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    Por favor, use este identificador para citar o enlazar este ítem: http://hdl.handle.net/10259/3854

    Título
    Spectroelectrochemical study of the electrosynthesis of Pt nanoparticles/poly(3,4-(ethylenedioxythiophene) composite
    Autor
    Fernández Blanco, Ana Cristinauntranslated
    Ibáñez Martínez, Daviduntranslated
    Colina, Álvarountranslated
    Ruiz Fernández, Virginia
    Heras, Aránzazuuntranslated
    Publicado en
    Electrochimica Acta. 2014, V. 145, p. 139–147
    Editorial
    Elsevier
    Fecha de publicación
    2014-11
    ISSN
    0013-4686
    DOI
    10.1016/j.electacta.2014.08.004
    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
    Palabras clave
    Conducting polymers
    PEDOT
    Platinum nanoparticles
    Electrochemistry
    Spectroelectrochemistry
    Materia
    Química analítica
    Chemistry, Analytic
    URI
    http://hdl.handle.net/10259/3854
    Versión del editor
    http://dx.doi.org/10.1016/j.electacta.2014.08.004
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