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Environmental sustainability

Breakthrough in Sustainable Ammonia Production

Strategic Insights

— 1 min read

Research from the Chinese Academy of Sciences has made significant strides in the production of sustainable ammonia using electrocatalytic nitrogen reduction reaction (ENRR). A novel Cu14(dppy)7(dmbt)3 nanocluster, supported on graphene, has been synthesized and tested as a high-efficiency ENRR catalyst. This breakthrough has the potential to transform the production of ammonia, a crucial component in fertilizers and industrial processes.

Key Takeaways:

  • The researchers synthesized a Cu14(dppy)7(dmbt)3 nanocluster (Cu14 NC) and investigated its potential as a high-efficiency ENRR catalyst by supporting it on graphene.
  • The Cu14 NCs supported on graphene (Cu14 G) achieved an outstanding ammonia yield of 3.58 μg h-1 cm-2 with a faradaic efficiency (FE) of 55.96% at a low overpotential of -0.8 V vs. RHE in 0.1 M KOH (H-cell setup).
  • The Cu14 G catalyst exhibited exceptional long-term stability, suppressing hydrazine formation and outperforming Cu14 NCs on TiO2, CeO2, graphene oxide, MXene, or unsupported alternatives.
  • The researchers concluded that the enhanced performance arises from graphene's superior conductivity and its robust contacts with the chelating structured Cu14 NCs, which stabilize essential intermediates, facilitate charge transfer, and inhibit the competing hydrogen evolution pathway.
  • The findings underscore the capacity of copper cluster catalysts to transform nitrogen fixation, facilitating decentralised, sustainable ammonia production.
  • The research was financially supported by the National Natural Science Foundation of China (NSFC) and has been peer-reviewed.

Statistics:

  • Ammonia yield of 3.58 μg h-1 cm-2 achieved by Cu14 G catalysts
  • 55.96% faradaic efficiency (FE) at a low overpotential of -0.8 V vs. RHE
  • Superior conductivity of graphene contributes to enhanced performance
  • Cu14 G catalyst exhibits exceptional long-term stability
  • Enhanced performance arises from chelating structured Cu14 NCs and graphene interactions

Sources:

  • A Cu 14 (Dppy) 7 (Dmbt) 3 Cluster of Chelating Structure for Enhanced Electrocatalytic Nitrogen Reduction To Ammonia. Journal of Materials Chemistry A, 2025.
  • Zhixun Luo, Chinese Academy of Sciences, Institute of Chemistry, Beijing Natl Lab Mol Sci Bnlms, State Key Lab Struct Chem Unstable & Stable Specie, Beijing 100190, People's Republic of China.
  • NewsRx. Study Results from Chinese Academy of Sciences in the Area of Sustainability Research Reported [A Cu 14 (Dppy) 7 (Dmbt) 3 Cluster of Chelating Structure for Enhanced Electrocatalytic Nitrogen Reduction To Ammonia]. Ecology, Environment & Conservation. October 17, 2025; p 1232.

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