催化作用
亚硝酸盐
氨
钴
化学
无机化学
氨生产
Atom(片上系统)
硝酸盐
有机化学
计算机科学
嵌入式系统
作者
Hongyan Zhao,Jiaqi Xiang,Zeyi Sun,Shiyao Shang,Ke Chu
出处
期刊:ACS Sustainable Chemistry & Engineering
[American Chemical Society]
日期:2024-02-02
卷期号:12 (7): 2783-2789
被引量:16
标识
DOI:10.1021/acssuschemeng.3c07388
摘要
Electrochemical nitrite-to-ammonia reduction (NO2RR) holds great promise for converting harmful NO2– into valuable NH3. Herein, we develop Co single atoms dispersed on a C3N4 substrate (Co1/C3N4) as an efficient catalyst toward the NO2RR. Experimental and theoretical investigations reveal that single-atom Co sites can effectively active NO2– and optimize the formation energy of the key *NOH intermediate to promote the NO2– → NH3 energetics. Remarkably, Co1/C3N4 equipped in a flow cell delivers the exceptional NH3–Faradaic efficiency of 97.9% and NH3 yield rate of 1080.3 μmol h–1cm–2 at an industrial-level current density of 355 mA cm–2, along with a long-term durability of 100 h of electrolysis, showing the considerable potential for practical NH3 electrosynthesis.
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