A highly active defect engineered Cl-doped carbon catalyst for the Nreduction reaction

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

2 Scopus Citations
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Author(s)

  • Minxue Huang
  • Shipeng Gong
  • Sini Wang
  • Kang Yang
  • Shi Chen
  • And 3 others
  • Changlai Wang
  • Xiangkai Kong
  • Qianwang Chen

Detail(s)

Original languageEnglish
Pages (from-to)5807-5814
Journal / PublicationJournal of Materials Chemistry A
Volume9
Issue number9
Online published24 Dec 2020
Publication statusPublished - 7 Mar 2021

Abstract

eNRR is a promisingly environment-friendly strategy to obtain ammonia under ambient conditions. For metal-based catalysts, the competitive adsorption of Hover Nremains the primary hurdle for high ammonia yield and faradaic efficiency. Carbon-based metal-free catalysts attract our attention for the potential of being promising NRR catalysts due to their natural low HER activity. In this study, we prepared a modified Zn-based metal-organic framework (Zn-BTC) decorated with Cl ions by simply adding NaCl in the synthetic process. The existence of Cl ions in the framework contributes to the generation of large pores during thermolysis. Moreover, -Cl and -COCl species were formed in situ and connected with carbon atoms in the defect area. Benefitting from such a structure, this catalyst achieves a high ammonia yield rate of 103.96 μg h−1 mgcat−1 and a faradaic efficiency of 21.71% at room temperature. Theoretical results also proved that the newly produced -COCl and -Cl functional groups could attract more electrons from adjacent carbon atoms due to their stronger electronegativity, thus improving its affinity towards Nwhile lowering the HER activity as reactive sites.

Citation Format(s)

A highly active defect engineered Cl-doped carbon catalyst for the Nreduction reaction. / Huang, Minxue; Gong, Shipeng; Wang, Sini; Yang, Kang; Chen, Shi; Wang, Changlai; Kong, Xiangkai; Chen, Qianwang.

In: Journal of Materials Chemistry A, Vol. 9, No. 9, 07.03.2021, p. 5807-5814.

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