▎ 摘　　要

Graphene oxide (GO) was prepared by modified Hummers' method starting from commercially available graphite. Different amounts of titanium dioxide nanoparticles (TiO2) were loaded on the sheets of GO to obtain titanium dioxide/graphene oxide (TiO2/GO) nanocomposites. The as-synthesized 5 wt% TiO2/GO nanocomposite was characterized by UV/Vis spectroscopy, photoluminescence spectroscopy, FTIR, powder X-ray diffraction, scanning electron microscopy, transmission electron microscopy, and atomic force microscopy techniques. The catalytic activity of the 5 wt% TiO2/GO nanocomposite was evaluated in the esterification of benzoic acid using dimethyl carbonate (DMC) as a green methylating agent. Furthermore, the activity of this nanocomposite for the conversion of benzoic acid was higher than that of the parent GO, TiO2, TiO2/activated carbon, and TiO2/graphite.