Synthesis of silanized maghemite nanoparticles onto reduced graphene sheets composites

•Novel γ-Fe2O3@APTES@rGO composites are synthesized.•Silanization process of maghemite nanoparticles was done in controllable quantity.•XRD, FT-IR, TGA and SEM techniques were used to confirm the composite existence.

Novel γ-Fe2O3@APTES@rGO composites are successfully synthesized by using graphene oxide and silanized maghemite nanoparticles. Graphene oxide and maghemite were obtained by Hummers and Massart methods, respectively. The silanization process was done to functionalize maghemite surface with a controllable quantity of amino groups. Then, by adding aqueous graphene oxide suspension, the bonding between graphene oxide and silanized maghemite nanoparticles was done in refluxing conditions. Afterwards, chemical reduced graphene oxide reaction was realized by addition of hydrazine solution. The characterization of γ-Fe2O3@APTES@rGO composites was studied by X-ray Diffraction, Fourier Transformed Infrared Spectroscopy, thermogravimetric analysis and scanning electron microscopy.

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