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20088:1003-1545(2008)04-0020-04,,,(,250031):2008-02-02:,,1982,,,:,TiO2,XRD,SEM,PL,UV-Vis:TiO2,,;;,TiO2,TiO2,:TiO2;;;:O643,TP212:A,,,TiO2,-(sol-ge1),,,,TiO2TiO2TiO2,TiO2,11.1(37%),,;NaOH,,;,CP,;TiO2,,1.2NaOH10mol/dm360ml,TiO20.5g3ml,4h,,150180,3050h,,,,70,TiO21.3FEIQuanta200(FEICompany)1.4XRDX’pentPro(PanalyfiealCompany)XRD1.5LambdaBIO40(SPR-920D)1.620mg/L,,,TiO2TiO210g/L,02234:,0.5h22.1TiO21,212,,,-1,,;,,1TiO22TiO22.2XRD,TiO2,(6002h),XRD33,6002h227.57,36.15,39.25,41136,44.10,54.41,56.65,62.86,64123,69.07,69.82,TiO2,TiO2,,,225.39,37.92,48.18,53.91,55.12,62.66,,4,TiO23TiO2XRD4TiO2XRD2.3,5,TiO2380nm,380200nm,TiO2,TiO2TiO2TiO2,TiO2Ti3d,O2p,TiO23.2eV,1220088387nm[1]TiO2TiO25b)TiO2,365nm,TiO2560nmPL,,540nm,[2]560nmPL[3](),2.4TiO2,TiO2TiO2,,6,600800nm0.4,3,1.156a)560600nm,,,3:(1),TiO2(3.894gcm-3)(4.250gcm-3),(3.3eV)(3.1eV)TiO2,,(2)TiO222234:[4],,H2O,,TiO2[57]TiO2,,,,,,--,TiO2,,-TiO2(3)TiO2TiO2,SalvadorH2OH2O2JesperNerlovTiO2,,[89]3(1)TiO2,,;(2)TiO2,;(3)TiO2,,:[1].[M].:,1991.122.[2],,,.TiO2[J].,1999,30(3):242248.[3],,.TiO2[J].,2001,46(2):265273.[4].[J].,1998,3:124.[5]ChenYongmei,JinHaiyan,LiTiejin,etal.StudyonphotoelectricpropertationofaTiO2nanoparticle[J].JVacSciTechnol:B,1997,15(4):14421444.[6],,,.[J].,1998,19(3):229233.[7],.[J].,1997,(1):2024.[8]MoraSeroI,VillarrealTL,SalvadorP,etal.Pho2toelectrochemicalbehaviorofnanostructuredTiO2thin-filmelectrodesincontactwithaqueouselectrolytescontainingdissolvedpollutants:Amodelfordistin2guishingbetweendirectandindirectinterfacialholetransferfromphotocurrentmeasure[J].PhysicalChemistry:B,2005,109(8):33803371.[9]NerlovJ,GeQingfeng,MoverPJ.Resonantphotoe2missionfromTiO2(110)surface:implicationsonsur2facebondingandhybridization[J].SurfaceScience,1996,348:2838.ResearchonPreparationandOpticalPerformanceofTiO2NanowiresZHUTao,LIUAi2yun,ZHANGJian2qin,DUHua2tai(The53rdResearchInstituteofChinaNorthIndustriesGroupCorporation,Jinan250031,China)Abstract:Inthispaper,TiO2nanowireswerepreparedbyhydrothermalreactionandthemicrostructure,morphologyandproper2tiesofnanowiresischaracterizedbyXRD,SEM,PLandUV2Vis.TheresultsshowedthatnanowireswereanataseTiO2withdi2ameteraboutseveralnanometerandlengthuptoseveralmicrometers.UV2VisabsorptionandPLexperimentsbothshowblueshiftphenomena.PhotocatalysispropertyofTiO2nanowiresisalsoinvestigated.TheresultsuggeststhattheTiO2nanowireshavehighspecificsurfaceareaandmayplayanimportantroleincatalysisandabsorbabilityapplication.Keywords:Nano2titania;Hydrothermaltreatment;Opticalperformance;Photocatalyticdegradation(:)32