Electrochemical ammonia synthesis via nitrate reduction on Fe single atom catalyst.

ABSTRACT: Electrochemically converting nitrate, a widespread water pollutant, back to valuable ammonia is a green and delocalized route for ammonia synthesis, and can be an appealing and supplementary alternative to the Haber-Bosch process. However, as there are other nitrate reduction pathways present, selectively guiding the reaction pathway towards ammonia is currently challenged by the lack of efficient catalysts. Here we report a selective and active nitrate reduction to ammonia on Fe single atom catalyst, with a maximal ammonia Faradaic efficiency of ~ 75% and a yield rate of up to ~ 20,000 μg h^-1 mg_cat.^-1 (0.46 mmol h^-1 cm^-2). Our Fe single atom catalyst can effectively prevent the N-N coupling step required for N₂ due to the l

SUBMITTER: Wu ZY 

PROVIDER: S-EPMC8128876 | biostudies-literature | 2021 May

REPOSITORIES: biostudies-literature