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C 2017, 3(4), 36; doi:10.3390/c3040036

The Role of Carbon on Copper–Carbon Composites for the Electrooxidation of Alcohols in an Alkaline Medium

1
Department of Physical Chemistry and Institute of Electrochemistry, University of Alicante, 03080 Alicante, Spain
2
Conditions Extrêmes et Matériaux, Haute Température et Irradiation (CEMHTI) UPR 3079, Le Centre National de la Recherche Scientifique (CNRS), Université d’Orléans, 45071 Orléans, France
3
Departamento de Quimica, Universidade de Lisboa, 1749-016 Lisboa, Portugal
4
Department of Chemistry and Biochemistry, The City College of New York, 160 Convent Avenue, New York, NY 10031, USA
*
Author to whom correspondence should be addressed.
Received: 6 October 2017 / Revised: 14 November 2017 / Accepted: 15 November 2017 / Published: 20 November 2017
(This article belongs to the Special Issue Smart Carbon Materials in Catalysis)
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Abstract

Copper–carbon composites were prepared following various different synthetic routes and using various carbon precursors (i.e., lignocellulose and graphite oxide), and were used as electrocatalysts for the oxidation of propargyl alcohol (PGA) in an alkaline medium. The electrochemical response of the copper-based catalysts was analyzed in terms of the influence of the metallic species, the carbon matrix incorporated in the composites, and the chemical structure of the ionomers—Nafion and poly (4-vinylpyridine) cross-linked methyl chloride quaternary salt resin (4VP)—used in the fabrication of the electrodes. Data has shown that the incorporation of reduced graphene oxide sheets between the copper metallic particles increased the performance due to the increased conductivity provided by the carbonaceous phase. Catalytic inks with ca. 40 wt.% Nafion and 12 wt.% 4VP as ionomers provided the best electrochemical response and cohesion of the catalysts, minimizing the losses in the electroactivity of the copper species. View Full-Text
Keywords: copper-based electrocatalysts; carbonaceous matrix; reduced graphene oxide; alkaline medium; alcohol electrooxidation copper-based electrocatalysts; carbonaceous matrix; reduced graphene oxide; alkaline medium; alcohol electrooxidation
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

García-Cruz, L.; Ania, C.O.; Carvalho, A.P.; Bandosz, T.J.; Montiel, V.; Iniesta, J. The Role of Carbon on Copper–Carbon Composites for the Electrooxidation of Alcohols in an Alkaline Medium. C 2017, 3, 36.

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