期刊
CELL REPORTS PHYSICAL SCIENCE
卷 3, 期 5, 页码 -出版社
CELL PRESS
DOI: 10.1016/j.xcrp.2022.100869
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类别
资金
- National Natural Science Foundation of China [21601154, 21776255, 21972126, 21978264, 21905250]
This study reports self-assembled nanofibers that can couple CO2RR with NO2-RR to electrosynthesize urea. The rich structural defects and AuCu bimetallic composition provide highly catalytically active sites, and the constructed AuCu nanofibers display excellent urea synthesis performance.
Carbon dioxide reduction reaction (CO2RR) is a promising technology for mitigating greenhouse gas emission and achieving carbon neutrality. However, coupling CO2RR with other reactions to produce high value-added chemicals remains a challenge. In this work, we report self-assembled nanofibers composed of ultrathin AuCu alloy nanowires possessing a Boerdijk-Coxeter structure with (111)-dominant facets for the electrosynthesis of urea by coupling CO2RR with nitrite reduction reaction (NO2-RR). The rich structural defects and AuCu bimetallic alloy composition provide a large number of highly catalytically active sites. The constructed AuCu nanofibers display excellent urea synthesis performance in the electrolyte solution containing 0.01 M KNO2 with continuous drumming of CO2, achieving a high urea yield rate of up to 3,889.6 mg h(-1 )mg(cat.)(-1) and a high faradic efficiency of 24.7% at -1.55 V (versus Ag/AgCl). This work provides a feasible method for the rational design of self-assembled bimetallic nanofibers for electrosynthesis of urea under ambient conditions.
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