| Autor: |
Wen, Yan, Fang, Nan, Liu, Wenqiang, Yang, Tang, Xu, Yong, Huang, Xiaoqing |
| Zdroj: |
Journal of Materials Chemistry A; 5/28/2023, Vol. 11 Issue 20, p10823-10827, 5p |
| Abstrakt: |
Cu has been regarded as the most promising catalyst for electrochemical CO2 reduction reaction (CO2RR), a promising strategy for reducing CO2 emission and converting CO2 to value-added chemicals using renewable electrical energy. Nevertheless, selective formate (HCOO−) production via CO2RR over Cu-based catalysts has been rarely reported because Cu is generally used as the active site for C–C coupling to C2+ products. Herein, we demonstrate that Cu7S4 nanosheets (NSs) can serve as efficient catalysts for CO2RR to HCOO−. Detailed investigations show that, different from CuO that enables the C–C coupling to C2+ products, the Cu–S bond in Cu7S4 NSs favors protonation to produce HCOO−. Impressively, Cu7S4 NSs display a HCOO− faradaic efficiency (FE) of 82.7% with a formation rate of 8.5 mmol h−1 cm−2, which has surpassed most reported catalysts for CO2RR to HCOO−. This work provides a highly efficient catalyst for CO2RR to HCOO−, which may promote fundamental research on the catalyst design for CO2RR to target products. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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