ABSTRACT
Photocatalysis aims at converting light into chemical energy.1-5 This typically can be achieved by using a solid material (photocatalyst) that is able to absorb photons of a wavelength range to produce reactive chemical species on its surface. Most of the photocatalysts are semiconductor solid materials that are characterized by the existence of a valence band fully occupied by electrons and an empty conduction band, there being a bandgap energy between these occupied and empty bands (Scheme 14.1).5
