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The electrooxidation of formic acid catalyzed by Pd–Ga nanoalloys

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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

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Publication details

The article was received on 17 Nov 2018, accepted on 05 Feb 2019 and first published on 06 Feb 2019


Article type: Paper
DOI: 10.1039/C8CY02356E
Citation: Catal. Sci. Technol., 2019, Advance Article

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    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, Advance Article , DOI: 10.1039/C8CY02356E

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