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《AgBiOX(X=Cl,B r,1)复合光催化剂的制备、表征及其光催化性能.pdf》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、物理化学学报(WuliHuaxueXuebao)MarchActaP矗.一Chim.Sin.2012,28(3),647-653647[Article]doi:10.3866/PKU.WHXB201201051www.whxb.pku.edu.cnAg/BiOX(X=Cl,Br,1)复合光催化剂的制备、表征及其光催化性能余长林操芳芳舒庆’包玉龙’谢志鹏’YUJimmyC。杨凯’(江西理工大学冶金与化学工程学院,江西赣州341000;。福建省光催化重点实验室一省部共建国家重点实验室培育基地福州大学,福州350002;香港中文大学化学系,香港)摘要:采用光化学沉积法制备了一系列不
2、同Ag含量的新型Ag/BiOX(X=CI,Br,I)复合光催化剂,应用X射线粉末衍射(XRO)、扫描电镜(SEM)、X射线光电子能谱(xPs)、光致发光(PL)谱、紫外-可见(uv-vis)光谱和N2物理吸附等手段对催化剂进行表征,并以420nm3、光生电子(e一)和空穴(h)的复合.Ag的存在大幅度提高了BiOX对染料的光催化降解活性.当负载Ag的质量分数(为1%一2%时,可使BiOCl、BiOBr和BiOI光催化活性分别提高了1O、13和2倍.Ag/BiOX复合光催化剂具有更高催化活性的原因是复合光催化剂对可见光有很强的吸收能力,同时产生了银等离子体光催化作用和银抑制了Ag/BiOX(X=CI,Br,1)的光生电子.空穴的复合.关键词:铋氧卤化化合物:银沉积:光催化:可见光:促进:酸性橙中图分类号:0643;TB321Preparation,CharacterizationandPhotoCataIyticPerfo4、rmanceofAg/BiOX(X=Cl,Sr,I)CompositePhotocatalystsYUChang--Lin’’CAOFang-Fang’-SHUQing’BAOYu-Long’XIEZhi-Peng’YUJimmyC。YANGKai’(SchoolofMetallurgyandChemicalEngineering,JiangxiUniversityofScienceandTechnology,Ganzhou341000,JiangxiProvinceP_R.China;:FujianProvincialKeyLaboratoryofPhotocatalysi5、s—StateKeyLaboratoryBreedingBase,FuzhouUniversity,Fuzhou350002,R.China;DepartmentofChemistry,TheChineseUniversityofHongKong,HongR.China)Abstract:AseriesofhoveJbismuthoxyhalideAg/BiOXfX=CI,BI)compositephotocatalystsweresynthesizedbyasOlutiOn-basedph0tOdep0sltedmethodatroomtemperature.Theresu6、ltinqproductswerecharacterizedbypowderX—raydifraction(XRD),scanningelectronmicroscopy(SEM),X-rayphotoelectronspectroscopy(XPS),photoluminescence(PL)emissionspectroscopy,UV-Visdifusereflectancespectroscopy(DRS),andN2physicaladsorption.Thephotocatalyticactivityofthesampleswasevaluatedbyphotoc7、atalyticdegradationofacidorangeIIundervisiblelight(420nm
3、光生电子(e一)和空穴(h)的复合.Ag的存在大幅度提高了BiOX对染料的光催化降解活性.当负载Ag的质量分数(为1%一2%时,可使BiOCl、BiOBr和BiOI光催化活性分别提高了1O、13和2倍.Ag/BiOX复合光催化剂具有更高催化活性的原因是复合光催化剂对可见光有很强的吸收能力,同时产生了银等离子体光催化作用和银抑制了Ag/BiOX(X=CI,Br,1)的光生电子.空穴的复合.关键词:铋氧卤化化合物:银沉积:光催化:可见光:促进:酸性橙中图分类号:0643;TB321Preparation,CharacterizationandPhotoCataIyticPerfo
4、rmanceofAg/BiOX(X=Cl,Sr,I)CompositePhotocatalystsYUChang--Lin’’CAOFang-Fang’-SHUQing’BAOYu-Long’XIEZhi-Peng’YUJimmyC。YANGKai’(SchoolofMetallurgyandChemicalEngineering,JiangxiUniversityofScienceandTechnology,Ganzhou341000,JiangxiProvinceP_R.China;:FujianProvincialKeyLaboratoryofPhotocatalysi
5、s—StateKeyLaboratoryBreedingBase,FuzhouUniversity,Fuzhou350002,R.China;DepartmentofChemistry,TheChineseUniversityofHongKong,HongR.China)Abstract:AseriesofhoveJbismuthoxyhalideAg/BiOXfX=CI,BI)compositephotocatalystsweresynthesizedbyasOlutiOn-basedph0tOdep0sltedmethodatroomtemperature.Theresu
6、ltinqproductswerecharacterizedbypowderX—raydifraction(XRD),scanningelectronmicroscopy(SEM),X-rayphotoelectronspectroscopy(XPS),photoluminescence(PL)emissionspectroscopy,UV-Visdifusereflectancespectroscopy(DRS),andN2physicaladsorption.Thephotocatalyticactivityofthesampleswasevaluatedbyphotoc
7、atalyticdegradationofacidorangeIIundervisiblelight(420nm
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