Photocatalytic and Photoelectrochemical Water Splitting on TiO₂ via Photosensitization

Figure 12

SEM images of TiO₂ nanotube arrays after CdS deposition with low (a) and high (b) magnification. The inset is a cross-sectional SEM image of the modified film. (c) Current density-voltage characteristics measured from the CdS/TiO₂ photoelectrode made by the CSS technique under dark condition (a) and under AM 1.5 G illumination (b). For comparison, photocurrents obtained from a plain TiO₂ nanotube film (e) and a CdS/TiO₂ photoelectrode made by the CBD method (c) and presynthesized QD deposition (d) are also given. Reprinted with permission from [10]. Copyright 2009, American Chemical Society.