Tailoring of single copper atoms anchored on N, P co-doped carbon for electrochemical CO2 reduction
The electrochemical CO2 reduction reaction (CO2RR) is a promising strategy to convert the greenhouse gas CO2 into valuable products using electricity as a feedstock. This study presents the development of single-atom copper catalyst anchored on a nitrogen and phosphorus co-doped carbon matrix design...
| Autores: | , , , , |
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| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2025 |
| País: | España |
| Institución: | Consejo Superior de Investigaciones Científicas (CSIC) |
| Repositorio: | DIGITAL.CSIC. Repositorio Institucional del CSIC |
| OAI Identifier: | oai:digital.csic.es:10261/402696 |
| Acceso en línea: | http://hdl.handle.net/10261/402696 https://api.elsevier.com/content/abstract/scopus_id/105001160072 |
| Access Level: | acceso abierto |
| Palabra clave: | CO2 reduction reaction Copper electrocatalyst Nitrogen doped-carbon Phosphorous Porosity Single atoms |
| Sumario: | The electrochemical CO2 reduction reaction (CO2RR) is a promising strategy to convert the greenhouse gas CO2 into valuable products using electricity as a feedstock. This study presents the development of single-atom copper catalyst anchored on a nitrogen and phosphorus co-doped carbon matrix designed for CO2RR. The impact of carbonization temperature on the structural properties of the electrocatalysts, such as porosity and the electronic environment, was systematically examined, revealing its influence on the selectivity towards C1 and C2+ products. Increased microporosity was associated with an enhanced hydrogen evolution reaction (HER), whereas mesoporosity contributed to improved CO2 reduction reaction activity. Aberration-corrected transmission electron microscope evidenced that P addition improved the dispersion of Cu, whether in the form of single atoms or clusters. Moreover, phosphorus doping suppressed HER and promoted the formation of products such as methane, ethylene, and ethanol. The coexistence of Cu+, Cu0, and copper single atoms was identified as key to facilitating C-C bond formation. This study emphasizes the critical balance between textural and electronic properties in optimizing catalytic performance and provides valuable insights for designing advanced electrocatalysts for CO2 valorization. |
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