Single-Atom Rh1 Alloyed Co for Urea Electrosynthesis from CO2 and NO3 -

被引：0
|
作者：
Wan, Yuying [1 ]
Zhang, Zhuoyan [1 ]
Qian, Jinmei [1 ]
Wei, Yicheng [1 ]
Kang, Jilong [1 ]
Chu, Ke [1 ]
机构：
[1] Lanzhou Jiaotong Univ, Sch Mat Sci & Engn, Lanzhou 730070, Peoples R China
来源：
NANO LETTERS | 2024年 / 24卷 / 35期
基金：
中国国家自然科学基金;
关键词：
single-atom alloys; urea electrosynthesis; in situ spectroscopic measurements; theoretical calculations; NITRATE;
D O I：
10.1021/acs.nanolett.4c02767
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Single-atom Rh-1 alloyed Co (Rh1Co) is explored as an efficient catalyst for urea electrosynthesis via coelectrolysis of CO2 and NO3- (UECN). Theoretical calculations and in situ spectroscopic measurements unravel the synergetic effect of Co and Rh-1 in promoting the UECN process, where the Rh-1 site activates NO3- to form *NH2, while the Co site activates CO2 to form *CO. The formed *CO then desorbs from the Co site and transfers to the Rh-1 site, followed by continuous C-N coupling with *NH2 formed on the Rh-1 site to synthesize urea. Remarkably, Rh1Co assembled in a flow cell delivers the exceptional urea yield rate of 24.9 mmol h(-1) g(-1) and Faradaic efficiency of 51.1%, outperforming most previously reported UECN catalysts.
引用
收藏
页码：10928 / 10935
页数：8
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