大孔炭载Ir催化剂对氨氧化的电催化性能

Iraabbbac*a210097b100191c130022MCVulcanXC-72XCIr/MCIr/XC。XEDS、XXRD、2IrIr/MCIr/XC38.7%Ir/XC。Ir/MCIr/XCIrMC。MCXC。O646A1000-0518201201-0095-05DOI10．3724/SP．J．1095．[e-mail]。、1-2。、、3。Vooys4Pt、Pd、Ir、CuAgPtIr。5PtIrCOIrPtIr。。、、6-7。XC8。9、6、10、11、1213PtPt7。。、MC14Ir/MCIr/XCIr/MCIr/XCIr/MC。11．1IrCl3≥99.9%Ir≥58%Nafion5%AldrichXC30nmCabotMC15。CHI600CHID/max-rCX291Vol．29Iss．120121CHINESEJOURNALOFAPPLIEDCHEMISTRYJan．201240kV100mACuKαVantageIVX。Jobin-YvonT64000Jobin-YvonHe-Cd325nm。1．260mgXC2h3.05mL0.02558mol/LIrCl380℃NaOHpH10～1110mL0.1586mol/LNaBH42hIr。、Cl－55℃10hIr/XCIr20%。Ir/MC。1．3SCESCE。0.145mol/LNH3·H2O0.4mol/LNaClO4。NH4OHNH3·H2ONH4OH5。164mm0.1256cm2。6#0.30.05μmAl2O3。2mg0.9mL、0.1mLNafion10min6.2μL60℃。15.924mg/cm2Ir3.185mg/cm2。N299.99%10minO2。50mV/s。30±1℃。22．11XCMCXRD。12C002C1002。2BETXCMC0.412.59cm2/g2145nm15MCXC4.3XC2.1。1XCaMCbXRDFig．1XRDpatternsofXCaandMCb2XCaMCbRamanFig．2RamanspectraofXCaandMCb2XCMC。2MC1583cm－1MCXC17。2．23Ir/XCIr/MCXRD。32θ24.7°C0022θ41°、47°、69°83°。Ir111、200、220311Ir。Scherrer18-19Ir111Ir69293Ir/XCaIr/MCbXRDFig．3XRDpatternsofIr/XCaandIr/MCbcatalystsB2θ=0．94λ/dcosθB2θλ0.1542nmdnmθ。Ir/XCIr/MCIr2.32.2nm。Antolini20Ir111Ir/XCIr/MCIr1.51.3。4Ir/XCIr/MCEDS。Ir/XCIr/MCIr17.99%18.22%IrIrCl3。4Ir/XCAIr/MCBEDSFig．4EDSspectraofIr/XCAandIr/MCBcatalysts2．35Ir/XC0.4mol/LNaClO40.145mol/LNH3·H2O+0.4mol/LNaClO45abNH3·H2ONaClO4Ir/XCFig．5Cyclicvoltammogramsof0．4mol/LNaClO4solutionwithoutaandwithb0．145mol/LNH3·H2OontheIr/XCcatalystelectrode。5Ir/XC1Ir1.54A/g0.860V。6Ir/MC0.4mol/LNaClO40.145mol/LNH3·H2O+0.4mol/LNaClO4。6Ir/MCIr2.31A/g0.856V。56Ir/XCIr/MC1.542.31A/gIr/MCIr/XC38.7%。0.8600.856V。Ir/MCIr/XC。7Ir/XCIr/MC0.145mol/LNH3·H2O+0.4mol/LNaClO40.8V。71000sIr/MCIr791Ir6abNH3·H2ONaClO4Ir/MCFig．6CyclicvoltammogramsofIr/MCcatalystelectrodein0．4mol/LNaClO4solutionwithoutaandwithb0．145mol/LNH3·H2O7NH3·H2ONaClO4Ir/XCaIr/MCb0．8VFig．7ChronoamperometriccurvesofIr/XCaandIr/MCbcatalystelectrodesin0．145mol/LNH3·H2Oand0．4mol/LNaClO4solutionat0．80V0.50A/gIr/XC0.32A/gIr/MCIr/XC。3NaClO4Ir/MCIr/XC2IrIr/MCMC、。IrMCMC。MC。1TimmerBOlthuisWvandenBergA．AmmoniaSensorsandTheirApplications-AReviewJ．SensActuatB2005107666-677．2JiXBBanksCEComptonRG．TheElectrochemicalOxidationofAmmoniaatBoron-dopedDiamondElectrodesExhibitsAnalyticallyUsefulSignalsinAqueousSolutionsJ．Analyst2005130101345-1347．3XUJianboHUAKaifengWANGYujiangetal．StudyofAmperometricAmmoniaSensorJ．JZhengzhouInstLightIndNatSci200419439-42inChinese．．J．200419439-42．4DeVooysACAKoperMTMVanSantenRAetal．