Rare-earth La-doped VS2-x for electrochemical nitrate reduction to ammonia

被引：35
|
作者：
Wang, Guohui [1 ]
Shen, Peng [1 ]
Chen, Kai [1 ]
Guo, Yali [1 ]
Zhao, Xiaolin [2 ]
Chu, Ke [1 ]
机构：
[1] Lanzhou Jiaotong Univ, Sch Mat Sci & Engn, Lanzhou 730070, Peoples R China
[2] Beijing Inst Technol, Natl Engn Lab Elect Vehicles, Beijing 100081, Peoples R China
来源：
INORGANIC CHEMISTRY FRONTIERS | 2023年 / 10卷 / 07期
关键词：
S-VACANCIES;
D O I：
10.1039/d2qi02757g
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
We report rare-earth La-doped VS2-x enriched with S-vacancies (La-VS2-x) towards the electrochemical nitrate reduction to ammonia (NO3RR), which shows a maximum NH3-faradaic efficiency of 96.6% with a corresponding NH3 yield rate of 11.3 mg h(-1) cm(-2) at -0.6 V vs. RHE. Theoretical computations unveil that La-dopants and S-vacancies synergistically promote NO3- activation, suppress hydrogen evolution and lower the energetic barriers, leading to the enhanced NO3RR activity and selectivity of La-VS2-x.
引用
收藏
页码：2014 / 2021
页数：8
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