Show simple item record

dc.contributor.authorFernández Blanco, Ana Cristina 
dc.contributor.authorIbáñez Martínez, David 
dc.contributor.authorColina, Álvaro 
dc.contributor.authorRuiz Fernández, Virginia
dc.contributor.authorHeras, Aránzazu 
dc.date.accessioned2015-09-29T09:29:32Z
dc.date.available2015-09-29T09:29:32Z
dc.date.issued2014-11
dc.identifier.issn0013-4686
dc.identifier.urihttp://hdl.handle.net/10259/3854
dc.description.abstractUV-Visible, NIR and Raman spectroelectrochemistry techniques have been used for the in-situ study of Pt nanoparticles (PtNPs) electrosynthesis on an electrochemically generated poly(3,4-ethylenedioxythiophene) film. Two electrochemical steps have been used to obtain in a reproducible way PtNPs with catalytic properties towards methanol oxidation: 1) deposition of Pt nuclei on the polymer modified electrode, 2) growth of these nuclei to form nanoparticles yielding drastic changes in the spectroscopic signal and a significant increase of the amount of Pt. A two steps procedure facilitates an interfacial growth mechanism of the nuclei over a diffusion controlled growth. Evolution of UV-Visible and NIR spectra during these two PtNPs synthesis steps helps to understand and explain the mechanism of generation of these nanoparticles. Besides, Energy Dispersive X-Ray analysis and Scanning Electron Microscopy images registered of the composite after each step of synthesis confirm the conclusions extracted from spectroelectrochemistry dataen
dc.description.sponsorshipMinisterio de Ciencia y Tecnologia (CTQ2010-17127, V.R. Programa Ramon y Cajal), Junta de Castilla y Leon (GR71, BU349-U13), and Academy of Finland (V.R., Academy Research Fellow) is gratefully acknowledged. C. F-B. thanks Ministerio de Educacion, Cultura y Deporte for a predoctoral FPU fellowship. D.I. is grateful for his FPI-MICINN agreement of the Ministerio de Economia y Competitividad. ICTS of Complutense University of Madrid (Spain) and PCT-UBU of Burgos University (Spain) are also acknowledged for SEM images and EDX analysis, respectively.en
dc.format.mimetypeapplication/pdf
dc.language.isoenges
dc.publisherElsevieren
dc.relation.ispartofElectrochimica Acta. 2014, V. 145, p. 139–147en
dc.subjectConducting polymersen
dc.subjectPEDOTen
dc.subjectPlatinum nanoparticlesen
dc.subjectElectrochemistryen
dc.subjectSpectroelectrochemistryen
dc.subject.otherQuímica analíticaes
dc.subject.otherChemistry, Analyticen
dc.titleSpectroelectrochemical study of the electrosynthesis of Pt nanoparticles/poly(3,4-(ethylenedioxythiophene) compositeen
dc.typeArtículoes
dc.typeinfo:eu-repo/semantics/article
dc.rights.accessRightsinfo:eu-repo/semantics/openAccess
dc.relation.publisherversionhttp://dx.doi.org/10.1016/j.electacta.2014.08.004
dc.identifier.doi10.1016/j.electacta.2014.08.004
dc.relation.projectIDinfo:eu-repo/grantAgreement/JCyL/GR71
dc.relation.projectIDinfo:eu-repo/grantAgreement/JCyL/BU349-U13
dc.relation.projectIDinfo:eu-repo/grantAgreement/MINCYT/CTQ2010-17127
dc.type.hasVersioninfo:eu-repo/semantics/submittedVersionen


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record