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>Cu3N nanoparticles with both (100) and (111) facets for enhancing the selectivity and activity of CO2 electroreduction to ethylene
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Cu3N nanoparticles with both (100) and (111) facets for enhancing the selectivity and activity of CO2 electroreduction to ethylene
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机译：Cu3N nanoparticles with both (100) and (111) facets for enhancing the selectivity and activity of CO2 electroreduction to ethylene
CO2 electroreduction to high value-added chemicals is a prospective approach to realize the utilization of CO2 resources and mitigate the greenhouse effect. Ethylene (C2H4), as an important chemical material, is a desirable product of CO2 reduction, while the lack of efficient catalysts with high selectivity and activity limits the progress. In this work, we synthesized Cu3N nanoparticles (NPs) enclosed with different crystal facets successfully by tailoring the ligand. Besides, the performance of the as-prepared Cu3N NPs for the electrocatalytic reduction of CO2 to C2H4 is evaluated. The results show that the selectivity and activity of C2H4 production are closely related to the exposed crystal facets of Cu3N NPs. The Cu3N-2 NPs show the highest CO2RR selectivity to C2H4 at −0.8 V (vs. reversible hydrogen electrode (RHE)) with a faradaic efficiency of 61.1% and excellent stability for at least 10 h. This work provides a new route for enhancing the selectivity of CO2 electrocatalytic reduction by crystal facet engineering.
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