We report here the novel approach to synthesis of layer perovskite photocatalysts, Pb₂Ga₂Nb₂O₁₀ and RbPb₂Nb₂O₇ using solid state route (SSR) and molten salt synthesis (MSS) method. The reported modified MSS method has advantage over conventional SSR method for uniform particle size, well-defined crystal structure, controlled morphology and stoichiometry vis-à-vis photocatalysis. The structural study was performed using X-ray difractometry (XRD) and computation based on density functional theory (DFT). The simulation study showed that both the compounds belong to the Ruddlesden-Popper phase (A′₂A_n−1B_nO_3n+1; n = 2 or 3). The surface morphology of the materials was studied using field emission scanning electron microscope (FESEM) and high resolution transmission electron microscope (HRTEM). The average particles size of perovskites Pb₂Ga₂Nb₂O₁₀ and RbPb₂Nb₂O₇ was in the …​