Effect of the coordination environment of Cu in Cu2O on the electroreduction of CO2 to ethylene,Green Chemistry

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Effect of the coordination environment of Cu in Cu2O on the electroreduction of CO2 to ethylene
Green Chemistry ( IF 9.3 ) Pub Date : 2020-09-08 , DOI: 10.1039/d0gc02842h
Yahui Wu _{1,

2,

3,

4,

5} , Chunjun Chen _{1,

2,

3,

4,

5} , Xupeng Yan _{1,

2,

3,

4,

5} , Shoujie Liu _{6,

7,

8} , Mengen Chu _{8,

9,

10,

11,

12} , Haihong Wu _{8,

9,

10,

11,

12} , Jun Ma _{1,

2,

3,

4,

5} , Buxing Han _{1,

2,

3,

4,

5}

Affiliation

Cuprous oxide catalysts have attracted much attention because they exhibited high selectivity of C2+ products in CO₂ electroreduction, but the effect of the structure of catalysts on the reaction needs to be studied further. Herein, we studied the effect of the coordination number (CN) of Cu–Cu and Cu–O in Cu₂O on the catalytic performance of CO₂ electrocatalytic reduction to C₂H₄. It was demonstrated that Cu–Cu CN and Cu–O CN, which could be tuned by changing the crystal surface and size of Cu₂O, influenced the current density and faradaic efficiency (FE) of C₂H₄ significantly. At suitable CNs, the FE of C₂H₄ could reach 50.6% with a current density of 24.5 mA cm⁻².

中文翻译：

Cu2O中Cu的配位环境对CO2向乙烯电还原的影响

氧化亚铜催化剂由于在CO ₂电还原中表现出高的C2 +产物选择性而备受关注，但还需要进一步研究催化剂结构对反应的影响。本文中，我们研究了Cu ₂ O中Cu–Cu和Cu–O的配位数（CN）对CO ₂电催化还原为C ₂ H ₄的催化性能的影响。结果表明，可以通过改变Cu ₂ O的晶体表面和大小来对其进行调节的Cu–Cu CN和Cu–O CN显着影响了C ₂ H ₄的电流密度和法拉第效率。在合适的CN处，FE为C ₂H ₄的电流密度为24.5 mA cm ^-2时可以达到50.6％。

更新日期：2020-10-05

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