Li Jun, Zhao Donglin, Zhang Longcheng, Ren Yuchun, Yue Luchao, Li Zerong, Sun Shengjun, Luo Yongsong, Chen Quanying, Li Tingshuai, Dong Kai, Liu Qian, Kong Qingquan, Sun Xuping
Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu 610054, Sichuan, China.
Institute for Advanced Study, Chengdu University, Chengdu 610106, Sichuan, China.
J Colloid Interface Sci. 2023 Jan;629(Pt A):805-812. doi: 10.1016/j.jcis.2022.09.016. Epub 2022 Sep 7.
Direct electrocatalytic reduction of nitrate (NO) is an efficient route to simultaneously synthesize ammonia (NH) and remove NO pollutants under ambient conditions, however, it is hindered by the lack of efficient and stable catalysts. Herein, a self-supported spinel-type MnCoO nanowire array is demonstrated for exclusively catalyzing the conversion of NO to NH, achieving a high Faradic efficiency of 97.1% and a large NH yield of 0.67 mmol h cm. Furthermore, density functional analysis reveals that MnCoO (220) surface has high activity for NO reduction with a low energy barrier of 0.46 eV for *NO to *NOH.
直接电催化还原硝酸盐（NO）是在环境条件下同时合成氨（NH₃）和去除NO污染物的有效途径，然而，它受到缺乏高效稳定催化剂的阻碍。在此，展示了一种自支撑尖晶石型MnCoO₂纳米线阵列专门催化NO转化为NH₃，实现了97.1%的高法拉第效率和0.67 mmol h⁻¹ cm⁻²的高NH₃产率。此外，密度泛函分析表明，MnCoO₂（220）表面对NO还原具有高活性，NO到NOH的低能垒为0.46 eV。
