Understanding The Influence Of The Biomass-derived Alcohols On The Activity And Stability Of Pt Nanoparticles Supported On Graphene Nanoribbons

dc.creatorTeles
dc.creatorRodrigo; Arenillas
dc.creatorAna; da Silva
dc.creatorGabriel C.; Fernandez
dc.creatorPablo S.; Cardoso
dc.creatorEduardo S. F.; Maia
dc.creatorGilberto; Martins
dc.creatorCaue A.
dc.date2017
dc.datemar
dc.date2017-11-13T13:25:02Z
dc.date2017-11-13T13:25:02Z
dc.date.accessioned2018-03-29T05:57:32Z
dc.date.available2018-03-29T05:57:32Z
dc.identifierElectrocatalysis. Springer, v. 8, p. 151 - 163, 2017.
dc.identifier1868-2529
dc.identifier1868-5994
dc.identifierWOS:000399162500008
dc.identifier10.1007/s12678-016-0349-3
dc.identifierhttps://link.springer.com/article/10.1007/s12678-016-0349-3
dc.identifierhttp://repositorio.unicamp.br/jspui/handle/REPOSIP/328433
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1365458
dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.descriptionCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.descriptionWe produced Pt/GNRs by a one-step synthesis procedure and evaluated their electroactivity and stability towards glycerol electrooxidation reaction (GEOR) for the first time. We compared the electrocatalytic performance of GEOR with methanol and ethanol electrooxidation on Pt/GNRs at identical experimental conditions. The activities and stabilities for the electrooxidation of these biomass-derived alcohols on Pt/ GNRs were compared to commercial Pt/C. The synthesis of the Pt/GNRs was confirmed by transmission electron microscopy, x-ray diffractometry, ultraviolet spectrophotometry, and Raman spectroscopy. We found that the activities of Pt/GNRs for these reactions are comparable to Pt/C, with improvement in terms of current density for methanol electrooxidation. Comparing potentiostatic measurements, we found that glycerol produces lower pseudo-stationary current densities than ethanol and methanol on both catalysts, with greatest values found for methanol electrooxidation on Pt/C. Otherwise, the GNRs remarkably enhance the stability of the catalyst for all the reactions, by increasing the stability of the current density during successive potential cycles, and by preventing the loss of electrochemically active surface area by avoiding carbon corrosion and Pt detachment. Moreover, we showed that the stability of the NPs depends on the biomass-derived alcohol used. The solution containing methanol reveals itself the most aggressive electrochemical environment to the catalyst, impacting in the decrease of surface area, while glycerol is less aggressive. Hence, the different products formed at the interface electrode/solution might lead to a different electrochemical environment, which plays an important role on the stability of the catalysts.
dc.description8
dc.description2
dc.description151
dc.description163
dc.descriptionCNPq [454516/2014-2]
dc.descriptionFUNDECT [026/2015]
dc.descriptionFAPESP [2016/01365-0]
dc.descriptionCAPES
dc.descriptionFINEP
dc.descriptionFAPESP
dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.descriptionCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.languageEnglish
dc.publisherSpringer
dc.publisherNew York
dc.relationElectrocatalysis
dc.rightsfechado
dc.sourceWOS
dc.subjectPt-modified Nanoribbons
dc.subjectGlycerol Dlectrooxidation
dc.subjectEthanol Electrooxidation
dc.subjectMethanol Electrooxidation
dc.subjectElectrochemical Stability
dc.titleUnderstanding The Influence Of The Biomass-derived Alcohols On The Activity And Stability Of Pt Nanoparticles Supported On Graphene Nanoribbons
dc.typeArtículos de revistas


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