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- Title
Generating Defect‐Rich Bismuth for Enhancing the Rate of Nitrogen Electroreduction to Ammonia.
- Authors
Wang, Yue; Shi, Miao‐miao; Bao, Di; Meng, Fan‐lu; Zhang, Qi; Zhou, Yi‐tong; Liu, Kai‐hua; Zhang, Yan; Wang, Jia‐zhi; Chen, Zhi‐wen; Liu, Da‐peng; Jiang, Zheng; Luo, Mi; Gu, Lin; Zhang, Qing‐hua; Cao, Xing‐zhong; Yao, Yao; Shao, Min‐hua; Zhang, Yu; Zhang, Xin‐Bo
- Abstract
The electrochemical N2 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 N2 reduction electrocatalyst via a low‐temperature plasma bombardment approach. When exclusively using 1H NMR measurements with N2 gas as a quantitative testing method, the defect‐rich Bi(110) nanoplates achieved a 15NH3 production rate of 5.453 μg mgBi−1 h−1 and a Faradaic efficiency of 11.68 % at −0.6 V vs. RHE in aqueous solution at ambient conditions.
- Subjects
ELECTROLYTIC reduction; BISMUTH; AQUEOUS solutions; AMMONIA; NITROGEN; ADATOMS
- Publication
Angewandte Chemie, 2019, Vol 131, Issue 28, p9564
- ISSN
0044-8249
- Publication type
Article
- DOI
10.1002/ange.201903969