Fig. 4: Mechanistic eNCU investigations.
From: Plasma-electrocatalytic synthesis of urea from air and CO2
a Adsorption free energies of *NO2 and *CO2 on different sites of Ru1/CuOx. b Charge density difference map of *CO2 on Cu-OV site. c–e Free energy diagrams of c CO2 → *CO, d NO2− → *NH2 pathways, and e C-N coupling of *CO and *NH2 on Cu-OV and Ru1-OV sites. f, g In situ FTIR spectra of f Ru1/CuOx and g CuOx during the eNCU electrolysis at different potentials. h In situ Raman spectra of Ru1/CuOx during the eNCU electrolysis at different potentials. Source data are provided as a Source Data file.
