In this paper, N-doped and Si-doped TiO2 nanocatalyst as powder and grafted onto PMMA film have been prepared and tested for the photocatalysis toward methylene blue dye under UV and visible light irradiation. The samples were characterized by using X-ray diffraction (XRD), N-2-physisorption, UV-visible spectroscopy (UV-vis), X-ray photoelectron spectroscopy (XPS), electron spin resonance (ESR), scanning electron microscope with energy dispersive X-ray (SEM-EDX) and photoluminescence (PL). The kinetic were used to investigate the performance of grafted film of modified materials compared with pristine TiO2 grafted onto PMMA film. The results showed that, kinetic constant parameter of modified TiO2 were improved both as powder and grafted film. (C) 2018 Elsevier B.V. All rights reserved.