2026-06-21T20:21:48Zhttps://riubu.ubu.es/oai/requestoai:riubu.ubu.es:10259/38542021-11-10T09:38:17Zcom_10259_3844com_10259_5086com_10259_2604col_10259_3845
Repositorio Institucional de la Universidad de Burgos
author
Fernández Blanco, Ana Cristina
author
Ibáñez Martínez, David
author
Colina, Álvaro
author
Ruiz Fernández, Virginia
author
Heras, Aránzazu
2015-09-29T09:29:32Z
2015-09-29T09:29:32Z
2014-11
0013-4686
http://hdl.handle.net/10259/3854
10.1016/j.electacta.2014.08.004
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
eng
Conducting polymers
PEDOT
Platinum nanoparticles
Electrochemistry
Spectroelectrochemistry
Spectroelectrochemical study of the electrosynthesis of Pt nanoparticles/poly(3,4-(ethylenedioxythiophene) composite
info:eu-repo/semantics/article
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https://riubu.ubu.es/bitstream/10259/3854/1/Fern%c3%a1ndez-EA_2014.pdf
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Fernández-EA_2014.pdf.txt