Extended Data Fig. 7: Identification of key N intermediates.
From: Direct electrosynthesis of methylamine from carbon dioxide and nitrate
1H NMR spectra of catholyte solutions after reduction of a, CO2 in the presence of NH4HCO3 and b, CO in the presence of NH4OH. Stacked together are spectra of CH3OH and methylamine co-dissolved in 0.1 M KOH and electrolyte solution after co-reduction of CO and NO3−. c, 1H NMR spectra of catholyte solutions after co-reduction of CO2 in 0.1 M PBS with different N sources: KNO3, NaNO2, NO and NH2OH. The peaks pertaining to methylamine are highlighted in green.
