BiVO4/Ta2O5/g-C3N4 (BTC) multiphase composite photocatalysts were synthesized by hydrothermal andsolid-phase methods for photocatalytic degradation of rhodamine B (RhB) under visible lightirradiation. The physical and photophysical properties of the g-C3N4, BiVO4, Ta2O5 andBiVO4/Ta2O5/g-C3N4 hybrid materials were investigated by X-ray diffraction (XRD), ultraviolet–visible absorption spectroscopy (UV-Vis), photoluminescent spectroscopy (PL), and transmissionelectron microscopy (TEM). We also investigated that photocatalytic performance of these BTCmaterials were highly dependent on the weight ratio of these used precursors. The optimized(NH2)2CO:BiVO4:Ta2O5 weight ratio for a dramatic photocatalytic enhancement of the BTC was 4:1:1(BTC-4).Keywords: BiVO4, g-C3N4 , Ta2O5, visible light, photocatalytic activity, rhodamine B, recombination.