In this paper an improvement in the photocatalytic performance of TiO_2 was carried out via hybridizing with graphene.Graphene-TiO_2(GR-TiO_2/nanocomposites with different weight addition ratios of graphene oxide(GO)have been prepared via a facile microwave irradiation of GO and tetrabutyl titanate in isopropyl alcohol.Raman spectroscopy(RS),X-ray diffraction(XRD),scanning electron microscopy(SEM),transmission electron microscopy(TEM),UV–visible spectroscopy(UV–vis),Fourier transform infrared spectra(FTIR),energy dispersive X-ray spectroscopy(EDX)and photoluminescence spectra(PL)are employed to determine the properties of the samples.Microwave irradiation can heat the reactant to a higher temperature in a short time,simultaneously GO is reduced to graphene and TiO_2 nanoparticles grown on the surface of GR.GR-TiO_2 nanocomposites synthesized via this approach have efficient electron conductivity in GR,resulting in a reduced electron–hole recombination rate.Among the synthesized nanocomposites,GT-8wt% exhibited the best photocatalytic activity toward photocatalytic degradation of MB.Our current work provides a new insight for the fabrication of GR-TiO_2 nanocomposites within a short reaction time and also explains the mechanism of photocatalysis employing radical and hole scavengers. In this paper an improvement in the photocatalytic performance of TiO 2 was carried out via hybridizing with graphene.Graphene-TiO 2 (GR-TiO 2 / nanocomposites with different weight addition ratios of graphene oxide (GO) have been prepared via a facile microwave irradiation of GO and tetrabutyl titanate in isopropyl alcohol. Raman spectroscopy (RS), X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), UV- visible spectroscopy (UV- vis), Fourier transform infrared spectra (FTIR ), energy dispersive X-ray spectroscopy (EDX) and photoluminescence spectra (PL) are employed to determine the properties of the samples. Microbial irradiation can heat the reactant to a higher temperature in a short time, simultaneously GO is reduced to graphene and TiO 2 nanoparticles grown on the surface of GR.GR-TiO_2 nanocomposites synthesized via this approach have efficient electron conductivity in GR, resulting in reduced electron-hole recombination rate. Among the synthesized n anocomposites, GT-8wt% exhibited the best photocatalytic activity toward photocatalytic degradation of MB. Our current work provides a new insight for the fabrication of GR-TiO_2 nanocomposites within a short reaction time and also explains the mechanism of photocatalysis employing radical and hole scavengers.