佳采样的值约高50.9和7.1倍比纯β-Bi系的₂ ö ₃和BiOBr，分别。增强的光催化活性是由于β-Bi系之间形成的异质结的₂ ö₃和BiOBr，可有效分离电子-空穴对。目前的工作提供了一种新类型的可见光活性β-Bi系的₂ ö ₃即是有希望的实际应用基于异质结的光催化剂。