Operando evidence of Cu+ stabilization via a single-atom modifier for CO2 electroreduction
作者： Wei Zhang , Peng He , Chao Wang , Tao Ding , Tao Chen
DOI: 10.1039/D0TA08369K
关键词:
摘要: Oxide-derived Cu materials are most commonly used as electrocatalysts for the carbon dioxide reduction reaction (CO2RR). Previous studies have proved that Cu+ and residual subsurface oxygen species can enhance CO2RR activity; however stable presence of remains a subject debate. Here, we design strategy single-atom Sn anchored on Cu2O nanosheets to stabilize key electroreduction CO2. Operando synchrotron X-ray absorption spectroscopy statistics analysis distinguish active reduced species, reveal constructed Sn–O–Cu sites with charge transfer significantly resistance copper oxides reduction. infrared suggests survival catalyst surface promotes adsorption *CO during CO2RR, leading obvious improvement CO2-to-CO conversion. Our results demonstrate role single-atom-modifier in both stabilizing enhancing selectivity oxide-derived catalysts.
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