TiO2半导体光催化剂在污水处理中的研究进展

3(2051437);(2005E0007M):,1980,,:,,Tel:[phone]E2mail:[e-mail]23,,,,(,650091)TiO2TiO2,TiO2DevelopmentofTiO2PhotocatalystinPollutedWaterTreatmentJIANGHaijun,ZHANGJin,XILihe,ZHUZhongqi,LIUQingju(DepartmentofMaterialScienceandEngineering,YunnanUniversity,Kunming650091)AbstractThetechnologyofphotocatalyticoxidationinprotectingtheenvironmenthasbeenoneofthefocu2sesintheworld.TherecentdevelopmentsofTiO2photocatalystinthefieldofpollutedwatertreatmentarereviewedsystematicallyinthispaper.ImmobilizationtechnologyofTiO2photocatalystandnewtypephotocatalyticreactorareal2sosummarized.Keywordsphotocatalyst,catalyticactivity,immobilization,reactor,,,,[1]:,,,,TiO2,[26],[7],:(1)CO2H2O,;(2),H2O2;(3);(4);(5)1TiO2TiO23::TiO2,(Eg)3.2eV3.0eV,387nm413nm[8,9]TiO2,TiO2(e-),(h+),(e-)(h+)O2/H2O?OH/?O-2,,,,TiO21[2]1Fig.1Principleofphotocataticdegradationoforganicpollutants:h++OH-OHh+-H2OOH+H+e-+O2O-2O2+2H++2e-H2O2H2O2+?O-2OH+OH-+O2H2O2+e-OH+OH-H2O22?OH+?OH(?O-2)CO2+H2O+2TiO22.1,,,[10],TiO2,,,?45?2007521,TiO2,X26GX2BX23B375minCOD60%[11][12]TiO2,012%,H2O22%,pH24,120min,15mg/L10mg/L,99.6%99.8%,1210,2.2COD,[13],,TiO2[14]TiO2,TiO22g/LpH3,2.5h,(10mg/L)96%,(SDS),,[15]:TiO2,,1.5h,SDS81%,,2.3,,,[16],Sol2gelTiO2/AC,300ml,60min,pH=2.0,0185g,,92.2%[17]TiO2,,60min,80%,,2.4,,[18]TiO2,Fe3+H2O2,,2.5h99%;3h,98%2.5,HgCrPb;,,;,[19]SiO22TiO2:Cr6+80mg/L100ml017g82TiO22SiO2,3h,Cr6+99.9%Skubal[20]TiO2,Hg2+,99.9%TiO22.6,,TiO2TiO2,,,,,(Ag+Cu2+),[21][22]TiO2,,TiO2,99.2%Ire2land[23]TiO2,300400nm,103cfu/ml12L,8min3TiO23.1,,[2428]:(),,,TiO2,,[22]:3.2,3.2.1[29,30]:/TiO2,,TiO2,450/,TiO2,;TiO2[3133],,,3.2.2(),,,(1)22TiO2,TiO2,?55?TiO2/,,TiO2TiO2,,,,(2)(H2Ar),,TiO2[29],(MOCVD),(3),[34],,TiO2,[25,35]:4,,,,,,[36]:;:;:,,,,,[37]4.1(2),,,2Fig.2Schemeofintermittentflowflat2boardreactor4.2,(3)TiO2,,,[38,39],,,,[40],,,,,90%,3Fig.3Schemeofthefluidized2bedphotocatalyticreactor4.3(4),,,TiO2,,,,,[41],,UV26.93W/m2,TiO21g/L,1600L/h,20mg/L15L,1h83.6%,2h97.9%4Fig.4Flowsheetofthesolarflatplanephotoreactorsystem4.4(5),,,,,,,,,[42]?65?20075215,,TiO2,98%5Fig.5Anewtypeofopenandrevollingphotocatalyticreactor5TiO2,,,TiO2,:(1)TiO2,,TiO2;(2),:,,,TiO2,,;(3),;(4),1,,..,2000,19(1):262WeiszAD,GarciaRodenasL,etal.FTIRstudyoftheasorptionofsinglepollutantsandmixturesofpollutantson2totitaniumdioxideinwater:oxalicandsalicylicacids.CatalToday,2002,76:1033DunlopPSM,BymeJA,etal.Thephotocatalyticremovalofbacaterialpollutantsfromdrinkingwater.JPhotochemPhotobiol:Chem,2002,148(1):3554QamarM,SaquibM,etal.Photocataluticdegrationoftwoselecteddyederivatives,chromotrope2Bandamidoblack10B,inaqueoussuspensionsoftitaniumdioxide.DyesandPigments,2005,65(1):15AmatAM,ArquesA,etal.Solarphoti2catalysistoremovepapermillwastewaterpollutants.SolarEnergy,2005,79(4):3936HabibiMH,VosooghianH.Photocatalyticdegradationofsomeorganicasenvironmentalpollutantsusingtitaniumdi2oxidesudpension.JPhotochemPhotobiolA:Chem,2005,174(124):457,..,2002,21(5):3458,,..,1997,5(3):19BerkoA,BiroT,SolymosiF.FormationandmigrationoncarbonproducedinthedissociationofCOonRh/TiO2(110)2(112)mod2elcatalyst:Ascanningtunnelingmicrosco2pymicroscopystudy.JPhysChemB,2000,104(12):250610XieYB,YuanCW.Photocatalyticactivityandrecycleap2plicationoftitaniumdioxidesolforX23Bphotodegradation.JMolecularCatalysisA:Chem,2003,206(122):41911,,..,2000,17(2):7912..,2001,20(3):17413,,..,2001,(4):114,..,2004,23(1):7515,,..,2004,17(3):2716,.TiO2.,2004,35(1):3017,.TiO21,2001,1(4):43218,,..,2003,22(1):6719,.Si2TiO2.,2003,28(3):4720SkubalLR,MeshkovNK.Reductionandremovalofmer2curyfromwaterusingarginine2modifiedTiO2.JPhotochemPhotobiolA:Chem,2002,148:21121,,.?.,2004,18(2):2222,..,2004,36(4):5423IrelandJC,KlostermanP,RiceEW,etal.Inactivtionofes2cherichaicolibytitaniumoxidephotocatalyticoxidtion.ApplEnvironMicrobiol,1993,59(8):166824.TiO2.,2001,23(2):7425,,.TiO2.,2003,26(3):8726MaY,QiuJB.PhotocatalyticactivityofTiO2filmsgrownondifferentsubstrates.Chemosphere,2001,44(5):108727,,.TiO2.,2003,17():82(63)?75?TiO2/,77.3nm,149nm,2111nm,2812nm,H2800(4),10,,10nm,,,4ZrO2Fig.4TEMofZrO2sol5ZrO2Fig.5AFM2Dand3DimagesofZrO2thinfilm,,10nmZrO2,150,(PSIAcorporationXE2100advancedscanningprobemicroscope),,,4nm(5)42,2,,,HORIBALB25501,10nm,1,,,020,,4nm,,1,,,.2.,2004,22(3):3652,,..,2004,33(11):14933,,..,2005,23(5):364..(),2005,20(2):45(57)28,.TiO2.,2001,25(5):3129,,.TiO2.,2005,(9):1930,,.TiO2.,2004,21(4):24831,,.TiO2.,2000,2(9):832,,.TiO2.,1999,20(3):36833,,..,2001,1(1):9934,..,1998,24(3):29135,,..,2002,53(8):77536..,2002,(1):1137,,..,2000,20(6):54038BedfordJN,etal.Performanceofnonconcentratingsolarphotocatalyticoxidationreactors,PartII:shallowpondcon2figuration.JSolarEneryEng,1994,116:839,,..,2002,(6):4740,,..,2003,4(1):7341,,..,1999,19(2):14242..,2005,26(3):109?36?/