Fig. 1: Investigations of pAA-eNCU pathway.
From: Plasma-electrocatalytic synthesis of urea from air and CO2

a Schematic of plasma-electrocatalytic (pAA-eNCU) pathway. b Photograph of plasma discharge. c Effect of discharge time on the resulting concentrations of generated NOx− (NO2−/NO3−) and NO2− selectivity. d Comparison of the performances between our method and reported data for pAA-derived NOx−. Source data are provided as a Source Data file.