What Are the Mechanisms Involved in Photocatalysis?
When a photocatalyst absorbs light, it generates electron-hole pairs. The photoelectrons in the conduction band and the holes in the valence band can migrate to the surface of the catalyst. These charge carriers can then participate in oxidation and reduction reactions with reactant molecules adsorbed on the surface. The overall efficiency of photocatalysis depends on several factors, including light absorption, charge separation, and the mobility of the photoelectrons and holes.
