中文版 | English
CSpace
Synergistic Modulation at Atomically Dispersed Fe/Au Interface for Selective CO2 Electroreduction
Shen, Xinyi1; Liu, Xiaokang1; Wang, Sicong1; Chen, Tao1,2; Zhang, Wei1; Cao, Linlin1; Ding, Tao1; Lin, Yue3; Liu, Dong1; Wang, Lan1,2
2021-01-13
摘要The electrocatalytic carbon dioxide reduction reaction (CO2RR) offers an attractive route to fuels and feedstocks from renewable energy. Gold is active for the electrochemical CO2RR to CO, while the competing hydrogen evolution reaction is unavoidable. Here, we report a synergistic strategy, via introducing atomically dispersed Fe to tune the electronic structure of the Au nanoparticle, to improve the CO selectivity. By using operando X-ray absorption and infrared spectroscopies, we reveal the dynamic structural evolution and the adsorption of reactant intermediates at the single-atom Fe-1/Au interface. During the reaction, the interaction between Fe and Au atoms becomes stronger, and the Fe-1/Au synergies affect the adsorption of reaction intermediates, thus improving the selectivity of CO up to 96.3% with a mass activity of 399 mA mg(-1). These results highlight the significant importance of synergistic modulation for advancing the single-atom decorated nanoparticle catalysis.
关键词Synergistic strategy CO2 electroreduction Operando XAFS Interfacial sites Dynamic structures
DOI10.1021/acs.nanolett.0c04291
发表期刊NANO LETTERS
ISSN1530-6984
卷号21期号:1页码:686-692
通讯作者Cao, Linlin(caolin@ustc.edu.cn) ; Zhang, Wei(zhangwei@cigit.ac.cn) ; Yao, Tao(yaot@ustc.edu.cn)
收录类别SCI
WOS记录号WOS:000611082000093
语种英语