Moreno-García, Pavel; de Jesús Gálvez-Vázquez, María; Prenzel, Tobias; Winter, Johannes; Gálvez-Vázquez, Liliana; Broekmann, Peter; Waldvogel, Siegfried R (2024). Self-Standing Metal Foam Catalysts for Cathodic Electro-Organic Synthesis. Advanced materials, 36(9), e2307461. Wiley 10.1002/adma.202307461
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Advanced_Materials_-_2023_-_Moreno_Garc_a_-_Self_Standing_Metal_Foam_Catalysts_for_Cathodic_Electro_Organic_Synthesis.pdf - Accepted Version Restricted to registered users only until 2 November 2024. Available under License Publisher holds Copyright. Download (1MB) | Request a copy |
Although electro-organic synthesis is currently receiving renewed interest because of its potential to enable sustainability in chemical processes to value-added products, challenges in process development persist: For reductive transformations performed in protic media, an inherent issue is the limited choice of metallic cathode materials that can effectively suppress the parasitic hydrogen evolution reaction (HER) while maintaining a high activity towards the targeted electro-organic reaction. Current development trends are aimed at avoiding the previously used HER-suppressing elements (Cd, Hg and Pb) because of their toxicity. Here, we report the rational design of highly porous foam-type binary and ternary electrocatalysts with reduced Pb content. Optimized cathodes are tested in electro-organic reductions using an oxime to nitrile transformation as a model reaction relevant for the synthesis of fine chemicals. Their electrocatalytic performance is compared with that of the model CuSn7Pb15 bronze alloy that has recently been endorsed as the best cathode replacement for bare Pb electrodes. All developed metal foam catalysts outperform both bare Pb and the CuSn7Pb15 benchmark in terms of chemical yield and energetic efficiency. Moreover, post-electrolysis analysis of the crude electrolyte mixture and the cathode's surfaces through ICP-MS and SEM, respectively, reveal the foam catalysts' elevated resistance to cathodic corrosion. This article is protected by copyright. All rights reserved.
Item Type: |
Journal Article (Original Article) |
|---|---|
Division/Institute: |
08 Faculty of Science > Department of Chemistry, Biochemistry and Pharmaceutical Sciences (DCBP) |
UniBE Contributor: |
Moreno, Pavel, Galvez Vazquez, Liliana, Broekmann, Peter |
Subjects: |
500 Science > 570 Life sciences; biology 500 Science > 540 Chemistry |
ISSN: |
1521-4095 |
Publisher: |
Wiley |
Language: |
English |
Submitter: |
Pubmed Import |
Date Deposited: |
03 Nov 2023 11:05 |
Last Modified: |
03 Mar 2024 00:13 |
Publisher DOI: |
10.1002/adma.202307461 |
PubMed ID: |
37917032 |
Uncontrolled Keywords: |
cathodic corrosion dynamic hydrogen bubble template electro-organic synthesis identical location SEM metal electrodeposition metal foam catalyst |
BORIS DOI: |
10.48350/188528 |
URI: |
https://boris.unibe.ch/id/eprint/188528 |
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