Fe/Cu diatomic catalysts for electrochemical nitrate reduction to ammonia.

ABSTRACT: Electrochemical conversion of nitrate to ammonia offers an efficient approach to reducing nitrate pollutants and a potential technology for low-temperature and low-pressure ammonia synthesis. However, the process is limited by multiple competing reactions and NO₃^- adsorption on cathode surfaces. Here, we report a Fe/Cu diatomic catalyst on holey nitrogen-doped graphene which exhibits high catalytic activities and selectivity for ammonia production. The catalyst enables a maximum ammonia Faradaic efficiency of 92.51% (-0.3 V(RHE)) and a high NH₃ yield rate of 1.08 mmol h^-1 mg^-1 (at - 0.5 V(RHE)). Computational and theoretical analysis reveals that a relatively strong interaction between NO₃^- and Fe/Cu promotes the

SUBMITTER: Zhang S 

PROVIDER: S-EPMC10279643 | biostudies-literature | 2023 Jun

REPOSITORIES: biostudies-literature