Abstract: Bi2WO6 powders were successfully synthesized using Bi(NO3)3·5H2O and Na2WO4·2H2O as starting materials through low-temperature hydrothermal processes.The crystalline phases,microstructures and optical properties of the samples were characterized by using physicochemical techniques such as X-ray diffraction (XRD),scanning electron microscopy (SEM) and UV-vis diffuse reflectance spectroscopy (DRS).The photocatalytic activities of the obtained Bi2WO6 powders were also evaluated through photocatalytic degradation of methyl violet (MV) and rhodamine B (RhB) in solution under simulated sunlight illumination.The effects of aging time,reaction temperatures,pH and using of different templates on crystalline phases and photocatalytic activities of the samples were investigated.The results show that Bi2WO6 obtained by using cetyltrimethyl ammonium bromide (CTAB) as template through a 72h aging at 90℃ exhibited the highest efficiency for degradation of organic dyes.