▎ 摘　　要

In this study, titanium dioxide (TiO2) and graphene oxide (GO) were used to make a titanium dioxide/reduced graphene oxide (TG) composite under hydrothermal condition, and the TG composite was subsequently dye-sensitization (DTG). TEM, XRD, Raman, XPS, and UV-vis DRS spectroscopy were used to examine the structure and morphology of DTG, and the results revealed that the grafting rate of dye molecules on TG was approximately 20.4% and the band-gap value for TiO2, TG and DTG were 3.21, 3.03, 2.57 eV, respectively. The photocatalytic performances of DTG, TG, and TiO2 were investigated under the illumination of a xenon lamp, and it was discovered that the final removal rates of MB by TiO2 and TG were only 21.53% and 50.37%, but DTG can remove 97.67% of MB, the COD value of the effluent decreased by 88.24%. Furthermore, the elimination rate of MB maintained over 90% after 5 cycles of photocatalytic tests, indicating that DTG had good endurance.