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

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 Fourier Transform Infrared Spectroscopy and theoretical calculations revealed that th

SUBMITTER: Zhang B 

PROVIDER: S-EPMC10984973 | biostudies-literature | 2024 Apr

REPOSITORIES: biostudies-literature