ACS Sustainable Chemistry & Engineering, Journal Year: 2024, Volume and Issue: 12(44), P. 16320 - 16328

Published: Oct. 22, 2024

Electrocatalytic nitrate reduction reaction (ENO3RR) to NH3 provides an appealing route valorize pollutants needed close the nitrogen cycle. The development of metal-free carbon catalysts with high stability and well-developed active sites for ENO3RR is highly desirable, while role structural defects (such as vacancies or functional groups) on electrosynthesis not fully understood. Herein, we developed a group carbon-based regulated quaternary-N N vacancies, effect dual defect process was systematically investigated. as-prepared NHC-1000 catalyst atomic-level engineered exhibited Faradaic efficiency 91.2% associated yield rate 2.6 mmol h–1 g–1 at –0.5 V (vs RHE), better than most reported electrocatalysts. According structure characterization theoretical calculations, yielded dependent defective involved catalytic sites. moiety facilitated potential-determining step *NO protonation *NHO further contributed formation *NH2 intermediates by synergistic action N-vacancies, which enhanced NO3– activity effectively. This work fundamental principle deeper understanding designing advanced engineering applied in

Language: Английский