Graphdiyne-based metal atomic catalysts for synthesizing ammonia

Huidi Yu, Yurui Xue, Lan Hui, Chao Zhang, Yan Fang, Yuxin Liu, Xi Chen, Danyan Zhang, Bolong Huang, Yuliang Li

Research output: Journal article publicationJournal articleAcademic researchpeer-review

33 Citations (Scopus)

Abstract

Development of novel catalysts for nitrogen reduction at ambient pressures and temperatures with ultrahigh ammonia (NH3) yield and selectivity is challenging. In this work, an atomic catalyst with separated Pd atoms on graphdiyne (Pd-GDY) was synthesized, which shows fascinating electrocatalytic properties for nitrogen reduction. The catalyst has the highest average NH3 yield of 4.45 ± 0.30 mgNH3 mgPd-1 h-1, almost tens of orders larger than for previously reported catalysts, and 100% reaction selectivity in neutral media. Pd-GDY exhibits almost no decreases in NH3 yield and Faradaic efficiency. Density functional theory calculations show that the reaction pathway prefers to perform at the (Pd, C1, C2) active area because of the strongly coupled (Pd, C1, C2), which elevates the selectivity via enhanced electron transfer. By adjusting the p-d coupling accurately, reduction of self-activated nitrogen is promoted by anchoring atom selection, and side effects are minimized.

Original languageEnglish
Article numbernwaa213
JournalNational Science Review
Volume8
Issue number8
DOIs
Publication statusPublished - 1 Aug 2021

Keywords

  • ammonia
  • atomic catalyst
  • graphdiyne
  • nitrogen reduction reaction
  • two-dimensional carbon material

ASJC Scopus subject areas

  • General

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