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dc.contributor.author Ramulifho, T
dc.contributor.author Ozoemena, KI
dc.contributor.author Modibedi, RM
dc.contributor.author Jafta, CJ
dc.contributor.author Mathe, MK
dc.date.accessioned 2012-03-28T11:19:44Z
dc.date.available 2012-03-28T11:19:44Z
dc.date.issued 2012-01
dc.identifier.citation Ramulifho, T, Ozoemena, KI, Modibedi, RM, Jafta, CJ and Mathe, MK. 2012. Fast microwave-assisted solvothermal synthesis of metal nanoparticles (Pd, Ni, Sn) supported on sulfonated MWCNTs: Pd-based bimetallic catalysts for ethanol oxidation in alkaline medium. Electrochimica Acta, vol. 59, pp. 310-320 en_US
dc.identifier.issn 0013-4686
dc.identifier.uri http://www.sciencedirect.com/science/article/pii/S0013468611016239
dc.identifier.uri http://hdl.handle.net/10204/5693
dc.description Copyright: 2011 Elsevier. This is a post-print version of the work. The definitive version is published in Electrochimica Acta, vol. 59, pp 310-320 en_US
dc.description.abstract The preparation of metal nanoparticles (Pd, Ni, Sn) supported on sulfonated multi-walled carbon nanotubes (SF-MWCNTs) using a very rapid microwave-assisted solvothermal strategy has been described. Electrocatalytic behaviour of the SF-MWCNT-Pd and its "mixed" bimetallic electrocatalysts (i.e., SF-MWCNT-PdSn mix and SF-MWCNT-PdNi) towards ethanol oxidation in alkaline medium was investigated. The result shows that the mixed Pd-based catalysts (obtained by simple ultrasonic-mixing of the individual MWCNT-metal nanocomposites) gave better electrocatalytic activity than their alloy nanoparticles (obtained by co-reduction of metal salts) or Pd alone. The SF-MWCNT platform gave better electrocatalytic performance compared to the unsulfonated and commercial Vulcan carbons. Detailed electrochemical studies (involving cyclic voltammetry, chronoamperometry, chronopotentiometry, and impedance spectroscopy) prove that the mix electrocatalytic oxidation of ethanol at the platform is more stable, ours at lower potential, gives lower Tafel slopes, with faster charge-transfer kinetics compared to its SF-MWCNT-PdSn mix SF-MWCNT-PdNi counterpart. Also, result revealed that SF-MWCNT-PdNi is more tolerant to CO poisoning than the SF-MWCNT-PdSn. The results provide some important insights into the electrochemical response of microwave-synthesised Pd-based bimetallic catalysts for potential application in direct ethanol alkaline fuel cell technology. en_US
dc.language.iso en en_US
dc.publisher Elsevier en_US
dc.relation.ispartofseries Workflow;8596
dc.subject Microwave synthesis en_US
dc.subject Ethanol oxidation en_US
dc.subject Sulfonated carbon nanotubes en_US
dc.subject Pd–M nanoparticle catalysts en_US
dc.subject Voltammetry en_US
dc.title Fast microwave-assisted solvothermal synthesis of metal nanoparticles (Pd, Ni, Sn) supported on sulfonated MWCNTs: Pd-based bimetallic catalysts for ethanol oxidation in alkaline medium en_US
dc.type Article en_US


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