Mesoporous silica coated graphene oxide: fabrication, characterization and effects on the dielectric properties of its organosilicon hybrid films

In this research, the graphene oxide was coated with mesoporous silica via sol–gel process. For acquiring mesoporous silica coated graphene oxide with different properties, reduction and calcination also have been applied during preparation. Subsequently, different organosilicon hybrid film samples of mesoporous silica coated graphene oxide have been prepared via in-situ polymerization. By applying transmission electron microscope, scanning electron microscope, X-ray powder diffraction, Raman spectra, Fourier transform infrared spectra, and X-ray photoelectron spectrometer, the physical structure and chemical structure of the mesoporous silica coated graphene oxide with different properties have been fully characterized. As a result, the existence of graphene oxide has also been confirmed. The dielectric analyses of different hybrid film samples reveal the effects of reduction and calcination on the dielectric properties of final hybrid film samples. So we believe that this research can offer inspiration for preparing a novel dielectric graphene-hybrid material.