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Methanol Oxidation on Graphenic-Supported Platinum Catalysts

Área de Química Física, Departamento de Química, Facultad de Ciencias, Universidad de La Laguna (ULL), Instituto de Materiales y Nanotecnología (IMN), 38200 La Laguna, Tenerife, Spain
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Surfaces 2019, 2(1), 16-31; https://doi.org/10.3390/surfaces2010002
Received: 19 November 2018 / Revised: 28 December 2018 / Accepted: 29 December 2018 / Published: 6 January 2019
(This article belongs to the Special Issue Electrochemical Surface Science: Basics and Applications)
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Abstract

Graphene oxide (GO), reduced graphene oxide by thermal treatment (rGO-TT), nitrogen-modified rGO (N-rGO), and carbon Vulcan were synthesized and employed in the current work as catalyst support for Pt nanoparticles, to study their properties and impact toward the methanol oxidation reaction (MOR) in sulfuric acid medium. Several physicochemical techniques, such as X-ray photoelectron spectroscopy (XPS), X-ray powder diffraction (XRD), Transmission electron microscopy (TEM), energy-dispersive X-ray spectroscopy (EDX), Raman, and elemental analysis were employed to characterize the novel materials, while potentiodynamic and potentiostatic methods were used to study catalytic performance toward the methanol oxidation reaction in acidic medium. The main results indicate a high influence of the support on the surface electronic state of the catalyst, and consequently the catalytic performance toward the MOR is modified. Accordingly, Pt/N-rGO and Pt/rGO-TT show the lowest and the highest catalytic performance toward the MOR, respectively. View Full-Text
Keywords: electrocatalysis; catalysts; methanol oxidation reaction; graphene; DMFC; Pt electrocatalysis; catalysts; methanol oxidation reaction; graphene; DMFC; Pt
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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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Arteaga, G.; Rivera-Gavidia, L.M.; Martínez, S.J.; Rizo, R.; Pastor, E.; García, G. Methanol Oxidation on Graphenic-Supported Platinum Catalysts. Surfaces 2019, 2, 16-31.

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