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• W4310110595 endingPage "15156" @default.
• W4310110595 startingPage "15146" @default.
• W4310110595 abstract "Bimetallic electrocatalysts have emerged as a viable strategy to tune the electrocatalytic CO2 reduction reaction (eCO2RR) for the selective production of valuable base chemicals and fuels. However, obtaining high product selectivity and catalyst stability remain challenging, which hinders the practical application of eCO2RR. In this work, it was found that a small doping concentration of tin (Sn) in copper oxide (CuO) has profound influence on the catalytic performance, boosting the Faradaic efficiency (FE) up to 98% for carbon monoxide (CO) at −0.75 V versus RHE, with prolonged stable performance (FE > 90%) for up to 15 h. Through a combination of ex situ and in situ characterization techniques, the in situ activation and reaction mechanism of the electrocatalyst at work was elucidated. In situ Raman spectroscopy measurements revealed that the binding energy of the crucial adsorbed *CO intermediate was lowered through Sn doping, thereby favoring gaseous CO desorption. This observation was confirmed by density functional theory, which further indicated that hydrogen adsorption and subsequent hydrogen evolution were hampered on the Sn-doped electrocatalysts, resulting in boosted CO formation. It was found that the pristine electrocatalysts consisted of CuO nanoparticles decorated with SnO2 domains, as characterized by ex situ high-resolution scanning transmission electron microscopy and X-ray photoelectron spectroscopy measurements. These pristine nanoparticles were subsequently in situ converted into a catalytically active bimetallic Sn-doped Cu phase. Our work sheds light on the intimate relationship between the bimetallic structure and catalytic behavior, resulting in stable and selective oxide-derived Sn-doped Cu electrocatalysts." @default.
• W4310110595 created "2022-11-30" @default.
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• W4310110595 date "2022-11-28" @default.
• W4310110595 modified "2023-10-18" @default.
• W4310110595 title "Near-Unity Electrochemical CO₂ to CO Conversion over Sn-Doped Copper Oxide Nanoparticles" @default.
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• W4310110595 doi "https://doi.org/10.1021/acscatal.2c04279" @default.
• W4310110595 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/36570083" @default.
• W4310110595 hasPublicationYear "2022" @default.
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