Numerous bismuth-based semiconductors (BBSs) with sophisticated and desirable structures used as photocatalysts for efficient photocatalytic degradation of water organic contaminants have attracted considerable attention. However, regulating the crystal phases and phase transition of BBSs for promoted photocatalytic performance is ignored. Herein, the unique crystal structure and band structure features of each typical BBSs, and the vital roles on phase controlling of each phase were systematically presented based on the classification of BBSs. Notably, the critical factors for the phase transition of BBSs and intrinsic driving forces endowed by phases of BBSs for enhanced photocatalytic performance of organic contaminants removal were also elucidated. This review will provide systematical guidelines and horizons for regulating the crystal phase and phase transition of BBSs, promoting photocatalytic degradation and mineralization of organic contaminants.

许多具有复杂且理想结构的铋基半导体（BBS）用作光催化剂，可有效光催化降解水有机污染物，引起了人们的广泛关注。然而，为了提高光催化性能而调节 BBS 的晶相和相变却被忽视了。在此，基于BBS的分类，系统地介绍了每种典型BBS独特的晶体结构和能带结构特征，以及各相对相控制的重要作用。值得注意的是，还阐明了 BBS 相变的关键因素以及 BBS 相赋予增强光催化去除有机污染物性能的内在驱动力。本综述将为调节 BBS 的晶相和相变、促进有机污染物的光催化降解和矿化提供系统的指导方针和视野。