Premium
Generating Defect‐Rich Bismuth for Enhancing the Rate of Nitrogen Electroreduction to Ammonia
Author(s) -
Wang Yue,
Shi Miaomiao,
Bao Di,
Meng Fanlu,
Zhang Qi,
Zhou Yitong,
Liu Kaihua,
Zhang Yan,
Wang Jiazhi,
Chen Zhiwen,
Liu Dapeng,
Jiang Zheng,
Luo Mi,
Gu Lin,
Zhang Qinghua,
Cao Xingzhong,
Yao Yao,
Shao Minhua,
Zhang Yu,
Zhang XinBo,
Chen Jingguang G.,
Yan Junmin,
Jiang Qing
Publication year - 2019
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201903969
Subject(s) - electrocatalyst , bismuth , faraday efficiency , aqueous solution , electrochemistry , ammonia , nitrogen , selectivity , ammonia production , materials science , inorganic chemistry , electrode , chemistry , chemical engineering , catalysis , metallurgy , organic chemistry , engineering
The electrochemical N 2 fixation, which is far from practical application in aqueous solution under ambient conditions, is extremely challenging and requires a rational design of electrocatalytic centers. We observed that bismuth (Bi) might be a promising candidate for this task because of its weak binding with H adatoms, which increases the selectivity and production rate. Furthermore, we successfully synthesized defect‐rich Bi nanoplates as an efficient noble‐metal‐free N 2 reduction electrocatalyst via a low‐temperature plasma bombardment approach. When exclusively using 1 H NMR measurements with N 2 gas as a quantitative testing method, the defect‐rich Bi(110) nanoplates achieved a 15 NH 3 production rate of 5.453 μg mg Bi −1 h −1 and a Faradaic efficiency of 11.68 % at −0.6 V vs. RHE in aqueous solution at ambient conditions.