期刊
NANO RESEARCH
卷 14, 期 11, 页码 4093-4099出版社
TSINGHUA UNIV PRESS
DOI: 10.1007/s12274-021-3348-5
关键词
nitrogen reduction reaction; MoS2; electrocatalyst; nitrogen-fixing
类别
资金
- Beijing Municipal High Level Innovative Team Building Program [IDHT-20180504]
- Beijing Outstanding Young Scientists Program [BJJWZYJH01201910005017]
- National Natural Science Foundation of China [51801006, 21805004, 21671011, 21872001]
- Beijing Natural Science Foundation [KZ201710005002, 2192005]
- Beijing Municipal Science and Natural Science Fund Project [KM201910005016]
- China Postdoctoral Science Foundation [2018M641133]
- Beijing Postdoctoral Research Foundation [2018-ZZ-021]
- Chaoyang District Postdoctoral Research Foundation [2018-ZZ-026]
Experimental and theoretical studies have shown that V-doped MoS2 exhibits better nitrogen adsorption and activation, while Fe-doped MoS2 achieves the highest ammonia yield in experiments. Thus, achieving an appropriate balance between nitrogen adsorption, activation, and desorption is crucial for obtaining highly efficient electrocatalysts for NRR.
Electrochemical reduction of nitrogen to ammonia under mild conditions provides an intriguing approach for energy conversion. A grand challenge for electrochemical nitrogen reduction reaction (NRR) is to design a superior electrocatalyst to obtain high performance including high catalytic activity and selectivity. In the NRR process, the three most important steps are nitrogen adsorption, nitrogen activation, and ammonia desorption. We take MoS2 as the research object and obtain catalysts with different electronic densities of states through the doping of Fe and V, respectively. Using a combination of experiments and theoretical calculations, it is demonstrated that V-doped MoS2 (MoS2-V) shows better nitrogen adsorption and activation, while Fe-doped MoS2 (MoS2-Fe) obtains the highest ammonia yield in experiments (20.11 mu g center dot h(-1)center dot mg(-1)cat.) due to its easier desorption of ammonia. Therefore, an appropriate balance between nitrogen adsorption, nitrogen activation, and ammonia desorption should be achieved to obtain highly efficient NRR electrocatalysts.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据