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时间:2018-08-02
《er掺杂钛酸锶的制备及可见光催化性能研究》由会员上传分享,免费在线阅读,更多相关内容在教育资源-天天文库。
1、------------------------------------------------------------------------------------------------Er掺杂钛酸锶的制备及可见光催化性能研究第43卷第8期2014年8月人工晶体学报JOURNALOFSYNTHETICCRYSTALSVol.43No.8August,2014许静,王静,魏月琳,郑宣清,陶鑫灵,范乐庆,黄妙良,黄昀昉孙志贤,(华侨大学化工学院,环境友好功能材料教育部工程研究中心,厦门361021)3+摘要:通过水热法制备了Er掺杂的SrTiO3系列光催化剂
2、,对样品进行了X射线衍射、扫描电镜、紫外可见吸收光3+Er谱和比表面积分析,并以染料降解考察了样品的光催化活性。研究表明,的适量掺杂抑制了SrTiO3粒径生长,3+SrTiO3的光催化活性优于纯增加了SrTiO3对太阳光的利用率。在紫外光和可见光辐照下,水热法制备Er-SrTiO3的光催化活性达到最大,SrTiO3和高温固相反应制备的Er3+-SrTiO3。当掺杂量为1.5%时,且在可见光辐照下的光催化活性优于TiO2(P25)光催化剂。关键词:SrTiO3;水热法;光催化中图分类号:O643文献标识码:A985X(2014)08-1954-06文章编号:10
3、00-——————————————————————————————————————------------------------------------------------------------------------------------------------PreparationandVisibleLightPhotocatalyticPropertiesofErDopedSrTiO3XUJing,WANGJing,WEIYue-lin,SUNZhi-xian,ZHENGXuan-qing,TAOXin-ling,FANLe-qing,HUAN
4、GMiao-liang,HUANGYun-fang(EngineeringResearchCenterofEnvironment-FriendlyFunctionalMaterials,MinistryofEducation,CollegeofChemicalEngineering,HuaqiaoUniversity,Xiamen361021,China)(Received7March2014,accepted1May2014)Abstract:AseriesofEr3+dopedSrTiO3photocatalystsweresynthesizedbyhyd
5、rothermalmethod.ThesampleswerecharacterizedbypowderX-raydiffractionpattern,scanningelectronmicroscope,UV-Visdiffusereflectancespectrumandspecificsurfaceareameasurements.Thephotocatalyticactivityofsampleswasstudiedbyphotocatalyticdecompositionofdyesolution.TheresultsshowthatEr3+dopin
6、gcouldrestrainthegrowthofSrTiO3grainsize,enhancetheutilizationofsolarenergy.UnderthedopedSrTiO3washigherthanirradiationofultravioletandvisiblelight,thephotocatalyticactivityofEr3+-thatofpureSrTiO3andthosepreparedbyhightemperaturesolidstatereactio—————————————————————————————————————
7、—------------------------------------------------------------------------------------------------nmethod.ThebestdopedSrTiO3photocatalyticperformancewasattainedforthesampleswith1.5%(molefraction)ofEr3+-content.Especially,Er-dopedSrTiO3showhigheractivitythanTiO2(P25)indecompositionofo
8、rganicdyesundervisi
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