articleAdvanced Functional MaterialsJan 10, 2026Closed access

Synergistic Dual‐Atom Cu Nanozyme for Efficient Electrocatalytic Nitrate Reduction to Ammonia

MWMengxuan WangWSWanchao SongHZHua ZouGLGuoshuai LiuSYShijie You

Jiangnan University · Harbin Institute of Technology

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Abstract

ABSTRACT The electrocatalytic nitrate reduction reaction (NO 3 RR) to ammonia (NH 3 ) represents a promising strategy for sustainable NH 3 synthesis while mitigating nitrate contamination. However, challenges remain for sluggish kinetics and poor selectivity due to inefficient nitrite (NO 2 − ) activation and inadequate generation/utilization of reactive hydrogen species (H*). To address these issues, we design a dual‐atom copper nanozyme anchored on hollow carbon spheres (Cu 2 ‐S 1 N 4 /HCS) by mimicking the enzymatic architecture of copper‐containing nitrite reductases (Cu‐NIRs). Experimental and theoretical investigations reveal that the Cu‐S 1 N 2 site facilitates water dissociation to generate H*, which…

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Topics & keywords

Topics
Keywords
  • Ammonia production
  • Catalysis
  • Deoxygenation
  • Ammonia
  • Nitrate
  • Nitrite
  • Faraday efficiency
  • Reversible hydrogen electrode
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