Methanol Electrooxidation on Nickel Nanoparticles Decorating Graphite Flakes Surface

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dc.contributor.authorGarcia-Basabe Y.
dc.contributor.authorDe Souza Dos Reis R.G.C.
dc.contributor.authorda Cunha R.O.R.R.
dc.contributor.authorLarrude D.G.
dc.contributor.authorSossmeier K.D.
dc.contributor.authorSalgado J.R.C.
dc.date.accessioned2024-03-12T23:48:05Z
dc.date.available2024-03-12T23:48:05Z
dc.date.issued2020
dc.description.abstract© 2019, Springer Science+Business Media, LLC, part of Springer Nature.In the present work, a simple approach was proposed to produce nanocomposites of nickel nanoparticles decorating graphite flake surface (Ni-NP/graphite) from a ball milling method for methanol electrooxidation reaction. Nickel nanoparticles (Ni-NPs) were obtained after milling for 40 h at 400 rpm. The nanocomposites were prepared blending Ni-NPs and graphite flakes and milling at different ball rotation speeds (100, 200, 300, and 400 rpm). Good agreement between scanning transmission electron microscopy and X-ray diffraction results was found, reporting average particle diameter size of 4.9 nm and average crystallite size of 5.5 nm for Ni-NPs. The methanol electrocatalytic activity and stability of Ni-NPs/graphite nanocomposites were evaluated using cyclic voltammetry and chronoamperometry techniques. The possible methanol electrooxidation mechanism in Ni-NP/graphite nanocomposites was established from deconvolution of the anodic parts of voltammetric curves. The more efficient electrocatalytic activity and stability was found for Ni-NPs/graphite nanocomposite prepared using lower rotation speed (100 rpm). This behavior is associated to the loss of graphite crystallinity and consequently decreasing of its electronic conductivity with the increase of the ball milling energy which is directly related to the rotation speed during decoration procedure. [Figure not available: see fulltext.].
dc.description.firstpage259
dc.description.issuenumber3
dc.description.lastpage267
dc.description.volume11
dc.identifier.doi10.1007/s12678-019-00578-7
dc.identifier.issn1868-5994
dc.identifier.urihttps://dspace.mackenzie.br/handle/10899/34986
dc.relation.ispartofElectrocatalysis
dc.rightsAcesso Restrito
dc.subject.otherlanguageBall milling
dc.subject.otherlanguageMethanol electrooxidation
dc.subject.otherlanguageMicrostructural parameters
dc.subject.otherlanguageNanocomposite
dc.subject.otherlanguageNickel nanoparticle
dc.subject.otherlanguageSurface decoration
dc.titleMethanol Electrooxidation on Nickel Nanoparticles Decorating Graphite Flakes Surface
dc.typeArtigo
local.scopus.citations5
local.scopus.eid2-s2.0-85078608053
local.scopus.updated2024-05-01
local.scopus.urlhttps://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85078608053&origin=inward
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