TiO2光催化性能及在水处理中的应用

©1994-2010ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.[1]1,,,(VB)(CB),(Eg),(e-),(h+),,,,,,OH-H2OOH,OH,CO2H2O,TiO2(,226007):TiO2,,TiO2:(TiO2);;:TQ314.24+2:A:1671-5314(2005)01-0028-04ThePropertyofTitaniumDioxidePhotocatalystandItsApplicationtotheWaterTreatmentWANGChun-mei(SchoolofChemistryandChemicalEngineering,NantongUniversity,Nantong226007,China)Abstract:Heterogeneousphotocatalysishasnowbecomeoneofthepopularresearchsubjectsinthefieldofenvironmentalprotec2tion.InthispaperthemechanismofTiO2photocatalyticoxidationisintroduced,andtheeffectsofthefactorssuchascatalyst,illuminantandconcentrationoforganicmattersonTiO2photocatalyticoxidationareanalyzed.TheapplicationofTiO2tothewa2tertreatmentissummarized.Keywords:titaniumdioxide(TiO2);photocatalysis;watertreatmentVol.4No.1Mar.2005()JournalofNantongUniversity(NaturalScience)4120053:(1967-),,,,,©1994-2010ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.[2-4]:TiO2+hvh++e-+TiO2h++e-EH2OH++OH-h++OH-HOh++H2O+O2-HO+H++O2-h++H2OHO+H+e-+O2O2-O2-+H+HO22HO2O2+H2O2H2O2+O2-HO+OH-+O2H2O2+hv2HOOrgan+HO+O2CO2+H2O+Mn++ne-MBredowJugSINDO1,TiO2,:,TiO2,,-OOH,(1.6eV),,TiO2OHTiO2OH[5],,2TiO2[2,6]2.12.1.1,TiO2,e-h+,TiO2,,,,TiO22.1.2,,,,,,,,,TiO2,,2.1.3,(10100nm),,,,,,,,,,,,;,,TiO2,TiO2,,,2.1.4TiO22.1.5TiO2,TiO2,,,,2.1.6,,©1994-2010ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.()2.2TiO2,,,,250400nm,Bahanemann,,610-5EinsteinL-1S-1,,,2.3Langmuir-Hin2shelwood:r=kKC/(1+KC),r;C;K;k,:r=kKC=KC,,,;,,2.4pHpHpH[7]pHBahnemannpH,,110-6EinsteinL-1s-1,pH;110-8EinsteinL-1s-1,pH,:210-8EinsteinL-1s-1,pH8,pH3.8,pH,2.5,,,,,O2H2O22.6AbdullahTiO2CO2:;20%70%Black,500mg/LHCO-31512,HCO-3OH:HCO-3+OHCO32-+H2O,,2.7,,10kJ/mol13kJ/mol,,Okamoto,TiO2Bahnemann,,OH:2OHH2O2,,2.8,OH-EDTA,TiO2(CoTSP),,CoTSPTiO2,O2-,3TiO2[8]3.13.1.1,,,©1994-2010ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.[9],,TiO2,PO43-,TOC70%90%,CMC-NaTiO2,50%,,,3.1.3CO2,,,Hidaka,,Pelizzetti,,,3.1.4,,,,2080,PrudenOllisTiO2,,,4-[10-11]3.1.5,,,TiO2,,,TiO2TiO2TiO2,TiO2,,,,TiO2,TiO2,Heller100mTiO2,TiO2,3.2,TiO2Miyaka1977TiO2Cr2O72-Cr3+ZnO/TiO2,TiO2Cr(VI),Cr(VI),Cr(VI)FrankTiO2CN-OCN-CO2N2NO3-SerponeAu(CN)4-Au,CN-NH3CO2,,,,4TiO2,,,,,,,,,,:TiO2(42)©1994-2010ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.()/min/N50W100W550500450400350300905101520,,,,:[1],.TiO2[J].,2000,20(12):1-5.[2],.TiO2[J].,2003,126(6):32-35.[3],,.[J].,2004,30(2):9-11.[4]DidierRobert,AntoinePiscopo,Jean-VictorWeber.Firstapproachoftheselectivetreatmentofwaterbyheterogeneousphotocatalysis[J].EnvironmentalChemistryLetters,2004,2(1):5-8.[5],.[M].:,2001.[6],,.[M].:,2002.[7],,.TiO2[J].(),2003,25(2):31-34.[8]RobertD.Industrialandenvironmentalapplicationsofphotocatalysis[J].IntJPhotoenergy,2003,5:43-197.[9]Benoit-MarquieF,MontetyCde,GilardV,etc.Dichlorvosdegradationstudiedby31P-NMR[J].EnvironmentalChemistryLetters,2004,2(2):93-97.[10]GoswamiDY.Areviewofengineeringdevelopmentsofaqueousphasesolarphotocatalyticdegradationanddisinfectionprocess[J].JournalofSolarEnergyEngineering,1997,119(3):101-107.[11]Kuy,LeuRM,LeeKC.Decompsitionof2-Choropheno1inaqueousso1utionbyUVirradiationwiththepresenceoftitaniumdioxide[J].WaterResearch,1996,30(11):2569-2578.(31),[5]3(1),(2),(3),:[1],.[M].:,2003.[2],.[J].,2003,(6):9-10.[3].[J].,1996,(6):60-65.[4].[J].,1995,(9):54-55.[5],.[J].,2003,(11):1-3.50W100W500450400350300/N051015208/min