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Etching high-Fe-content PtPdFe nanoparticles as efficient catalysts towards glycerol electrooxidation

Abstract

Recently, great effort is being made to improve activity and stability, as well as increase the utilization efficiency of noble metal-based electrocatalyst. Herein, a dealloyed PtPd-based nanoparticle (PtPd-x/C, x = 0, 2, 4, 6, 8, 10), which contains a small amount of Fe inside is obtained by etching a high-Fe-content PtPdFe nanoparticle precursor. It means the final PtPd-x/C having a large amount of PtPd exposed on surface can effectively increase the utilization efficiency of the unit precious-metal to facilitate the glycerol electrooxidation. Attractively, the optimal one of PtPd-6/C not only exhibits higher electrochemical active surface area (113.33 cm2 mg-1 PtPd), oxidation peak current (0.86 A mg-1 PtPd) and stability (0.48 A mg-1 PtPd after 3000s and 5.8% current decreases after 400 cycles), but also shows excellent CO tolerance compared to others. This work demonstrates that the design of multi-component noble metal composite is a feasible way in obtaining some efficient electrocatalysts.

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Supplementary files

Article information


Submitted
19 Dec 2019
Accepted
11 Feb 2020
First published
11 Feb 2020

New J. Chem., 2020, Accepted Manuscript
Article type
Paper

Etching high-Fe-content PtPdFe nanoparticles as efficient catalysts towards glycerol electrooxidation

J. Zhao, W. Jing, T. Tan, X. Liu, Y. Kang and W. Wang, New J. Chem., 2020, Accepted Manuscript , DOI: 10.1039/C9NJ06259A

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