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Metallenes are an emerging class of two-dimensional (2D) material with outstanding potential in electrocatalysis. Herein, we present a new PdMoSb trimetallene produced by a facile wet-chemistry procedure and tested for the alcohol oxidation reaction. PdMoSb shows an extremely high Pd utilization and superior performance toward ethanol, methanol, and glycerol electro-oxidation compared with PdMo and commercial Pd/C catalysts. Experimental results and density functional theory calculations reveal that the enhanced activity relies not only on the high surface area that characterizes the ultrathin 2D metallene structure, but also on the particular electronic configuration of Sb. Sb facilitates OH adsorption in the reactive-intermediate pathway and strongly enhances the CO tolerance in the poisoning-intermediate pathway for alcohol oxidation. The excellent alcohol oxidation performance of PdMoSb trimetallene demonstrates the high potential of multimetallenes in the field of electrocatalysis.

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Publication history
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Acknowledgements

Publication history

Received: 11 June 2022
Revised: 26 July 2022
Accepted: 04 August 2022
Published: 10 September 2022
Issue date: February 2023

Copyright

© Tsinghua University Press 2022

Acknowledgements

Acknowledgements

This work was financially supported by the National Natural Science Foundation of China (No. 22008091), the funding for scientific research startup of Jiangsu University (No. 19JDG044), and the Jiangsu Provincial Program for High-Level Innovative and Entrepreneurial Talents Introduction. A. C. thanks support from the project COMBENERGY (No. PID2019-105490RB-C32) of the Spanish Ministerio de Ciencia e Innovación.

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