عنوان مقاله [English]
Synthesis of TiO2- based composite by using carbonous materials can solve some restrictions related to the application of titanium dioxide in industrial scale. In this study carbon nanotubes (CNTs), graphene oxide (GO) and reduced graphene oxide (RGO) are used to improve the photocatalytic activity of TiO2 for the degradation of methylene blue under visible light irradiation and the effect of simultaneous usage of graphene sheets and CNTs are evaluated through the enhancement of TiO2 degradation activity. The photocatalytic activity and characterization of as-prepared samples were evaluated by Fourier transform-infrared spectroscopy, X-ray diffraction, Field emission scanning electron microscopy and UV-Vis Spectrophotometer. Results indicate the successful preparationof TiO2-CNT-GO nanocomposite by sol-gel method. Moreover the simultaneous using of graphene sheets and CNT can prove the composite decoloration activity. The maximum photocatalytic degradation of MB (94%) is achieved within 90 min. The enhanced photocatalytic activity of TiO2-CNT-GO nanocomposite can be ascribed to the high surface area, severe electron transmission and monotone distribution of carbon based nanoparticles.