Nanoscale silica-coated graphene oxide and its demulsifying performance in water-in-oil and oil-in-water emulsions

In current work, GO@SiO2 nanocomposite was prepared by coating nanoscale silica onto graphene oxide (GO). characterized with scanning electron microscopy (SEM), X-ray diffraction (XRD), and Fourier-transform infrared spectroscopy (IF-IR). Additionally, the demulsifying performance of investigated bottle test. The results showed that had a good in both oil-in-water (O/W) water-in-oil (W/O) emulsions. When concentration 200 ppm O/W emulsion, optimal light transmittance aqueous phase (LTA) corresponding oil removal rate (ORR) at room temperature could reach 86.9% 99.48%, respectively. Also, an excellent salt tolerance under acidic condition. Furthermore, also demulsify W/O efficiency 70 °C 80.5% when 400 ppm.