Floating fly-ash cenospheres supported AgCl/TiO2 films photocatalysts were prepared by a simple sol-gel method. The catalysts were characterized by X-ray diffraction (XRD), scanning electron microscope (SEM), thermo gravimetric analysis-differential scanning calorimeter (TG-DSC), and UV-vis diffuse reflection spectrum (UV-vis DRS). The results show that the fly-ash cenospheres are coated with about 2 mu m thickness of AgCl/TiO2 nano-composite films. The fly-ash cenospheres loaded the films of AgCl/TiO2 photocatalysts exhibit high visible-light-induced photocatalytic activity for the decomposition of Rhodamine B waste water. When the photocatalyst contained the dosage of 0.21 g AgCl, the photo-degradation rate could reach 94.96% in 180 min under visible light irradiation, and removal rate of TOC could reach 20.34% in the same condition. (C) 2010 Elsevier B.V. All rights reserved.