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

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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