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4510201010IronandSteelVol.45,No.10October2010周密,杨合,卜二军,薛向欣,杨泽健(,110004):,,,,(XRD)(SEM):CeO2,Y2O30.5%1.0%,72.2%74.0%:;;;;:TF524:A:0449749X(2010)10009005TheImpactofRareEarthDopantsonthePhotocatalyticPropertiesofTitaniumBaringBlastFuranceSlagZHOUMi,YANGHe,BUErjun,XUEXiangxin,YANGZejian(SchoolofMaterialsandMetallurgy,NortheasternUniversity,Shenyang110004,Liaoning,China)Abstract:Titaniumbaringblastfuranceslag(TBBFS),asaphotocatalystmaterial,itsquantumefficiencyandutilizationofsolarenergyareverylow.Becauseofthespecialelectronicstructure,therareearthelementsareofgoodsemiconductorpropertiesintheformationofoxides.Andtosomeextent,themixtureofitsmetallicoxidecanimprovethelightcatalyticpropertiesofthetitaniumbaringblastfuranceslag.Inthisstudy,titaniumbaringblastfuranceslagmixedwithrareearthoxideisusedindegradationexperimentofthemethylenebluesolutionundertheconditionoftheultravioletradiationandmanyanalyticalmethodssuchasraydiffractionexperiments(XRD),scanningelectronmicroscopy(SEM)areusedtofindouttheoptimumamountofrareearthdoped.TheresultsshowthattheoptimaldopingsoftherareearthelementCeO2,Y2O3arerespectively0.5%,1.0%,andthismomenttheirdegradationratesofmethylenebluewillrespectivelygetto72.2%,74.0%.Keywords:titaniumbaringblastfuranceslag;photocatalysis;metaldoping;rareearth;methyleneblue:(50874029);973(2007CB613504);(N090402011):(1987),,;Email:zhoumineu@163.com;:20100121,[12],TiO2,H2O,,[3],,,,1试验原料:,1~10cm,,111()Table1ChemicalcompositionofTBBFS%CaOSiO2TiO2Al2O3MgOCO2SO3Fe2O327.825.116.913.27.385.481.070.97510:1XRDFig.1XRDpatternsofPanzhihuaslagpowderatroomtemperature:CeO2()Y2O3()(MethyleneBlue,),C16H18ClN3S3H2O,22Fig.2Structuremodelofmethyleneblue(MB)2试验方法及原理,4f,+3,4fn6s26p6,4f:,5d,TiO2,ds(d0S0),,,,600!,0.4g100mL8mg/L,254nm(300W/cm2),60min,15min,,30min,,33Fig.3Schematicdiagramofexperimentdeviceandanalyzingflowchart3结果与讨论3.1CeO245,CeO20.5%,72.2%,CeO21.0%3.0%,,67.7%47.2%,20%914567X,CeO2,CeO2,CeO2CeO2,,,Ce4+/Ce3+E=1.86eV,Ce4+Ce3+,Ce3+Ce4+,:Ce4++e-∀Ce3+(Ce4+)(1)Ce3++h+∀Ce4+(Ce3+)(2)43,,,,,[4]Ce4+Ce3+CeO2,,CeO2,,Ce4+,,,,,CeO2,CeO2,,,[5],,,0.2Vw:w=(20Vs/eNd)(3):w;;0;Vs;e;Nd(3),,,CeO2,,,3.2Y2O389,Y2O3,1.0%Y2O3,740%,21.4%Y2O3,9210:,5.0%Y2O3,31.4%,20%40%,Y2O3Y2O3,:Y3+TiO2,,Y,Y3+0.093nmTi4+0.068nm,,TiO2TiOY,TiO21011,(),,Y3+,,,,,43,,,TiO2OH-,OH-,,,,,9345[6],,,,,,4结论1)2)CeO20.5%,72.2%3)Y2O31.0%,74.0%:[1].[J].,2006,31(4):1.[2],,,.[J].,1992,15(4):62.[3]FarrautoRJ,HeckRM.EnvironmentalCatalysisIntothe21stCentury[J].CatalysisToday,2000,55(12):179.[4],,,.NH4H2PO4TiO2[J].,2003,17(4):302.[5],,,.TiO2[J].,2000,26(3):287.[6].[D].:,2005.(89)1Fe2TiTiTi(300~1100K)Fig.1EquilibriumsolubilityofTiwithFe2TiandTiinFerriteTi,,TiFe2Ti,,6结论ThermoCalcFe2TiFe2Ti,:lg[Ti]=1.632+2293/T(850~1100K),lg[Ti]=0.2477+3401/T(300~800K):[1]BobnarRL.ApplicationsofTitaniumNitrideTechnologytoSteelProducts[J]Ironandsteelmaker,1994,21(4):19.[2],.Ti20CrMnTi[J],2008,29(4):45.[3].[M].:,2006.[4],.[M].2.:,2002.岳满堂94