Volume 133, Issue 9 pp. 4929-4935
Forschungsartikel

Coupling of Cu(100) and (110) Facets Promotes Carbon Dioxide Conversion to Hydrocarbons and Alcohols

Dazhong Zhong

Dazhong Zhong

Key Laboratory for Green Chemical Technology of Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Weijin Road 92, Tianjin, 300072 China

College of Chemistry and Chemical Engineering, Taiyuan University of Technology, Shanxi Key Laboratory of Gas Energy Efficient and Clean Utilization, Yingze West Street 79, Taiyuan, 030024 Shanxi, China

These authors contributed equally to this work.

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Prof. Dr. Zhi-Jian Zhao

Prof. Dr. Zhi-Jian Zhao

Key Laboratory for Green Chemical Technology of Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Weijin Road 92, Tianjin, 300072 China

These authors contributed equally to this work.

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Prof. Dr. Qiang Zhao

Prof. Dr. Qiang Zhao

College of Chemistry and Chemical Engineering, Taiyuan University of Technology, Shanxi Key Laboratory of Gas Energy Efficient and Clean Utilization, Yingze West Street 79, Taiyuan, 030024 Shanxi, China

These authors contributed equally to this work.

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Dongfang Cheng

Dongfang Cheng

Key Laboratory for Green Chemical Technology of Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Weijin Road 92, Tianjin, 300072 China

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Bin Liu

Bin Liu

Key Laboratory for Green Chemical Technology of Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Weijin Road 92, Tianjin, 300072 China

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Gong Zhang

Gong Zhang

Key Laboratory for Green Chemical Technology of Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Weijin Road 92, Tianjin, 300072 China

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Wanyu Deng

Wanyu Deng

Key Laboratory for Green Chemical Technology of Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Weijin Road 92, Tianjin, 300072 China

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Hao Dong

Hao Dong

Key Laboratory for Green Chemical Technology of Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Weijin Road 92, Tianjin, 300072 China

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Lei Zhang

Lei Zhang

Key Laboratory for Green Chemical Technology of Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Weijin Road 92, Tianjin, 300072 China

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Prof. Dr. Jingkun Li

Prof. Dr. Jingkun Li

Key Laboratory for Green Chemical Technology of Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Weijin Road 92, Tianjin, 300072 China

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Prof. Dr. Jinping Li

Corresponding Author

Prof. Dr. Jinping Li

College of Chemistry and Chemical Engineering, Taiyuan University of Technology, Shanxi Key Laboratory of Gas Energy Efficient and Clean Utilization, Yingze West Street 79, Taiyuan, 030024 Shanxi, China

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Prof. Dr. Jinlong Gong

Corresponding Author

Prof. Dr. Jinlong Gong

Key Laboratory for Green Chemical Technology of Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Weijin Road 92, Tianjin, 300072 China

Joint School of National University of Singapore and Tianjin University, International Campus of Tianjin University, Binhai New City, Fuzhou, 350207 China

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First published: 24 November 2020
Citations: 19

Abstract

Copper can efficiently electro-catalyze carbon dioxide reduction to C2+ products (C2H4, C2H5OH, n-propanol). However, the correlation between the activity and active sites remains ambiguous, impeding further improvements in their performance. The facet effect of copper crystals to promote CO adsorption and C−C coupling and consequently yield a superior selectivity for C2+ products is described. We achieve a high Faradaic efficiency (FE) of 87 % and a large partial current density of 217 mA cm−2 toward C2+ products on Cu(OH)2-D at only −0.54 V versus the reversible hydrogen electrode in a flow-cell electrolyzer. With further coupled to a Si solar cell, record-high solar conversion efficiencies of 4.47 % and 6.4 % are achieved for C2H4 and C2+ products, respectively. This study provides an in-depth understanding of the selective formation of C2+ products on Cu and paves the way for the practical application of electrocatalytic or solar-driven CO2 reduction.

Conflict of interest

The authors declare no conflict of interest.

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