以COF为基体负载BiOBr纳米颗粒，采用水热法制备BiOBr/COF复合材料，利用XRD、SEM和PL等手段对其进行表征，考察了BiOBr与COF质量比、反应温度、反应时间等因素对RhB降解率的影响。结果表明，BiOBr呈现绒毛球状且均匀分布在片状COF表面。光催化降解RhB结果表明，在m（COF）：m（BiOBr）为64：100、水热温度为140℃、水热时间为10 h时，BiOBr/COF复合材料光催化活性最佳，RhB降解率达到98.91%。光催化剂重复使用4次，降解率仍达到80.12%。降解研究机理表明，·O^-₂是降解RhB的主要活性物质。

BiOBr/COF composites are prepared via loading BiOBr nanoparticles on COF matrix by hydrothermal method,and characterized by XRD,SEM and PL.The effects of the mass ratio of BiOBr to COF,reaction temperature,reaction time and other factors on the photodegradation rate of RhB over the composites are investigated.The results illustrate that BiOBr nanoparticles present fluffy spherical shape and distribute uniformly on the surface of sheet-like COF.RhB photodegradation results indicate that the samples synthesized under the conditions that the mass ratio of COF:BiOBr is 64:100,hydrothermal temperature remains at 140℃ and hydrothermal reaction lasts for 10 h show the best photocatalytic activity to RhB under visible light irradiation.The degradation rate of RhB can reach 98.91% accordingly.Moreover,the degradation rate can still reach 80.12% after four-time reuse of the same catalyst,indicating an excellent stability.It is found from studying on the degradation mechanism that ·O^-₂ is the main active substance for degrading RhB.

胡俊俊(1996-),女,硕士研究生,研究方向为光催化,1347650917@qq.com