Pulse potential mediated selectivity for the electrocatalytic oxidation of glycerol to glyceric acid

Wei Chen, Liang Zhang, Leitao Xu, Yuanqing He, Huan Pang (), Shuangyin Wang and Yuqin Zou ()
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Wei Chen: Hunan University
Liang Zhang: Hunan University
Leitao Xu: Hunan University
Yuanqing He: Hunan University
Huan Pang: Yangzhou University
Shuangyin Wang: Hunan University
Yuqin Zou: Hunan University

Nature Communications, 2024, vol. 15, issue 1, 1-11

Abstract: Abstract Preventing the deactivation of noble metal-based catalysts due to self-oxidation and poisonous adsorption is a significant challenge in organic electro-oxidation. In this study, we employ a pulsed potential electrolysis strategy for the selective electrocatalytic oxidation of glycerol to glyceric acid over a Pt-based catalyst. In situ Fourier-transform infrared spectroscopy, quasi-in situ X-ray photoelectron spectroscopy, and finite element simulations reveal that the pulsed potential could tailor the catalyst’s oxidation and surface micro-environment. This prevents the overaccumulation of poisoning intermediate species and frees up active sites for the re-adsorption of OH adsorbate and glycerol. The pulsed potential electrolysis strategy results in a higher glyceric acid selectivity (81.8%) than constant-potential electrocatalysis with 0.7 VRHE (37.8%). This work offers an efficient strategy to mitigate the deactivation of noble metal-based electrocatalysts.

Date: 2024
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DOI: 10.1038/s41467-024-46752-4

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