摻雜氧化鈦納米線陣列制備工藝優(yōu)化及其可見光催化性能.pdf

1、天津大學碩士學位論文摻雜氧化鈦納米線陣列制備工藝優(yōu)化及其可見光催化性能姓名：張念星申請學位級別：碩士專業(yè)：材料學指導教師：徐明霞20080501ABSTRACTInthispaper，thepreparationprocessofporousanodicalumina(PAA)templateandsol—electrophoresisprocesswereoptimizedontheprinciplethatthevisible—li

2、ghtphotocatalyticactivityoftitania(Ti02)nanowirearraysdidn’tdecline11leeffectsofmetalionCO—doping，semiconductordopingsemiconductorandmetalionCOdopingOilthephotocatalyticactivityofTi02nanowirearraysweresystematicallystudi

3、edAccordingtothecurrentproblemssuchasthesolweusetoprepareTi02nanowireswassynthesizedbyte仃abutyltitanatecostlyandthesolitselfhasnovisible—lightphotocatalyticactivity，theinexpensivematerialinorganictitanylsulfate(TiOSOg)wa

4、susedasrawmaterialtosynthesizerefluxedsolfRS)TheRSsolwasthenusedtoprepareTi02nanowirearraysbysolelectrophoresismethodThephotocatalyticactivityoftheaspreparedTi02nanowirearrayswassubsequentlystudiedTheporesizeofthePAAtemp

5、latepreparedrespectivelybytheformerprocessandthenewprocess(anodizationprocessI：lh，anodizationprocessⅡ：4hporeenlargingprocess：45min)wasidenticalThemorphologyandvisible—lightphotocatalyticactivityofthenanowirearraysaresimi

6、lartooWhenthes01electrophoresistimewascontrolledbetween20min25minthenanowwesintheporesofthePAAtemplatecouldbepreparedlongenoughandalsotheTi02filmwouldn’tbeformedonthesurfaceofPAAtemplate，sothepolishingprocesswhichisdi硒cu

7、lttocontrolwasavoidedComparedwithmetalionmonodopedTi02theCOdopedTi02hadhighervisiblelightphotocatalyticactivitywithfurtherredshiftedofUVvisabsorptionspectrumandnarrowedofbandgapThelightutilizationefficiencyandphotoquantu

8、mefficiencyweregreatlyimprovedbecauseofthesynergisticeffectofthedifferentdopedmetalionsButthesynergisticeffectdependsonthedopedmetalionsIncoupledsemiconductorInVOdTi02，thechargecarrierrecombinationwaseffectivelyinhibited

9、becauseoftheinterlacedenergylevelSothephotocatalyticactivitywasgreatlyimprovedHowever，thephotocatalyticactivityofInV04andmetalioncodopedTi02(InVOdM／Ti02)nanowkearrayswasnobetterthanthatofInV04廠ri02TheRSsolpreparedbyTiOS0