Nitrogen-doping boosts ∗CO utilization and H2O activation on copper for improving CO2 reduction to C2+ products

Autor: Yisen Yang, Zhonghao Tan, Jianling Zhang, Jie Yang, Renjie Zhang, Sha Wang, Yi Song, Zhuizhui Su
Jazyk: angličtina
Rok vydání: 2024
Předmět:
Zdroj: Green Energy & Environment, Vol 9, Iss 9, Pp 1459-1465 (2024)
Druh dokumentu: article
ISSN: 2468-0257
DOI: 10.1016/j.gee.2023.09.002
Popis: To improve the electrocatalytic transformation of carbon dioxide (CO2) to multi-carbon (C2+) products is of great importance. Here we developed a nitrogen-doped Cu catalyst, by which the maximum C2+ Faradaic efficiency can reach 72.7% in flow-cell system, with the partial current density reaching 0.62 A cm−2. The in situ Raman spectra demonstrate that the ∗CO adsorption can be strengthened on such a N-doped Cu catalyst, thus promoting the ∗CO utilization in the subsequent C–C coupling step. Simultaneously, the water activation can be well enhanced by N doping on Cu catalyst. Owing to the synergistic effects, the selectivity and activity for C2+ products over the N-deoped Cu catalyst are much improved.
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