▎ 摘　　要

With development of industrial activities, a lot of oil pollution is released to water environment. As such, superhydrophobic oil adsorption materials with reusability are required. For this purpose, a magnetic superhydrophobic polyurethane sponge by connecting graphene oxide was coated with functionalized oleic acid Fe3O4 nanoparticles on the three-dimensional microstructure of commercial polyurethane sponge (Fe3O4@OA@GO-PU) via simple and low-cost dip coating method. Characterization analysis were used to confirm the synthesis of modified sponge. The eco-friendly effective modified sponge repelled water with contact angle 158 degrees and selectively adsorbed organic solvents and various oils from water with high adsorption capacity. The water content obtained by distillation method was lower 1%. The adsorption capacity was improved under magnetic field exposure with various intensities due to the surface area of modified PU sponge was increased. Further the magnetic property of modified PU sponge contributed to controlling and recycling by a magnet such that it could be used for 15 times for oil spill cleanup without decline in its adsorption capacity, while exclusivity of superhydrophobic functionalized PU sponge caused selectively separation of contaminants from water. Additionally, the modified sponge could be collected oil from water continuously when being connected to a peristaltic pump. Thus, the modified sponge is an excellent adsorbent for practical applications in separation oil-polluted water.