Synergistic integration of PdCu alloy on TiO2 for efficient photocatalytic CO2 reduction to CH4 with H2O

The synergistic effect of PdCu alloys on TiO 2 nanosheets expands the light-absorption range, improves the adsorption of CO 2 and H 2 O, and accelerates photogenerated electron migration, resulting in an increased CH 4 yield with a selectivity of 98.7%.