Research Progress of Nanofiber-based Membrane Materials in Oil-water Separation
With the development of industry and the improvement of people's living standards,the problem of water pollution is becoming more and more serious.The discharge of oily wastewater not only has an impact on the economy,but also destroys and disrupts our living environment and ecological balance.The nanofiber membrane prepared by electrospinning technology is widely used in water purification and oil-water separation because of its advantages of controllable wettability,adjustable pore structure and large specific surface area.This paper systematically reviews the research progress on water filtration of electrospinning nanofiber membranes from the perspective of wetting mechanism,including conventional wetting membranes(superhydrophobic membranes and hydrophilic-underwater oleophobic membranes),special wetting membranes(stimulus response membranes and asymmetric wetting Janus membranes)and other multifunctional composite membranes.Finally,the main problems and challenges that exist in the use of different wettable membranes are analyzed in order to understand the limitations of nanofiber materials in this field,which provides ideas for the subsequent development of nanofiber membrane in the direction of oil-water separation.
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