| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 10293946 | Renewable Energy | 2016 | 11 Pages |
Abstract
Platinum-gold nanoparticles supported on multi-wall carbon nanotubes (MWCNT) with various Pt:Au ratios are prepared by microemulsion method for use as electrocatalysts in the oxygen reduction reaction (ORR). The influence of the Pt:Au ratio on the electrocatalytic activity during ORR is investigated in detail. The synthesized nanomaterials are analyzed by different physicochemical techniques. The electrocatalytic activity for oxygen reduction is evaluated using a rotating disk electrode (RDE) system. We report that the activity and oxygen reduction mechanism depends strongly on the Pt:Au ratio; in the case of Pt:Au ratio higher than 0.60, oxygen is reduced to water by a four electron process pathway, while at 0.33 ratio the reaction follows a two-electron-transfer mechanism.
Related Topics
Physical Sciences and Engineering
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Renewable Energy, Sustainability and the Environment
Authors
R.M. Félix-Navarro, M. Beltrán-Gastélum, E.A. Reynoso-Soto, F. Paraguay-Delgado, G. Alonso-Nuñez, J.R. Flores-Hernández,