High density facet junctions in nano-stepped CuFeO2 enable efficient charge separation for selective photocatalytic CO2 reduction to CH4

Stepped CuFeO 2 hexagonal nanosheets with high-density facet junctions were prepared for selective photocatalytic CO 2 reduction to CH 4 with a rate of 43.79 μmol g −1 h −1 and 78% selectivity.