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时间:2020-04-24
《一维亚微米多钼酸盐形貌可控合成及氧的电催化还原研究(英文)-论文.pdf》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、第26卷第6期分子催化V01.26.No.62012年12月JOURNALOFMOLECULARCATALYSIS(CHINA)Dec.2012ArticleID:1001—3555(2012)06-0529-08Morphology--controlledSynthesisof1DSubmicro--structuredPolyoxomolybdateTowardsElectr0catalyticOxygenReductionDENGZhong—hua.LVGong—xuanStateKeyLaboratoryforOxoSynthesisandSelectiveOxidatio
2、n,LanzhouInstituteofChemicalPStcs,ChineseAcademyo厂Sciences,Lanzhou730000,China)Abstract:1Dsubmicro—structuredpolyoxomolybdatesubmicro。wires,submicro—rodsandnanobehsweresynthesizedbyalteringthepHvalueandreactants.Submicro—wirescouldbeobtainedbyreacting(NH4)6Mo7O24·4H2Owithsodiumdodecylbenzenesu
3、lfonate(SDBS)atpH=6,andthatforsubmi-cro—rodsatpH=2.However,nanobehscouldbesynthesizedbyreacting(NH4)6Mo7O24。4H2OwithNaC1atpH=6.InsolutionofpH=6,polyoxomolybdateshouldgrowupsubmicro—wiresinlongmicelles.AtpH:2,notonlymoreMo30lo,butalsoshortmicellesformedbyexcessiveHcations,whichleadedtothesubmic
4、ro—rods.WithouttemplateSDBS,p01y0xomoIybdatemayexistinstablenanobelts.Cyclicvohammetryresultsindicatedthatpolymolybdatesubmicro·rodsexhibitedexcellentactivityforoxygenelectroreductioninorganicsolvent.BecausealcoholcouldreactwithHintheelectrolyte,theactivityofoxygenelectroreductionoverpolymolyb
5、datecouldbeobviouslypromotedinthepresenceofalcoho1.Keywords:P0ly0x0m0lybdate;1Dsubmicro—structured;Oxygenelectroreduction;AlcoholpromotedCLCnumber:0643.32Documentcode:Aelectrocatalystsforoxygenreductionreaction[一Directmethanolfuelcells(DMFCs)providesig-.nificantadvantages,suchashighenergydensi
6、ty,lowHere,forthefirsttime,wereportafacileroutetopollution,rapidstart-up,andcompactnessoverre—synthesize1DNaNH4Mo3O10·H2Oandobtainedsub—chargeablebatteries,andothertypesoffuelcellsformicro.wires,submicro.rods.nanobehs,andthemix—portableapplications⋯.However,theDMFCper—tureofsubmicro.wires,nano
7、behsandmieroflowersbyformanceisstillhinderedbyseveralfactors,includingtuningthepHvalue,andreactants.Moreover,the1DthehighcostofthePt-basedelectrocatalysts,thepoorsubmicro.structuredmaterialswereusedaselectrocata..kinetics0fbothanode[2]a
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