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ID:52382155
大小:2.18 MB
页数:10页
时间:2020-03-27
《硫掺杂氧化锡纳米材料的固相合成及其可见光降解百草枯.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、第31卷第4期无机化学学报Vo1.31No.42015年4月CHINESEJOURNALOFIN0RGANICCHEMISTRY649658硫掺杂氧化锡纳米材料的固相合成及其可见光降解百草枯贺仲兵1,2刘少友,l,3闵宗义2杨红芸1聂信1(凯里学院化学与材料工程学院,凯里556011)(湖南大学环境科学与工程学院,长沙432001)(广西大学环境学院,南宁530004)摘要:以十二烷基苯磺酸钠(SDBS)~,采用低温固相反应法合成了硫掺杂二氧化锡fS.SnO2)纳米粉体材料.并用XRD、XPS、SEM、UV.Vis、FTIR及HR—TEM等技术对材料进行
2、了表征,探讨了S掺杂SnO,纳米材料对百草枯的可见光降解性能,分析了S掺杂效应的作用机理。结果表明,采用固相反应法所得SnO及S—SnO纳米材料的禁带宽度变窄,SDBS对材料的表面结构具有一定的调控作用。S是以S0v)和ScvD的形式进入SnO晶格形成Sn叫sO晶体结构而不是进入SnO晶格间隙,Sn—O.S键的弯曲振动峰介于930~980am--之间S的掺杂使SnO纳米材料表面活性增强,光催化降解百草枯的活性依次为SnO3、的羟基和进入SnO,晶格的S.有利光生电荷的有效分离关键词:硫掺杂;二氧化锡;固相合成;可见光降解;百草枯中图分类号:0643.36文献标识码:A文章编号:1001—4861(2015)04.064910DoI:10.11862/CJIC.2015.117SulfurDopedTinOxideNanoparticles:SolidStateSynthesisandPerformanceforVisible-LightDrivenPhotoeatalyticDegradationofParaquatHEZhong—BingLIUShao—You’YANGH4、ong—YunMINZong—YiNIEXineCollegeofChemistryandMaterialsE嚼erKailiUniversity,Kaili,Gu&hou556011,China)(2CollegeofEnvirnomentalScienceandEngineering,HunanUniversity,Changsha410082,China)(3SchoolofEnvirnomentalStudies,GuangxiUniversity,Nanning530004,China)Abstract:Sulfurdopedtinoxide(5、S-SnO2)nanoparticleswithhighvisiblelight—drivenactivitywassynthesizedbyafacilesolidstatesynthesisapproachatlowtemperatureusingsodiumdodecylbenzenesulfonate(SDBS)asatemplate.ThesampleswerecharacterizedbyXRD,XPS,SEM,UV—Vis,HR—TEM,andFIYIR.Thedopingmechanismandphotocatalyticdegradat6、ionofparaquatundervisiblelightirradiationwereinvestigated.TheresultsshowthattheSDBShasasignificantregulatingeffectonthesurficialstructureforbothSnO2andS—SnO2preparedbysolidstatesynthesis.TheSelementissuccessfullyincorporatedintothelatticeofSnO2withS(1V)ands(v0ratherthanembedsinto7、theintersticeofSnO2lattice.S-dopingenhancesthephotocatalyticactivityofSnO2duetothepresenceofalargenumberofhydroxylsonthesulxCaceands(v0inthelatticeofSnO2benefitingthelightabsorptionandeffectivechargeseparation,andit~llowsanorderofSnO28、;solidstatesynthesis;photoeatalytiedegra
3、的羟基和进入SnO,晶格的S.有利光生电荷的有效分离关键词:硫掺杂;二氧化锡;固相合成;可见光降解;百草枯中图分类号:0643.36文献标识码:A文章编号:1001—4861(2015)04.064910DoI:10.11862/CJIC.2015.117SulfurDopedTinOxideNanoparticles:SolidStateSynthesisandPerformanceforVisible-LightDrivenPhotoeatalyticDegradationofParaquatHEZhong—BingLIUShao—You’YANGH
4、ong—YunMINZong—YiNIEXineCollegeofChemistryandMaterialsE嚼erKailiUniversity,Kaili,Gu&hou556011,China)(2CollegeofEnvirnomentalScienceandEngineering,HunanUniversity,Changsha410082,China)(3SchoolofEnvirnomentalStudies,GuangxiUniversity,Nanning530004,China)Abstract:Sulfurdopedtinoxide(
5、S-SnO2)nanoparticleswithhighvisiblelight—drivenactivitywassynthesizedbyafacilesolidstatesynthesisapproachatlowtemperatureusingsodiumdodecylbenzenesulfonate(SDBS)asatemplate.ThesampleswerecharacterizedbyXRD,XPS,SEM,UV—Vis,HR—TEM,andFIYIR.Thedopingmechanismandphotocatalyticdegradat
6、ionofparaquatundervisiblelightirradiationwereinvestigated.TheresultsshowthattheSDBShasasignificantregulatingeffectonthesurficialstructureforbothSnO2andS—SnO2preparedbysolidstatesynthesis.TheSelementissuccessfullyincorporatedintothelatticeofSnO2withS(1V)ands(v0ratherthanembedsinto
7、theintersticeofSnO2lattice.S-dopingenhancesthephotocatalyticactivityofSnO2duetothepresenceofalargenumberofhydroxylsonthesulxCaceands(v0inthelatticeofSnO2benefitingthelightabsorptionandeffectivechargeseparation,andit~llowsanorderofSnO2
8、;solidstatesynthesis;photoeatalytiedegra
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