Fig. 3: Electrocatalytic nitrate reduction performance.
From: Electrochemical ammonia synthesis via nitrate reduction on Fe single atom catalyst
a LSV curves of the Fe SAC in 0.25 M K2SO4 electrolyte and 0.50 M KNO3/0.10 M K2SO4 mixed electrolyte. b NH3 FE of Fe SAC at each given potential. Red dot is FE estimated by three independent NMR tests. c NH3 yield rate and partial current density of Fe SAC, FeNP/NC, and NC. d 1H NMR spectra for the electrolytes after three independent nitrate reduction tests at −0.66 V. e 1H NMR spectra for electrolytes after 15NO3– reduction tests at different time using 0.50 M K15NO3/0.10 M K2SO4 mixed electrolyte. f NH3 yield rate of Fe SAC, Co SAC, and Ni SAC based on metal content. g The cycling tests of Fe SAC for reduction tests at −0.66 V. Catalyst loading for all of electrocatalytic nitrate reduction tests is 0.4 mg cm−2.
