Fig. 1: Schematic illustrations.

Synthesis of porous Pd-HPP-TiO2 and the possible mechanism of photocatalytic CO2 reduction. The chemical structures of HPP and Pd-HPP units are provided.
Synthesis of porous Pd-HPP-TiO2 and the possible mechanism of photocatalytic CO2 reduction. The chemical structures of HPP and Pd-HPP units are provided.