Fig. 1: Electrocatalytic performance for the NO3−-to-NH3 conversion.
A Scheme of the potentiostatic potential electrolysis and pulsed electrolysis. EP represented a relatively positive potential, and EN represented a relatively negative potential. TP and TN represented the positive potential and negative potential pulse durations, respectively; B the FE and yield rate under the potentiostatic potential electrolysis over Cu nanoparticles in the electrolyte with 0.5 M K2SO4 and 0.01 M KNO3; NH3 FE and yield rate under the pulsed potential electrolysis conducted at C EP = 0.2 V for different TP, EN = −1.4 V for TN = 50 s and D EP = 0.2 V for TP = 2 s, EN = −1.4 V for different TN; E NH3 yield rate under potentiostatic potential electrolysis and the pulsed potential electrolysis conducted at different EP for TP = 2 s, EN = −1.4 V for TN = 50 s. Error bars denote standard deviations based on three independent measurements. The voltage is not iR corrected. Source data for the figure are provided as a Source data file.
