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1、------------------------------------------------------------------------------------------------Er摻雜鈦酸鍶的制備及可見光催化性能研究第43卷第8期2014年8月人工晶體學報JOURNALOFSYNTHETICCRYSTALSVol.43No.8August,2014許靜,王靜,魏月琳,鄭宣清,陶鑫靈,范樂慶,黃妙良,黃昀昉孫志賢,(華僑大學化工學院,環(huán)境友好功能材料教育部工程研究中心,廈門361021)3+摘要:通過水熱法制備了Er摻雜的SrTiO3系列光催化劑
2、,對樣品進行了X射線衍射、掃描電鏡、紫外可見吸收光3+Er譜和比表面積分析,并以染料降解考察了樣品的光催化活性。研究表明,的適量摻雜抑制了SrTiO3粒徑生長,3+SrTiO3的光催化活性優(yōu)于純增加了SrTiO3對太陽光的利用率。在紫外光和可見光輻照下,水熱法制備Er-SrTiO3的光催化活性達到最大,SrTiO3和高溫固相反應制備的Er3+-SrTiO3。當摻雜量為1.5%時,且在可見光輻照下的光催化活性優(yōu)于TiO2(P25)光催化劑。關(guān)鍵詞:SrTiO3;水熱法;光催化中圖分類號:O643文獻標識碼:A985X(2014)08-1954-06文章編號:10
3、00-——————————————————————————————————————------------------------------------------------------------------------------------------------PreparationandVisibleLightPhotocatalyticPropertiesofErDopedSrTiO3XUJing,WANGJing,WEIYue-lin,SUNZhi-xian,ZHENGXuan-qing,TAOXin-ling,F(xiàn)ANLe-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