Customizable CO2 Electroreduction to C1 or C2+ Products through Cuy/CeO2 Interface Engineering

作者：Jinlong Yin, Zeyu Gao, Fengyuan Wei, Chang Liu, Jun Yan Gong, Jinmeng Li, Wenzheng Li, Li Xiao, Gongwei Wang, Juntao Lu, Lin Zhuang · 发表于：ACS Catalysis · 年份：2022 · DOI：10.1021/acscatal.1c04714 · 被引用次数：112 · 研究领域：CO2 Reduction Techniques and Catalysts、Ionic liquids properties and applications、Advanced Thermoelectric Materials and Devices

Cu-catalyzed CO 2 electroreduction can produce various hydrocarbons and oxygenates. However, it suffers from low activity and poor selectivity. Herein, Cu-decorated CeO 2 composites (Cu y /CeO 2 ) with distinct interfacial characteristics were fabricated through a highly controllable synthesis, based on chemical prelithiation of CeO 2 and then galvanic displacement with Cu. The Cu decoration induced a strong-binding site for CO 2 adsorption at the Cu and CeO 2 interface, facilitating the CO 2 activation and conversion to the *CO intermediate on the nearby Cu surface. Selective CO 2 conversion to C 1 or C 2+ products was customized by adjusting the Cu decoration amount. With the increase in the Cu loading, the C 1 and C 2+ products exhibited a declining and volcano-shaped trend, showing a maximum faradaic efficiency of 70 and 63%, respectively. In situ infrared and Raman spectroscopy revealed that the reduction pathway depended on the relative ratio of the low-frequency band *CO LFB to the high-frequency band *CO HFB . Our findings may contribute to the rational design of heterostructured catalysts toward CO 2 electroreduction.