The role of formic acid/formate equilibria in the oxidation of formic acid on Pt (111)

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Título: The role of formic acid/formate equilibria in the oxidation of formic acid on Pt (111)
Autor/es: Busó-Rogero, Carlos | Ferre-Vilaplana, Adolfo | Herrero, Enrique | Feliu, Juan M.
Grupo/s de investigación o GITE: Electroquímica de Superficies
Centro, Departamento o Servicio: Universidad de Alicante. Departamento de Química Física | Universidad de Alicante. Instituto Universitario de Electroquímica
Palabras clave: Formic acid | Platinum | Single crystal | Formate adsorption | Perchlorate | DFT
Área/s de conocimiento: Química Física
Fecha de publicación: ene-2019
Editor: Elsevier
Cita bibliográfica: Electrochemistry Communications. 2019, 98: 10-14. doi:10.1016/j.elecom.2018.11.011
Resumen: The formic acid oxidation reaction has been studied in concentrated perchloric acid solutions (up to 9.14 M (60%)) on the Pt (111) surface to explore the relationships between interfacial properties and kinetics. It is found that, as the concentration of perchloric acid in the supporting electrolyte increases, the current markedly decreases, making it possible to detect adsorbed formate on the surface by voltammetric methods. With the aid of DFT calculations, it is shown that the diminution in current is the result of two opposing factors: the reduction in the concentration of free formate in solution and electrode charge effects which encourage the adsorption of formate in a particular configuration. Additionally, the electrochemical behavior under highly acidic conditions suggests the formation of clathrate structures and emphasizes the relevance of the water structure effect in electrode adsorption processes.
Patrocinador/es: This work has been financially supported by the Ministerio de Economía, Industria y Competitividad through the project CTQ2016-76221-P. CBR also thanks his Postdoctoral fellowship to Generalitat Valenciana (APOSTD/2017/010).
ISSN: 1388-2481 (Print) | 1873-1902 (Online)
DOI: 10.1016/j.elecom.2018.11.011
Idioma: eng
Tipo: info:eu-repo/semantics/article
Derechos: © 2018 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (
Revisión científica: si
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Aparece en las colecciones:INV - EQSUP - Artículos de Revistas

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