Research Progress of Oil-Water Separation Membranes with Adaptable Wettability
During the development and utilization of petroleum resources,the frequent occurrence of oil spills and the discharge of industrial oily wastewater will pose great danger to ecological environment and human health.To protect limited water resources and recover oil from wastewater,in recent years,researchers have developed various oil-water separation membranes with adaptable wettability.This type of membranes does not require any continuous external stimulation,and only needs to be pre-wet to realize the reversible switch between underwater superoleophobicity and underoil superhydrophobicity.According to the material wettability in air,oil-water separation membranes with adaptable wettability can be divided into three categories:(1)in air amphiphilic/under-liquid dual superlyophobic membranes;(2)in air oleophilic and hydrophobic/under-liquid dual superlyophobic membranes;(3)in air amphiphobic/under-liquid dual superlyophobic membranes.This review summarizes recent research progress in applying adaptable wettability materials to achieve oil-water separation,including the preparation methods,the construction process of the membrane surface,the principles of achieving oil-water separation,and the main characteristics and applications.Finally,challenges and future prospects of oil-water separation membranes with adaptable wettability are discussed.
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万方数据
维普
