The compound Sr10Bi6O24-y doped with Ni was prepared by solid-state reaction method. The obtained powders were characterized by X-ray diffraction (XRD). scanning electron microscopy (SEM). UV-vis diffuse reflectance spectra and X-ray photoemission spectra (XPS). The Ni-doped Sr10Bi6O24-y samples assume a Cubic perovskite structure with space group Fm3m (2 2 5). Bi in Sr10Bi6O24-y, exists in the valence state of Bi(II). Photocatalytic activities of the prepared samples were evaluated using acid red G as a model organic Compound. The results show that doping with 0.5 wt.% Ni can significantly improve the photoactivity of the Compound Sr10Bi6O24-y. (c) 2008 Elsevier B.V. All rights reserved.