fig6

From: Critical advances in charge separation regulation for photocatalytic CO₂ reduction

Critical advances in charge separation regulation for photocatalytic CO<sub>2</sub> reduction

Figure 6. Schematic illustration of the S-scheme heterojunction mechanism: (A) Schematic illustration of the formation mechanism of an S-scheme heterojunction. Reprinted from Ref.^[54] under the CC BY 4.0 license; (B) Schematic illustration of dual S-scheme charge carrier transfer process; (C) Radar plot comparing catalytic activity (expressed as the logarithm of production rate per mass of catalyst) and selectivity among carbon-containing products. CB: Conduction band; VB: valence band; IEF: internal electric field.