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dc.contributor.author | Fernández Blanco, Ana Cristina | |
dc.contributor.author | Ibáñez Martínez, David | |
dc.contributor.author | Colina Santamaría, Álvaro | |
dc.contributor.author | Ruiz Fernández, Virginia | |
dc.contributor.author | Heras Vidaurre, Aránzazu | |
dc.date.accessioned | 2015-09-29T09:29:32Z | |
dc.date.available | 2015-09-29T09:29:32Z | |
dc.date.issued | 2014-11 | |
dc.identifier.issn | 0013-4686 | |
dc.identifier.uri | http://hdl.handle.net/10259/3854 | |
dc.description.abstract | UV-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 data | en |
dc.description.sponsorship | Ministerio 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.mimetype | application/pdf | |
dc.language.iso | eng | es |
dc.publisher | Elsevier | en |
dc.relation.ispartof | Electrochimica Acta. 2014, V. 145, p. 139–147 | en |
dc.subject | Conducting polymers | en |
dc.subject | PEDOT | en |
dc.subject | Platinum nanoparticles | en |
dc.subject | Electrochemistry | en |
dc.subject | Spectroelectrochemistry | en |
dc.subject.other | Química analítica | es |
dc.subject.other | Chemistry, Analytic | en |
dc.title | Spectroelectrochemical study of the electrosynthesis of Pt nanoparticles/poly(3,4-(ethylenedioxythiophene) composite | en |
dc.type | info:eu-repo/semantics/article | |
dc.rights.accessRights | info:eu-repo/semantics/openAccess | |
dc.relation.publisherversion | http://dx.doi.org/10.1016/j.electacta.2014.08.004 | |
dc.identifier.doi | 10.1016/j.electacta.2014.08.004 | |
dc.relation.projectID | info:eu-repo/grantAgreement/JCyL/GR71 | |
dc.relation.projectID | info:eu-repo/grantAgreement/JCyL/BU349-U13 | |
dc.relation.projectID | info:eu-repo/grantAgreement/MINCYT/CTQ2010-17127 | |
dc.type.hasVersion | info:eu-repo/semantics/submittedVersion | en |