Fig. 2From: Sustainable hydrogen production from water using tandem dye-sensitized photoelectrochemical cells(Copyright 2012 American Chemical Society)Schematic illustration of TiO2 photocatalysis and redox potentials for (a) water splitting, (b) CO2 reduction, and (c) DSSCs. CB, conduction band; VB, valence band; D, donor; S, photosensitizer. Reprinted with permission from He et al. [47].Back to article page