研究生英语文献汇报PPT.ppt
21页1、1 PaperReview 李俊乾化学工程 专 14102932 SynthesisofbimetallicPt Pdnano tubesandtheirenhancedcatalyticactivityinmethanolelectro oxidation 双金属铂 钯纳米管的合成和其在甲醇电氧化增强的催化活性 2 Literaturesource 3 Contents Introduction 1 2 Experimentalsection 1 Conclusions 2 3 4 Resultsanddiscussion 4 1 Introduction Theshortageoftraditionalenergyresourcesandseriousenvironmentalpollutionduetocombustionemissionshaveresultedinanumberofscientificstudiesonthedevelopmentofsustainableandcleanenergy includingfuelcells 5 1 Introduction Me
2、thanoloxidationinadirectmethanolfuelcell DMFC cangenerateelectrochemicalenergy DMFC Sworkingprinciple Anode CH3OH H2O CO2 6H 6e 0 0 046VCathode 3 2O2 6H 6e 3H2O 0 1 229V CH3OH 3 2O2 CO2 2H2O E0 1 183V Thisoxidationusuallyneedsacatalysttolowerthereactionbarriertomaketheprocessefficient Sofar platinum Pt isthemostefficientcatalystinthefield ScarcityofPt whichcausesitshighcost inevitablyimpedestheactivedevelopmentofbothscientificresearchandpracticalutilization Theutilizationofsingle componentPtinDM
3、FCssuffersfromseriouscarbonmonoxide CO poisoning CO oneofthemainintermediatemolecules caneasilystainPtatoms whichdeterioratestheircatalyticactivity 6 Thearticlethought Inthisstudy weachievedhighercatalyticactivityformethanoloxidationusingtheperpendicularbimetallicPt PdNTarrayasacatalyst TheinvestigationofthecatalyticpropertiesofbimetallicmaterialspavesawaytosubstitutingexpensivePtwithcost competitivematerialsinthefuture 7 Experimentalsection 2 8 2 Experimentalsection 5mMPdCl2 5mMH2PtCl6 40mMHCl
4、usedfordeposition ThelengthsoftheNTscanbecontrolledbyusing0 3to2C AAO avertically alignedbimetallicPt Pdnanotubearray Scheme1Schematicdrawingoftheiondistributioninaporousaluminanano template DashedlinesshowtheelectricaldoublelayeroftheclassicalGouy Chapman Stern smodelbetween b diffusionlayerand c bulklayerregionsinananochannel Region a depictsacompactlayer 9 2 3 Resultsanddiscussion 10 3 Resultsanddiscussion TheaverageouterdiameterandwallthicknessofthePt PdNTsweremeasuredas217 39nm and37 12nm r
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