3D-2D-3D BiOI/porous g-C3N4/graphene hydrogel composite photocatalyst with synergy of adsorption-photocatalysis in static and flow systems

A novel 3D-2D-3D BiOI/porous g-C3N4/graphene hydrogel (BPG) composite photocatalyst was synthesized via a two-step hydrothermal method and shows a synergy of adsorption and photocatalysis. In comparison with bulk g-C3N4, 2D porous g-C3N4 (pCN) exhibited not only shortened diffusion distance for photogenerated carrier transport but also large contact area for rapid interfacial charge separation. Nevertheless, the photocatalytic performance was...