Underpotential deposition of Nickel on platinum single crystal electrodes

Please use this identifier to cite or link to this item: http://hdl.handle.net/10045/77174
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Title: Underpotential deposition of Nickel on platinum single crystal electrodes
Authors: Sarabia, Francisco J. | Climent, Victor | Feliu, Juan M.
Research Group/s: Electroquímica de Superficies
Center, Department or Service: Universidad de Alicante. Departamento de Química Física | Universidad de Alicante. Instituto Universitario de Electroquímica
Keywords: Nickel deposition | Platinum single crystal | FTIR spectroscopy | Cyclic voltammetry | Carbon monoxide | Charge displacement
Knowledge Area: Química Física
Issue Date: 15-Jun-2018
Publisher: Elsevier
Citation: Journal of Electroanalytical Chemistry. 2018, 819: 391-400. doi:10.1016/j.jelechem.2017.11.033
Abstract: The initial stages of nickel electrodeposition on platinum single crystal electrodes have been investigated using cyclic voltammetry and CO charge displacement. While at pH = 1, nickel deposition is not visible in the voltammogram, regardless of the crystal orientation, at buffered solutions with pH > 3, nickel presence in solution produces clear voltammetric peaks around 0.35 V RHE on Pt(111) and Pt(110). Conversely, no clear voltammetric peaks are observed at any of the studied pHs on Pt(100). CO charge displacement experiments suggest that deposited nickel is in the form of a nickel hydroxide. Coulometric analysis is used to deduce the stoichiometry of the deposited adlayer. Moreover, the effect of nickel presence on CO oxidation has been investigated and the CO adlayer characterised using FTIR reflection absorption spectroscopy.
Sponsor: The authors thankfully acknowledge financial support from the Ministerio de Economia, Industria y Competitividad (CTQ2016-76221-P and PEJ-2014-A-57942/PEJ-2014-P-00295).
URI: http://hdl.handle.net/10045/77174
ISSN: 1572-6657 (Print) | 1873-2569 (Online)
DOI: 10.1016/j.jelechem.2017.11.033
Language: eng
Type: info:eu-repo/semantics/article
Rights: © 2017 Elsevier B.V.
Peer Review: si
Publisher version: https://doi.org/10.1016/j.jelechem.2017.11.033
Appears in Collections:INV - EQSUP - Artículos de Revistas

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