2Preparation and characterizing of PVDF/TiO2 /GO composite membranes for oil-water separation

Oil-water separation has applications in industrial production, environmental protection and energy production, and plays a positive role in promoting economic development and protecting water resources. In this study, fiber membranes were prepared by electrostatic spinning method using PVDF, TiO2, and GO as raw materials (voltage: 15.5 kV, distance: 11 cm, and spinning solution concentration of about 12.8%). It was proved that the PVDF/TiO2/1% GO fiber membrane had good hydrophobicity and superoleophilicity. The prepared fiber membrane was recycled several times, and the separation efficiency and permeation flux were measured by gravity sedimentation and direct measurement, respectively, and the experimental results showed that the separation efficiency was more than 98%, and the permeation flux was up to 1700 L m(-2) h(-1). Therefore, the material has good oil-water separation effect.