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Robust and Efficient Pd–Cu Bimetallic Catalysts with Porous Structure for Formic Acid Oxidation and a Mechanistic Study of Electrochemical Dealloying.
- Source :
- Electrocatalysis; Mar2021, Vol. 12 Issue 2, p117-126, 10p
- Publication Year :
- 2021
-
Abstract
- To obtain highly efficient and robust electrocatalysts for formic acid oxidation, Pd<subscript>x</subscript>Cu<subscript>y</subscript>/C binary catalysts with porous structures were successfully prepared via electrochemical dealloying. Catalysts with different Pd/Cu atomic ratios were characterized through transmission electron microscopy, inductively coupled plasma atomic emission spectroscopy, and X-ray diffraction. The optimized dealloyed Pd<subscript>1</subscript>Cu<subscript>4</subscript>/C catalyst with a porous structure displayed a catalytic activity of 2611 A g<superscript>−1</superscript> and high stability (30.5% activity retention under repeated cyclic voltammetric (CV) patrol), whereas a commercial Pd/C-Aldrich benchmark showed a catalytic activity of 785 A g<superscript>−1</superscript> and retained 16.5% activity. A detailed mechanistic study of electrochemical dealloying was performed. Under repeated CV patrol, Pd-enriched porous architectures evolved from Pd-poor surfaces, accompanied by successive Cu dissolution. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 18682529
- Volume :
- 12
- Issue :
- 2
- Database :
- Complementary Index
- Journal :
- Electrocatalysis
- Publication Type :
- Academic Journal
- Accession number :
- 148888778
- Full Text :
- https://doi.org/10.1007/s12678-020-00632-9