Research Article


2020, 13(3): 768–774


Multi-shelled CuO microboxes for carbon dioxide reduction to ethylene

Dongxing Tan1,2, Jianling Zhang1,2,3 (*), Lei Yao4, Xiuniang Tan1,2, Xiuyan Cheng1,2, Qiang Wan1,2, Buxing Han1,2,3, Lirong Zheng4, and Jing Zhang4

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1 Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Colloid, Interface and Chemical Thermodynamics, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
2 School of Chemical Sciences, University of Chinese Academy of Sciences, Beijing 100049, China
3 Physical Science Laboratory, Huairou National Comprehensive Science Center, Beijing 101400, China
4 Beijng Synchrotron Radiation Facility (BSRF), Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China

Keywords: multi-shelled CuO microboxes, nanocrystals, CO2 reduction, C2H4
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  • Abstract
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The electroreduction of CO2 to valuable chemicals and fuels offers an effective mean for energy storage. Although CO2 has been efficiently converted into C1 products (e.g., carbon monoxide, formic acid, methane and methanol), its convention into high value-added multicarbon hydrocarbons with high selectivity and activity still remains challenging. Here we demonstrate the formation of multi-shelled CuO microboxes for the efficient and selective electrocatalytic CO2 reduction to C2H4. Such a structure favors the accessibility of catalytically active sites, improves adsorption of reaction intermediate (CO), inhibits the diffusion of produced OH− and promotes C–C coupling reaction. Owing to these unique advantages, the multi-shelled CuO microboxes can effectively convert CO2 into C2H4 with a maximum faradaic efficiency of 51.3% in 0.1 M K2SO4. This work provides an effective way to improve CO2 reduction efficiency via constructing micro- and nanostructures of electrocatalysts.
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Multi-shelled CuO microboxes for carbon dioxide reduction to ethylene. Nano Res. 2020, 13(3): 768–774

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