文章摘要
铜-镍纳米针串联协同作用强化电还原 CO2合成乙醇
Promoting ethanol production from electrochemical reduction of CO2 on copper-nickel nanoneedle tandem electrocatalyst
投稿时间:2024-03-27  修订日期:2024-05-09
DOI:
中文关键词: 电还原 CO2、乙醇、C-C 偶联反应、电催化
英文关键词: Electrocatalytic reduction of CO2, ethanol, C-C coupling reaction, electrocatalysis
基金项目:
作者单位
高万涛 大连理工大学 
刘艳明* 大连理工大学 
鲁娜 大连理工大学 
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中文摘要:
      电催化还原 CO2 是一种有效的碳减排并合成高附加值多碳产物乙醇的绿色新兴方法。然而,电催化 还原 CO2 合成乙醇存在效率低的难题。本研究设计了具有针尖形貌的泡沫铜-镍用于电催化还原 CO2,基 于镍良好的产 CO 性能、铜的 C-C 偶联性能,二者串联协同催化促进产乙醇。在-0.6 V (vs Ag/AgCl)的条 件下,泡沫铜-镍产乙醇的法拉第效率达到 65%,经疏水处理抑制析氢副反应后,产乙醇的法拉第效率提 高至 73%。
英文摘要:
      Electrocatalytic reduction of CO2 is a green and emerging alternative method for reducing CO2 emission and producing ethanol, a valuable multicarbon product. However, electrocatalytic reduction of CO2 to ethanol suffers from low efficiency. Herein, copper-nickel nanoneedles were designed for electrochemical reduction of CO2. The nickel was favorable for converting CO2 to CO, while copper can promote C-C coupling reaction. Due to their tandem electrocatalysis, the ethanol selectivity was significantly enhanced. The Faradaic efficiency for ethanol production was 65% for copper-nickel nanoneedle foam at -0.6 V (vs Ag/AgCl), which was further increased to 73% after hydrophobic modification.
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