碳纳米管催化电化学氧化甲酸.pdf

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1、2015年11月化学研究570第26卷第6期CHEMICALRESEARCHhttp：／／hxya．cbpt．cnki．netEffectofgrapheneandcarbonnanotubessupportedAu。-Pdnanoparticlesforelectr0catalyticoxidationofformicacidGAOLi：LVXiaoyu，YANGHaitang，YANGJinghe，MAOLiqun(EngineeringCenterforCleanChemicalProcessandTechnology，CollegeofChemistr

2、yandChemicalEngineering，HenanUniversity，Kaifeng475004，Henan，China)Abstract：GrapheneandcarbonnanotubessupportedAu～Pdnanoparticlesaresynthesizedbyachemicalreductionmethod．TheparticlesizeofgraphenesupportedAu—Pdnanoparticles(Au—Pd／G)ismuchsmallerthanthatofcarbonnanotubessupportedAu。‘Pd

3、nanoparticles(Au‘_Pd／CNTs)．ThereisarelativelyhighdegreeofnanoparticlesdispersiononAu-Pd／G．TheAu—Pd／Gcatalystshowsahigherelectr0catalyticactivityfortheformicacidelectrooxidationcomparedtotheAu—Pd／CNTscatalystindicatingthesubstrategraphenecanobviouslyenhancethecata·—lyticactivityofAu—

4、Pdnanoparticles．In0．1mol／LH2SO4solution，themodifiedelectrodeex—hibitedgoodelectrocatalyticactivityontheoxidationofformicacid，andtheelectrodereactionofformicacidwasadiffusioncontrolprocess．Keywords：Au—Pdnanopartieles；carbonnanotubes；graphene；formicacidoxidationCLCnumber：O627．12Docume

5、ntcode：AArticleID11008—101](2O15)O6一O57O一05Au-Pd／石墨烯和Au-Pd／碳纳米管催化电化学氧化甲酸高丽，吕逍雨，杨海堂，杨敬贺，毛立群(河南大学化学化工学院，化工与清洁技术工程中心，河南开封475004)摘要：利用化学还原法合成了石墨烯和碳纳米管负载的Au-Pd纳米粒子．石墨烯负载的Au—Pd纳米粒子(Au—Pd／G)的粒径远小于碳纳米管负载的Au—Pd纳米粒子(Au-Pd／CNTs)的粒径，且Au—Pd纳米粒子在复合材料上分布均匀．与碳纳米管负载的Au-Pd纳米粒子催化剂相比，石墨烯负载的Au—Pd催化剂对甲酸的

6、催化显示出更好的电催化活性，结果表明作为Au—Pd纳米粒子的基底，石墨烯可以明显提高Au—Pd纳米粒子的电催化活性．在0．1mol／LHzSO中，该纳米修饰电极对甲酸有良好的电催化作用，甲酸在电极上的氧化动力学过程为扩散控制过程．关键词：金一钯纳米粒子；碳纳米管；石墨烯；甲酸氧化Asakindofpromisingpowersource，directtureelectro—oxidationofformicacid[．However，formicacidfuelcell(DFAFC)offersawidepoten—Pdcatalystloseseasilya

7、largeamountofitsactivi-tialapplication．Inrecentyears，PdhasbeentyowingtotheoxidationofPdsurfacesandtheshowntobeagoodcatalystforthelowtempera—poisoningadsorptionofCOd。speciesr2]．InordertoimprovetheactivityandstabilityofPdcatalyst，Receiveddate12015—08—11．variousPd—basedcatalystshavebee

8、ndevelopedFoundatio