TiO2/CdS composite hollow spheres with controlled synthesis of platinum on the internal wall for the efficient hydrogen evolution

Porous hollow sphere of h-(Pt-TiO2)/CdS, with outer shell of CdS as an antenna for visible light, and internal shell of TiO2 with Pt nanoparticles as H2 evolution active layer, exhibits a high efficiency of visible-light-driven photocatalytic H2 production. The excellent catalytic performances are attributed to the synergetic effects of the ideal electron transfer and the spatial separation of reduction and oxidation active surfaces.