Comparative study of different carbon nanotube-supported platinum bimetallic and trimetallic catalysts for methanol and ethanol oxidation

Abstract

We report here effects of single-walled carbon nanotube-supported Pt-based bimetallic catalysts (Pt-Cr, Pt-Mn, Pt-Fe, Pt-Co, Pt-Ni, and Pt-Sn) and trimetallic catalyst (Pt-Cr-Co) on methanol and ethanol oxidation. In comparison to a Pt catalyst, the introduction of other elements can improve catalytic oxidation characteristics in terms of oxidation potential, oxidation current density, and the tolerance to poisoning by absorbed species. Meanwhile, the Pt-Cr-Co trimetallic catalyst has better catalytic properties than Pt-Cr and Pt-Co catalysts. For instance, in comparison to a Pt catalyst for methanol oxidation, the addition of Fe, Ni, and Sn improves the tolerance to poisoning, increases the oxidation current density, and decreases the oxidation potential, respectively.

Department(s)

Physics, Astronomy, and Materials Science

Document Type

Conference Proceeding

DOI

https://doi.org/10.1149/1.3635663

Publication Date

12-1-2011

Journal Title

ECS Transactions

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