articleNature CommunicationsApr 1, 2024GOLD OA

Defect-induced triple synergistic modulation in copper for superior electrochemical ammonia production across broad nitrate concentrations

BZBocheng ZhangZDZechuan DaiYCYanxu ChenMCMingyu ChengHZHuaikun Zhang

University of Science and Technology of China · Hefei National Center for Physical Sciences at Nanoscale

PubMed
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Abstract

Abstract Nitrate can be electrochemically degraded to produce ammonia while treating sewage while it remains grand challenge to simultaneously realize high Faradaic efficiency and production rate over wide-range concentrations in real wastewater. Herein, we report the defect-rich Cu nanowire array electrode generated by in-situ electrochemical reduction, exhibiting superior performance in the electrochemical nitrate reduction reaction benefitting from the triple synergistic modulation. Notably, the defect-rich Cu nanowire array electrode delivers current density ranging from 50 to 1100 mA cm −2 across wide nitrate concentrations (1–100 mM) with Faradaic efficiency over 90%. Operando Synchrotron radiation…

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Topics & keywords

Topics
Keywords
  • Nitrate
  • Electrochemistry
  • Faraday efficiency
  • Ammonia
  • Electrode
  • Materials science
  • Inorganic chemistry
  • Copper
UN Sustainable Development Goals
  • Clean water and sanitation
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