▎ 摘　　要

Graphene oxide (GO) was prepared by oxidation reaction of graphite (GF) using the Hummers' method and modified by a cationic surfactant (cetyltrimethylammonium bromide - CTAB) followed by chemical reduction using hydrazine monohydrate (N2H4 x H2O) to obtain MGNO powders. The structural and thermal properties of GO and MGNO powders were studied using zeta potentiometer (ZP), Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), scanning electron microscopy (SEM) and thermogravimetric analysis (TGA). The results demonstrated that CTAB was successfully grafted onto the surface of the GO through non-covalent modification between CTA(+) ions and GO for all MGNO powders. A reasonable improvement in thermal stability of the MGNO powders was also observed. FTIR results showed the successful intercalation of CTA(+) ions for all MGNO powders. The optimum concentration of surfactant was found to be 120 mg x l(-1) (MGNO-120) by using analysis results. The ease of synthesis of MGNO-120 with both excellent intercalation and thermal stability will greatly facilitate potential applications.