Graphdiyne Interface Engineering: Highly Active and Selective Ammonia Synthesis

Yan Fang, Yurui Xue, Yongjun Li, Huidi Yu, Lan Hui, Yuxin Liu, Chengyu Xing, Chao Zhang, Danyan Zhang, Zhongqiang Wang, Xi Chen, Yang Gao, Bolong Huang, Yuliang Li

Research output: Journal article publicationJournal articleAcademic researchpeer-review

10 Citations (Scopus)

Abstract

A freestanding 3D graphdiyne–cobalt nitride (GDY/Co2N) with a highly active and selective interface is fabricated for the electrochemical nitrogen reduction reaction (ECNRR). Density function theory calculations reveal that the interface-bonded GDY contributes an unique p-electronic character to optimally modify the Co-N compound surface bonding, which generates as-observed superior electronic activity for NRR catalysis at the interface region. Experimentally, at atmospheric pressure and room temperature, the electrocatalyst creates a new record of ammonia yield rate (Y (Formula presented.)) and Faradaic efficiency (FE) of 219.72 μg h−1 mgcat. −1 and 58.60 %, respectively, in acidic conditions, higher than reported electrocatalysts. Such a catalyst is promising to generate new concepts, new knowledge, and new phenomena in electrocatalytic research, driving rapid development in the field of electrocatalysis.

Original languageEnglish
Pages (from-to)13021-13027
Number of pages7
JournalAngewandte Chemie - International Edition
Volume59
Issue number31
DOIs
Publication statusE-pub ahead of print - 24 Apr 2020

Keywords

  • 2D carbon allotropes
  • ammonia synthesis
  • graphdiyne
  • heterostructures
  • self-supporting electrocatalysts

ASJC Scopus subject areas

  • Catalysis
  • Chemistry(all)

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