作者:\n\t米世新，牟红旭，杨陆娟，王剑浩，吴鹏伟，张显华，刘子薇，庄艳丽\n

Authors:\n\tMI Shixin,MU Hongxu,YANG Lujuan,WANG Jianhao,WU Pengwei,ZHANG Xianhua,LIU Ziwei,ZHUNG Yanli\n
摘要:\n\t以BiOI为前驱体，采用化学沉淀法对W₁₈O₄₉(2％)/BiOI复合材料进行了制备，为了研究该材料的光催化性能，利用X射线粉末衍射(XRD)、扫描电子显微镜(SEM)、紫外-可见漫反射光谱(UV-Vis DRS)和荧光分光光度计（PL）对样品进行表征。结果表明，W₁₈O₄₉的引入未改变BiOI的晶型结构，纯BiOI的降解率约为21%，与W₁₈O₄₉复合后材料的降解率约达到98%，复合后材料的降解率显著高于纯物质的降解效率，纯BiOI材料和W₁₈O₄₉的带隙宽度分别约为1.97eV和3.06eV，理论上可形成异质结，有助于加速电子转移速率，有效降低了电子和空穴对的复合，很好的提升材料的光催化活性。\n

Abstract:\n\tUsing BiOI as the precursor, the W₁₈O₄₉(2%)/BiOI material was prepared by chemical precipitation method.In order to study the photocatalytic performance of the material.The samples were characterized by X-ray powder diffraction (XRD), scanning electron microscopy (SEM), ultraviolet visible diffuse reflectance spectroscopy (UV-Vis DRS) and fluorescence spectrophotometer (PL).The results showed that the introduction of W₁₈O₄₉did not change the crystal structure of BiOI, and the degradation rate of pure BiOI was about 21%, and the degradation rate of the material with W₁₈O₄₉reached about 98%.The degradation rate of the composite material is significantly higher than that of pure material.The band gap width of pure BiOI and pureW₁₈O₄₉meterials are about 1.97eVand 3.06eV. They can form heterojunctions, accelerate the electron transfer rate, effectively reduce the recombination of electron and hole pairs, and improve the photocatalytic activity of the material.\n


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