Herein, a novel BiOBr photocatalyst with partial surface modification by graphitized C (BiOBr-C_g) was synthesized through a hydrothermal method with hydrothermal carbonation carbon (HTCC) as a slow-releasing carbon source and characterized by experimental and theoretical methods. BiOBr-C_g exhibited excellent visible-light photocatalytic performance toward various refractory pollutants, such as bisphenol A, ibuprofen, ciprofloxacin, 2,4-dichlorophenoxyacetic acid, and diphenhydramine. The characterization results demonstrate that a strong molecular orbital interaction occurs between graphitized C and BiOBr, resulting in the formation of a new surface valence band on graphitized C. This not only promotes the oxidation of pollutants by surface holes but also reduces the recombination of carriers during the bulk phase transfer process, thereby increasing the number of photogenerated carriers. Intriguingly, the analytical results for degradation intermediates and other characterization techniques demonstrate that the pollutants adsorbed on the graphitized C of BiOBr-C_g can be directly excited through light irradiation and react along the organic radical degradation pathway in addition to pollutant degradation by holes and HO₂^•/O₂^•-.

在此，以水热碳酸化碳（HTCC）为缓释碳源，通过水热法合成了一种新型的石墨化碳表面改性的BiOBr光催化剂（BiOBr-C _{g ），并通过实验和理论方法对其进行了表征。}BiOBr- _Cg对双酚A、布洛芬、环丙沙星、2,4-二氯苯氧乙酸和苯海拉明等多种难降解污染物表现出优异的可见光光催化性能。表征结果表明，石墨化C和BiOBr之间发生强烈的分子轨道相互作用，导致石墨化C上形成新的表面价带。这不仅促进了污染物被表面空穴氧化，而且减少了载流子在过程中的复合。体相转移过程，从而增加光生载流子的数量。有趣的是，降解中间体和其他表征技术的分析结果表明，污染物吸附在 BiOBr-C _{g的石墨化 C除了通过空穴和HO 2} ^• /O ₂ ^•-降解污染物外，还可以通过光照射直接激发并沿有机自由基降解途径发生反应。