A series of β-Bi₂O₃/BiOCl heterojunction photocatalysts were successfully synthesized by in-situ treatment of β-Bi₂O₃ with HCl. Compared to pure β-Bi₂O₃, the as-synthesized β-Bi₂O₃/BiOCl composites displayed unexpectedly high visible-light photocatalytic activity for RhB degradation, which was even higher than that of P25 under UV light. Based on the results of transient photocurrent measurement and trapping experiments of active species, the enhanced photocatalytic activity could be ascribed to the formation of heterostructure between β-Bi₂O₃ and BiOCl, leading to the efficient separation of electron-hole pairs. This research may establish foundation for practical application of the new visible–light–active β-Bi₂O₃-based heterojunction photocatalysts.

一系列β-Bi系的₂ ö ₃ /的BiOCl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HCl。相比纯β-Bi系₂ ö ₃，所合成的β-Bi系₂ ö ₃ /的BiOCl复合材料显示出乎意料地高的可见光的光催化活性为罗丹明B降解，这是甚至高于在UV光下的P25。基于对结果的瞬时光电流测量和捕获活性物质的实验中，将增强的光催化活性可以归因于β-Bi系之间形成异质结构₂ ö ₃和BiOCl，导致电子-空穴对的有效分离。这项研究可能会为新的可见光活性β-Bi系的实际应用奠定了基础₂ Ø _3个基异质结光催化剂。