인문학
사회과학
자연과학
공학
의약학
농수해양학
예술체육학
복합학
지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
초록·키워드
Electrocatalytic nitrogen reduction reaction (NRR) represents a promising sustainable approach for NH<sub>3</sub> synthesis. However, the poor NRR performance of electrocatalysts is a great challenge at this stage, mainly owing to their low activity and the competitive hydrogen evolution reaction (HER). Herein, 2D ferric covalent organic framework/MXene (COF-Fe/MXene) nanosheets with controllable hydrophobic behaviors are successfully prepared via a multiple-in-one synthetic strategy. The boosting hydrophobicity of COF-Fe/MXene can effectively repel water molecules to inhibit the HER for enhanced NRR performances. By virtue of the ultrathin nanostructure, well-defined single Fe sites, nitrogen enrichment effect, and high hydrophobicity, the 1H,1H,2H,2H-perfluorodecanethiol modified COF-Fe/MXene hybrid shows a NH<sub>3</sub> yield of 41.8 µg h<sup>-1</sup> mg<sub>cat.</sub> <sup>-1</sup> and a Faradaic efficiency of 43.1% at -0.5 V versus RHE in a 0.1 m Na<sub>2</sub> SO<sub>4</sub> water solution, which are vastly superior to the known Fe-based catalysts and even to the noble metal catalysts. This work provides a universal strategy to design and synthesis of non-precious metal electrocatalysts for high-efficiency N<sub>2</sub> reduction to NH<sub>3</sub> .
#Faraday efficiency
#Catalysis
#Redox
#Covalent organic framework
#Ferric
#Covalent bond
#Reversible hydrogen electrode
#Noble metal
#Ammonia
#Electrochemistry
#Chemical engineering
#Materials science
#Chemistry
#Nanostructure
#Metal-organic framework
#Inorganic chemistry
#Nanotechnology
#Electrode
#Organic chemistry
#Physical chemistry
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