研究生英语文献汇报PPT.ppt

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1、1PaperReview李俊乾化学工程（专）14102932SynthesisofbimetallicPt/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）2Literaturesource3ContentsIntroduction12Experimentalsection1Conclusions234Resultsanddiscussion41.IntroductionThesho

2、rtageoftraditionalenergyresourcesandseriousenvironmentalpollutionduetocombustionemissionshaveresultedinanumberofscientificstudiesonthedevelopmentofsustainableandcleanenergy,includingfuelcells.51.IntroductionMethanoloxidationinadirectmethanolfuelcell(DMFC)cangenerateelec

3、trochemicalenergy.DMFC’Sworkingprinciple:CathodePolymerAnodemembraneCO2H2OH2OCO2H2OO2H+：CH3OHe-e-Loadinge-CathodecatalystAnodecatalystWasteheatAnode：CH3OH+H2OCO2+6H++6e-φ0=0.046VCathode：3/2O2+6H++6e-3H2Oφ0=1.229VCH3OH+3/2O2CO2+2H2OE0=1.183VThisoxidationusuallyneedsac

4、atalysttolowerthereactionbarriertomaketheprocessefficient.Sofar,platinum(Pt)isthemostefficientcatalystinthefield.ScarcityofPt,whichcausesitshighcost,inevitablyimpedestheactivedevelopmentofbothscientificresearchandpracticalutilization.Theutilizationofsingle-componentPtin

5、DMFCssuffersfromseriouscarbonmonoxide(CO)poisoning.CO,oneofthemainintermediatemolecules,caneasilystainPtatoms,whichdeterioratestheircatalyticactivity.6Thearticlethought：Inthisstudy,weachievedhighercatalyticactivityformethanoloxidationusingtheperpendicularbimetallicPt/Pd

6、NTarrayasacatalyst.TheinvestigationofthecatalyticpropertiesofbimetallicmaterialspavesawaytosubstitutingexpensivePtwithcost-competitivematerialsinthefuture.7Experimentalsection282.Experimentalsection5mMPdCl25mMH2PtCl640mMHClusedfordepositionThelengthsoftheNTscanbecontrol

7、ledbyusing0.3to2C.AAOavertically-alignedbimetallicPt/PdnanotubearrayScheme1Schematicdrawingoftheiondistributioninaporousaluminanano-template.DashedlinesshowtheelectricaldoublelayeroftheclassicalGouy–Chapman–Stern'smodelbetween(b)diffusionlayerand(c)bulklayerregionsinana

8、nochannel.Region(a)depictsacompactlayer.923Resultsanddiscussion103.ResultsanddiscussionTheaverageouterdiameter