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Highly Stable Pt-Ru Nanoparticles Supported on Three-Dimensional Cubic Ordered Mesoporous Carbon (Pt-Ru/CMK-8) as Promising Electrocatalysts for Methanol Oxidation

Lookup NU author(s): Taiwo Alaje, Emeritus Professor Keith Scott

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Abstract

The cost of the catalysts used in the direct methanol fuel cell poses a challenge to its widespread use as an energy efficient and environment friendly fuel conversion technology. In this study, two types of highly ordered mesoporous carbon CMK-8 (I and II) with high surface area and 3-D bicontinuous interpenetrating channels were synthesized and deposited with Pt-Ru nanoparticles using the sodium borohydride reduction method. The electrocatalytic capabilities for methanol oxidation were investigated using cyclic voltammetry and chronoamperometry, and the results were compared with that of Pt-Ru deposited on Vulcan XC-72 using the same preparation method as well as with commercial Pt-Ru/C (E-TEK) catalyst. Pt-Ru/CMK-8-I synthesized by the method developed in this work revealed an outstanding specific mass activity (487.9 mA/mg) and superior stability compared with the other supports, thus substantiating its potential to reduce the costs of DMFC catalysts.

Publication metadata

Author(s): Maiyalagan T, Alaje TO, Scott K

Publication type: Article

Publication status: Published

Journal: Journal of Physical Chemistry Part C: Nanomaterials, Interfaces and Hard Matter

Year: 2012

Volume: 116

Issue: 3

Pages: 2630-2638

Print publication date: 16/12/2011

ISSN (print): 1932-7447

ISSN (electronic): 1932-7455

Publisher: American Chemical Society

URL: http://dx.doi.org/10.1021/jp210266n

DOI: 10.1021/jp210266n

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