Mo2C embedded on nitrogen-doped carbon toward electrocatalytic nitrogen reduction to ammonia under ambient conditions

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

24 Scopus Citations
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Author(s)

  • Jue Hu
  • Chengxu Zhang
  • Altair T.F. Cheung
  • Yue Zhang
  • Lifen Liu

Detail(s)

Original languageEnglish
Pages (from-to)13011-13019
Journal / PublicationInternational Journal of Hydrogen Energy
Volume46
Issue number24
Online published15 Feb 2021
Publication statusPublished - 6 Apr 2021

Abstract

Electrochemical nitrogen reduction reaction (e-NRR) is an attractive prospect for ammonia production under mild conditions using renewable energy. However, developing efficient and stable electrocatalysts for driving e-NRR remains a great challenge. Herein, inspired by the biological nitrogen fixation via active Mo-nitrogenase, molybdenum carbide on N-doped porous carbon (Mo2C/NC) derived from Mo/Zn-ZIFs was developed for the first time, as an efficient e-NRR electrocatalyst under ambient conditions. In 0.1 M Na2SO4 electrolyte, the Mo2C/NC catalyst achieved a maximum NH3 yield rate of 70.6 μmol h−1 gcat.−1 and a faradaic efficiency of 12.3% at −0.2 V vs. RHE. Additionally, Mo2C/NC displayed favorable electrochemical selectivity and durability during the longtime electrolysis, attributed to the structural and electrochemical stability of Mo2C and ZIFs-derived carbon framework. This work provides new perspectives upon metal carbides and their compounds as catalysts for efficient e-NRR.

Research Area(s)

  • Electrocatalysis, High faradaic efficiency, Mo2C, N-doped porous carbon, Nitrogen reduction reaction

Citation Format(s)

Mo2C embedded on nitrogen-doped carbon toward electrocatalytic nitrogen reduction to ammonia under ambient conditions. / Zhang, Yizhen; Hu, Jue; Zhang, Chengxu et al.
In: International Journal of Hydrogen Energy, Vol. 46, No. 24, 06.04.2021, p. 13011-13019.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review