Intermediates Adsorption Engineering of CO2 Electroreduction Reaction in Highly Selective Heterostructure Cu‐Based Electrocatalysts for CO Production |
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Authors: | Hao Yang Yu‐wen Hu Jun‐jie Chen M‐Sadeeq Balogun Ping‐ping Fang Shanqing Zhang Jian Chen Yexiang Tong |
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Institution: | Hao Yang,Yu‐wen Hu,Jun‐jie Chen,M.‐Sadeeq (Jie Tang) Balogun,Ping‐ping Fang,Shanqing Zhang,Jian Chen,Yexiang Tong |
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Abstract: | The challenge in the artificial CO2 reduction to fuel is achieving high selective electrocatalysts. Here, a highly selective Cu2O/CuO heterostructure electrocatalyst is developed for CO2 electroreduction. The Cu2O/CuO nanowires modified by Ni nanoparticles exhibit superior catalytic performance with high faradic efficiency (95% for CO). Theoretical and experimental analyses show that the hybridization of Cu2O/CuO nanowires and Ni nanoparticles can not only adjust the d‐band center of electrocatalysts to enhance the intrinsic catalytic activity but also improve the adsorption of COOH* intermediates and suppress the hydrogen evolution reaction to promote the CO conversion efficiency during CO2 reduction reaction. An in situ Raman spectroscopic study further confirms the existence of COOH* species and the engineering intermediates adsorption. This work offers new insights for facile designing of nonprecious transition metal compound heterostructure for CO2 reduction reaction through adjusting the reaction pathway. |
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Keywords: | CO2 reduction reaction Cu2O nanowires heterostructures in situ Raman intermediates |
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