期刊
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
卷 619, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.colsurfa.2021.126529
关键词
Electrocatalyst; Nitrogen reduction reaction; Zeolitic-imidazole framework-71; Ball-like nanoflower; Non-precious metal
资金
- Natural Science Foundation of Shandong Province [ZR2020MB143]
- Tiandi Science and Technology Innovation and Entrepreneurship Special Funding Project [2018TDMS006]
The study introduces a MoS2@ZIF-71 electrocatalyst that can effectively inhibit the hydrogen evolution reaction and enhance the yield and efficiency of nitrogen reduction reaction, thus promoting the development of electrochemical ammonia under ambient conditions.
It is urgently needed to develop affordable non-precious metal catalysts which can inhibit the hydrogen evolution reaction (HER), achieving a large NH3 yield with a high Faraday Efficiency (FE) for electrochemical nitrogen reduction reaction (NRR). The MoS2@ZIF-71 electrocatalyst comprises a complete encapsulation of zeoliticimidazole framework-71 over an array of ball-like MoS2 nanoflower. The interface engineering method was used to achieve the desired interface and structure with the enhanced NRR catalytic activity. In this model catalyst@MOF interface, ZIF-71 coating concentrates N2 molecules at the MoS2-ZIF interface through their sorption within the inherent micropores and serves as a hydrophobic barrier to suppress HER, ball-like MoS2 nanoflower with the unique ultrathin subunits provides the rich active edges and sites for NRR. MoS2@ZIF-71 electrocatalyst exhibits a large NH3 yield rate of 56.69 ?g h-1 mg- 1MoS2 and a high FE of 30.91% at -0.2 V versus RHE under ambient conditions. This research will promote the further development of electrochemical ammonia under ambient conditions.
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