采用水热合成方法成功制备了聚苯胺/溴化氧铋/铁酸锌复合光催化剂PANI/BiOBr/ZnFe₂O₄。利用各种表征技术对样品的晶体结构和形貌进行分析。结果表明，与其他样品相比，PANI/BiOBr/ZnFe₂O₄复合材料在可见光照射下具有更高的光催化活性，对罗丹明B（RhB）的降解效率最高达到99.26%；同时，该复合材料在可见光下对硝基苯（NB）的还原具有良好的催化活性，转化效率可达87.1%。此外，根据PL谱和电化学阻抗谱（EIS）分析可以得出，PANI/BiOBr/ZnFe₂O₄复合材料的光催化性能提高可归因于电子空穴对的快速分离和转移。通过紫外-可见DRS光谱、M-S曲线分析、ESR谱和自由基捕获实验，提出了适合该体系的双Z型电子转移机理。

Polyaniline/bismuth bromide/zinc ferrite (PANI/BiOBr/ZnFe₂O₄) composite photocatalyst is rationally designed and successfully prepared via a facile hydrothermal synthesis method.The crystal structure and morphology of the samples are analyzed by various characterization techniques.It is shown that PANI/BiOBr/ZnFe₂O₄ composite photocatalyst exhibits higher photocatalytic activity under visible light irradiation than other samples.The highest degradation efficiency of rhodamine B (RHB) over PANI/BiOBr/ZnFe₂O₄ can reach 99.26%.Meanwhile,the composite photocatalyst exhibits an excellent catalytic activity for the reduction of nitrobenzene (NB) under visible light,with a conversion efficiency of 87.1%.Additionally,according to PL spectra and electrochemical impedance spectroscopy (EIS) analysis,it can be concluded that the improved photocatalytic performance of PANI/BiOBr/ZnFe₂O₄ composite can be attributed to the rapid separation and transfer of electron-hole pairs.The dual Z-scheme electron transfer mechanism suitable for this system is proposed by means of UV-Vis DRS spectra,M-S curves analysis,ESR spectra and free radical capture experiments.