SelectiveCatalyticOxidationofAmmoniaOverCopper-ceriumCompositeCatalystJ．JElectroanalChem20015062127-137．5HANYipingLUOPengCAIChengxinetal．ElectrocatalyticPerformanceofUltrafineIrCatalystforOxidationofAmmo-niaJ．ChineseJApplChem2008253361-365inChinese．．PtIrNH3J．2008253361-365．6DuHDLiBHKangFYetal．CarbonAerogelSupportedPt-RuCatalystsforUsingastheAnodeofDirectMethanolFuelCellsJ．Carbon200745429-435．7ChanKYDingJRenJWetal．SupportedMixedMetalNanoparticlesforFuelCellElectrodeJ．JMaterChem200414505-516．8ShaoYYYinGPGaoYZetal．DurabilityStudyofPt/CandPt/CNTsCatalystsunderSimulatedPEMFuelCellConditionsJ．JElectrochemSoc2006153A1093-A1097．9YangGWGaoGYZhangGYetal．EffectofaCarbonSupportContainingLargeMesoporesonthePerformanceofaPt-Ru-Ni/CCatalystforDirectMethanolFuelCellsJ．Carbon2007453036-3041．10GuoJSSunGQWangQetal．CarbonNanofibersSupportedPt-RuElectrocatalystsforDirectMethanolFuelCellsJ．8929Carbon200644152-157．11HayashiANotsuHKimijimaKetal．PreparationofPt/MesoporousCarbonMCElectrodeCatalystandItsReactivityTowardOxygenReductionJ．ElectrochemActa2008536117-6125．12LiuYCQiuXPHuangYQetal．ElectrocatalyticPerformanceandFormicAcidToleranceAbilityofMacroporeCarbonSupportedIrCatalystforOxygenReductionJ．JPowerSources2002111160-164．13ParkISParkKWChoiJHetal．ElectrocatalyticEnhancementofMethanolOxidationbyGraphiteNanofiberswithaHighLoadingofPtRuAlloyNanoparticlesJ．Carbon20074528-33．14ZhaoCRWangWKYuZBetal．Nano-CaCO3asTemplateforPreparationofDisorderedLargeMesoporousCarbonwithHierarchicalPorositiesJ．JMaterChem201020976-980．15WangZBZhaoCRShiPFetal．EffectofaCarbonSupportContainingLargeMesoporesonthePerformanceofaPt-Ru-Ni/CCatalystforDirectMethanolFuelCellsJ．JPhysChemC2010114672-677．16TangYWZhangLLWangYAetal．PreparationofACarbonSupportedPtCatalystUsingAnImprovedOrganicSolMethodandItsElectrocatalyticActivityforMethanolOxidationJ．JPowerSources2006162124-131．17HanSYunYParkKWetal．SimpleSolid-PhaseSynthesisofHollowGraphiticNanoparticlesandTheirApplicationtoDirectMethanolFuelCellElectrodesJ．AdvMater2003151922-1925．18GuoJLSheYNJieMLetal．UsingScherrerFormularCalculatingSizeofCrystallineShouldPayAttentiontoSeveralQuestionsJ．JInnerMongoliaNormalUniv2009383357-358．19WhiteJHSammellsAPerovskiteF．PerovskiteAnodeElectrocatalysisforDirectMethanolFuelCellsJ．JElectrochemSoc19931402167-2177．20AntoliniECardelliniFJ．FormationofCarbonSupportedPtRuAlloysanXRDAnalysisJ．JAlloysCompd2001315118-122．ElectrocatalyticPerformanceofIrCatalystSupportedonMacroporousCarbonforAmmoniaOxidationLILinruaCHENChongaXUBinbCAOGao