化学
催化作用
格式化
法拉第效率
电化学
无机化学
化学工程
合成气
碳纤维
电极
物理化学
有机化学
材料科学
复合材料
复合数
工程类
作者
Haiping Xu,J. Wang,Haiying He,Inhui Hwang,Yuzi Liu,Chengjun Sun,Haozhe Zhang,Tao Li,John V. Muntean,Tao Xu,Di‐Jia Liu
摘要
Electrochemical reduction of carbon dioxide to organic chemicals provides a value-added route for mitigating greenhouse gas emissions. We report a family of carbon-supported Sn electrocatalysts with the tin size varying from single atom, ultrasmall clusters to nanocrystallites. High single-product Faradaic efficiency (FE) and low onset potential of CO2 conversion to acetate (FE = 90% @ −0.6 V), ethanol (FE = 92% @ −0.4 V), and formate (FE = 91% @ −0.6 V) were achieved over the catalysts of different active site dimensions. The CO2 conversion mechanism behind these highly selective, size-modulated p-block element catalysts was elucidated by structural characterization and computational modeling, together with kinetic isotope effect investigation.
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