In this paper, we report CdS quantum dots (QDs) sensitized vertical growth two-dimensional titanium dioxide (TiO2) nanosheets array films with oriented {001} facets for the first time. The TiO2 nanosheets array films of thickness about 1.2 mu m exposed 85% high-energy {001} facets were perpendicularly grown on transparent conductive fluorine-doped tin oxide (FTO) glass substrates by a simple one-pot hydrothermal method. The CdS QDs sensitized TiO2 photoelectrode was carried out by successive ionic layer adsorption and reaction (SILAR). CdS QDs with a diameter less than 10 nm were uniformly anchored on the surface of the single-crystalline TiO2 nanosheets with active {0011 facets. Under AM 1.5 G illumination, the photoelectrode of CdS sensitized TiO2 nanosheets array is found with a photocurrent intensity of 324 mA/cm(2) at a potential of DV versus Ag/AgCl, which is much higher than that of the bare TiO2 nanosheets array with 0.48 mA/cm2. The excellent photoelectrochemical properties of the novel photoanodes suggest that the TiO2 nanosheets array films sensitized by CdS QDs have potential applications in solar cells. (C) 2014 Elsevier Ltd. All rights reserved.