Molecular engineering to introduce carbonyl between nickel salophen active sites to enhance electrochemical CO2 reduction to methanol
The electrochemical reduction of CO to methanol is a potentially cost-effective strategy to reduce the concentration of this greenhouse gas while at the same time producing a value-added chemical. Herein, we detail a highly efficient 2D nickel organic framework containing a large density of highly d...
| Autores: | , , , , , , , , , , , , , |
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| Tipo de recurso: | artículo |
| Fecha de publicación: | 2022 |
| País: | España |
| Institución: | Universitat Autònoma de Barcelona |
| Repositorio: | Dipòsit Digital de Documents de la UAB |
| Idioma: | inglés |
| OAI Identifier: | oai:ddd.uab.cat:266334 |
| Acceso en línea: | https://ddd.uab.cat/record/266334 https://dx.doi.org/urn:doi:10.1016/j.apcatb.2022.121451 |
| Access Level: | acceso abierto |
| Palabra clave: | Two dimensional π-d organic frameworks Atomically dispersed nickel Carbonyl group Electrocatalytic CO2 reduction Methanol |
| Sumario: | The electrochemical reduction of CO to methanol is a potentially cost-effective strategy to reduce the concentration of this greenhouse gas while at the same time producing a value-added chemical. Herein, we detail a highly efficient 2D nickel organic framework containing a large density of highly dispersed salophen NiNO active sites toward electrochemical CORR to methanol. By tuning the ligand environment of the salophen NiNO, the electrocatalytic activity of the material toward CO reduction can be significantly improved. We prove that by introducing a carbonyl group at the ligand environment of the Ni active sites, the electrochemical CO reduction activity is highly promoted and its product selectivity reaches a Faradaic efficiency of 27% toward the production of methanol at - 0.9 V vs RHE. The salophen-based π-d conjugated metal-organic framework presented here thus provides the best performance toward CO reduction to methanol among the previously developed nickel-based electrocatalysts. |
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