Fig. 4. (a) ATR-SEIRAS spectra of 3 nm Ag in CO₂ saturated 0.1 M KCl electrolyte at –1.1 V. ATR-SEIRAS spectra of (b) 3 nm, (c) 5 nm, (d) 11 nm and (e) disordered Ag in CO₂ saturated 0.1 M KCl electrolyte at different potentials. (f) Reaction mechanism for the CO₂RR and HER on the Ag surface.