Self-assembled infinite silver cluster with atomic precision as a scalable catalyst for CO2-electroreduction under industry-relevant reaction rates
The multi-gram synthesis of a phenylacetylide silver cluster catalyst and its application to the electroreduction of CO2 to carbon monoxide is described. The procedure involves one synthetic step from commercially available precursors and yields highly crystalline silver acetylide clusters in quanti...
| Autores: | , , , , , , , , |
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| Formato: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2024 |
| País: | España |
| Recursos: | Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya) |
| Repositorio: | Recercat. Dipósit de la Recerca de Catalunya |
| OAI Identifier: | oai:recercat.cat:2072/537972 |
| Acesso em linha: | http://hdl.handle.net/2072/537972 https://doi.org/10.1039/D4EY00160E |
| Access Level: | acceso abierto |
| Palavra-chave: | Química 54 - Química |
| Resumo: | The multi-gram synthesis of a phenylacetylide silver cluster catalyst and its application to the electroreduction of CO2 to carbon monoxide is described. The procedure involves one synthetic step from commercially available precursors and yields highly crystalline silver acetylide clusters in quantitative yields with no required purification. The crystal structure of the cluster was resolved from the native powder using cutting-edge electron diffraction techniques (3D-ED), and showed to consist of an infinite silver tubular core with radially disposed phenylacetylene ligands. Its catalytic properties were investigated at industry-relevant rates in a flow cell electrolyser. Faradaic efficiencies for CO above 95% were achieved at current densities reaching 350 mA cm−2. The catalyst's selectivity and stability were shown to be the result of the unique polymeric structure, a result supported by electrochemical characterisation and DFT modelling. |
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