以硝酸铋、碘化钾、溴化钠和聚乙二醇-400为主要原料,利用水热法制备出具有较小粒径的BiOBr/BiOI复合体,通过扫描电子显微镜( SEM)、X射线衍射( XRD)、紫外可见漫反射( DRS)等测试手段对样品的形貌、物相组成进行了表征。以罗丹明B为模拟污染物,研究了可见光下所制备样品的光催化性能。结果表明：BiOBr/BiOI复合体的光催化性能高于单一的BiOBr和BiOI,光照80 min后罗丹明B的降解效率可达95．6%。%Smaller particle size BiOBr/BiOI composite was prepared via a hydrothermal method using bismuth nitrate,sodium bro-mide,potassium iodide and polyethylene glycol-400 as main raw materials. The morphology and phase composition were character-ized by Scanning electron microscope(SEM),X-ray diffraction(XRD),UV-vis diffuse reflectance spectroscopy(DRS). With Rho-damine B as simulated pollutant,the photocatalytic performance of prepared samples was investigated under visible light. The results showed that photocatalytic performance of the BiOBr/BiOI composite was higher than single BiOBr and BiOI,the degradation rate of Rhodamine B is about 95. 6%after 80 min irradiation by visible light.
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