Fig. 1: Solid-liquid (S-L) junction-mediated charge rearrangement to attract NO3‒.
From: Near-Unity Nitrate to Ammonia conversion via reactant enrichment at the solid-liquid interface

Schematic diagram of S-L junction-mediated NO3‒ enrichment within the IHP region over Ag-MoS2 at the reduction potential. Eredox represents the theoretical redox potential of NO3‒/NH3. CBM and VBM express the conduction band minimum and valence band maximum of Ag-MoS2, respectively. Note: IHP contains surface holes, solvate molecules, and NO3‒ anions and cations. Electrons accumulate on the electrode surface under negative polarization. Ionized acceptors exist in the S-L junction (see detailed discussions in the supplementary discussions).