2024-03-28T18:17:22Zhttps://riubu.ubu.es/oai/requestoai:riubu.ubu.es:10259/38542021-11-10T09:38:17Zcom_10259_3844com_10259_5086com_10259_2604col_10259_3845
Spectroelectrochemical study of the electrosynthesis of Pt nanoparticles/poly(3,4-(ethylenedioxythiophene) composite
Fernández Blanco, Ana Cristina
Ibáñez Martínez, David
Colina, Álvaro
Ruiz Fernández, Virginia
Heras, Aránzazu
Conducting polymers
PEDOT
Platinum nanoparticles
Electrochemistry
Spectroelectrochemistry
Química analítica
Chemistry, Analytic
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
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.
2015-09-29T09:29:32Z
2015-09-29T09:29:32Z
2014-11
info:eu-repo/semantics/article
info:eu-repo/semantics/submittedVersion
0013-4686
http://hdl.handle.net/10259/3854
10.1016/j.electacta.2014.08.004
eng
Electrochimica Acta. 2014, V. 145, p. 139–147
http://dx.doi.org/10.1016/j.electacta.2014.08.004
info:eu-repo/grantAgreement/JCyL/GR71
info:eu-repo/grantAgreement/JCyL/BU349-U13
info:eu-repo/grantAgreement/MINCYT/CTQ2010-17127
info:eu-repo/semantics/openAccess
application/pdf
Elsevier
https://riubu.ubu.es/bitstream/10259/3854/3/Fern%c3%a1ndez-EA_2014.pdf.jpg
Hispana
TEXT
http://rightsstatements.org/vocab/CNE/1.0/
RIUBU. Repositorio Institucional de la Universidad de Burgos
http://hdl.handle.net/10259/3854