Pulsed electroreduction of low-concentration nitrate to ammonia

Abstract Electrocatalytic nitrate (NO 3 − ) reduction to ammonia (NRA) has emerged as an alternative strategy for effluent treatment and ammonia production. Despite significant advancements that have been achieved in this field, the efficient conversion of low-concentration nitrate to ammonia at low overpotential remains a formidable challenge. This challenge stems from the sluggish reaction kinetics caused by the limited distribution of negatively charged NO 3 − in the vicinity of the working electrode and the competing side reactions. Here, a pulsed potential approach is introduced to overcome these issues. A good NRA performance (Faradaic efficiency: 97.6%, yield rate: 2.7 mmol −1 h −1 mg Ru −1 , conversion…

• NN
  National Natural Science Foundation of China

  Awards: 22071173, 22271213
• SY
  Sun Yat-sen University
• TU
  Tianjin University
• TS
  Tianjin Science and Technology Program

  Award: 22ZYJDSS00060
• BA
  Basic and Applied Basic Research Foundation of Guangdong Province

  Award: 2022A1515140051
• NS
  National Supercomputing Center, Korea Institute of Science and Technology Information