Issue 5, 2019

The electrooxidation of formic acid catalyzed by Pd–Ga nanoalloys

Abstract

In the present work, PdxGay alloys on oxygen-species-functionalized carbon nanotubes (PdxGay/OCNTs) are prepared as catalysts for the electrooxidation of formic acid by a facile method. Among all the catalysts, the catalyst with a Pd : Ga atomic ratio of 3.9 : 1 (Pd3.9Ga1) exhibits mass activity of 1321 A g−1 and improved stability. The functional groups on the modified CNT surfaces provide anchoring sites for Pd3.9Ga1 nanoalloys of 2 nm average size. Surface analysis reveals the appearance of a Pd 4d band center shift, which may weaken the adsorption of the formate intermediate. Pd3.9Ga1/OCNT with a modified electronic structure shows enhanced catalytic activity and stability towards the HCOOH oxidation reaction.

Graphical abstract: The electrooxidation of formic acid catalyzed by Pd–Ga nanoalloys

Supplementary files

Article information

Article type
Paper
Submitted
17 Nov 2018
Accepted
05 Feb 2019
First published
06 Feb 2019

Catal. Sci. Technol., 2019,9, 1255-1259

The electrooxidation of formic acid catalyzed by Pd–Ga nanoalloys

S. Xu, J. Zhang, J. Wang, L. Lv, Y. Sun, X. Huang, T. Lin, X. Huang and L. Shao, Catal. Sci. Technol., 2019, 9, 1255 DOI: 10.1039/C8CY02356E

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