资源描述：
《高可见光活性tiobioi的制备及其光催化性能》由会员上传分享，免费在线阅读，更多相关内容在学术论文-天天文库。
1、高可见光活性TiO2-BiOI的制备及其光催化性能黄凤萍1，2，崔梦丽1，2，郭宇煜1，2，辛萌1，2，刘博学1，2，周鑫敏1，2，丁力3(1.陕西科技大学化学与化工学院，陕西西安710021；2.陕西省轻化工助剂重点实验室，陕西西安710021；3.咸阳陶瓷研究设计院，陕西咸阳712000）摘要：以钛酸丁酯、亚氨基二乙醇、碘化钾和五水合硝酸铋为原料，通过溶剂热法将TiO2均匀地负载到BiOI花状微球上，制备了TiO2-BiOI复合光催化剂。通过XRD、FTIR、XPS、SEM、TEM和UV-vis
2、-NIR对样品进行了表征。以甲基橙为目标降解物，测定了TiO2-BiOI复合光催化剂在可见光下的光催化性能。结果表明，纳米TiO2的加入为复合光催化剂比表面积的增加作出了贡献，TiO2与BiOI之间形成的异质结结构可以促进光生电子和空穴分离，从而达到提高复合光催化剂光催化性能的目的。n(Ti)/n(Bi)=0.4的TiO2-BiOI复合光催化剂表现出最佳的光催化降解性能，可见光（λ>420nm）照射60min，其对甲基橙的降解率达到95%，远高于纯的TiO2和BiOI光催化剂。关键词：溶剂热法；二氧
3、化钛；碘氧化铋；可见光中图分类号：O643.32文献标志码：APreparationandPhotocatalyticPerformanceofTiO2-BiOIPhotocatalystwithHighVisible-LightActivityHUANGFeng-ping1,2,CUIMeng-li1,2,GUOYu-yu1,2,XINMeng1,2,LIUBo-xue1,2,ZHOUXin-min1,2,DingLi3(1.CollegeofChemistryandChemicalEnginee
4、ring,ShaanxiUniversityofScience&Technology,Xi'an710021,Shaanxi,China;2.ShaanxiKeyLaboratoryofChemicalAdditivesforIndustry,Xi'an710021,Shaanxi,China;3.XianyangResearch&DesignInstituteofCeramics,Xianyang712000,Shaanxi,China)Abstract:TiO2-BiOIphotocatalys
5、tswerepreparedbysolvothermalmethodusingbutyltitanate,diethanolimine,potassiumiodideandbismuthnitratepentahydrateasrawmaterials,inwhichTiO2nanoparticleswereloadedonBiOIflowermicrospheres.TheobtainedsampleswerecharacterizedbyXRD,FTIR,XPS,SEM,TEMandUV-vis
6、-NIRspectrophotometer.ThephotocatalyticactivityofTiO2/BiOIcompositeforthedegradationofmethylorange(MO)wasstudiedundervisiblelight.TheresultsshowedthattheadditionofnanoTiO2contributedtotheincreaseofspecificsurfaceareaofcomposite.Theheterogeneousstructur
7、eformedbetweenTiO2andBiOIcouldpromotetheseparationofphotogeneratedelectronsandholes,whichimprovedthephotocatalyticperformanceofcompositephotocatalyst.ItwasfoundthatWhenthemolarratioofTi:Biwas0.4,thesamplehadthehighestphotocatalyticactivityforthedegrada
8、tionofMOundervisiblelight(λ>420nm)irradiationfor60min,andthedegradationratewas95%.Theas-preparedTiO2-BiOIcompositeexhibitedhigherperformancethanthepureTiO2andBiOItowardsphotocatalyticdegradationofMO.Keywords:solvothermalmethod;titaniumd
