物理化学学报2018，Vol.34Issue(5)：456-475,20.DOI:10.3866/PKU.WHXB201709211
基于特殊润湿性材料的油水分离
Oil-Water Separation Based on the Materials with Special Wettability
摘要
Abstract
The frequency of oil-spill accidents and industrial wastewater discharges have caused severe water pollution,not only resulting in huge economic losses but also threatening the ecological system.Recently,researchers have developed different types of materials with special wettability (such as superhydrophobicity or superoleophobicity) and used them successfully for oil-water separation.Superhydrophobic and superoleophobic surfaces can generally be obtained by designing the surface geometric micro-topography and chemical composition of solid materials.Endowing porous materials with reverse super-wettability to water and oil using various microfabrication technologies is the key to separate oil-water mixtures.In this review we initially identify the significance of fabricating oil/water-separating materials and achieving effective separations.Then,the typical theoretical principles underlying surface wettability are briefly introduced.According to the difference in surface wettabilities toward water and oil,we classify the current oil-water separating materials into three categories:(i) superhydrophobic/superoleophilic materials,(ii) superoleophobic/superhydrophilic materials,and (iii) smart-response materials with switchable wettability.This review summarizes the representative research work for each of these materials,including their fabrication methods,principle and process of oilwater separation,and main characteristics and applications.Finally,existing problems,challenges,and future prospects of this fast-growing field of special wettability porous materials for the separation of oil-water mixtures are discussed.关键词
油水分离/超疏水/超疏油/智能响应/润湿性Key words
Oil-water separation/Superhydrophobicity/Superoleophobicity/Smart-response/Wettability分类
化学化工引用本文复制引用
李文涛,雍佳乐,杨青,陈烽,方瑶,侯洵..基于特殊润湿性材料的油水分离[J].物理化学学报,2018,34(5):456-475,20.基金项目
The project was supported by the National Natural Science Foundation of China (51335008,61475124),Joint Fund of the National Natural Science Foundation of China and the China Academy of Engineering Physics (NSAF) (U1630111),the National Key Research and Development Program of China (2017YFB1104700) and China Postdoctoral Science Foundation (2016M600786).国家自然科学基金(51335008,61475124),国家自然科学基金委员会与中国工程物理研究院联合基金(U1630111),国家重点研发计划(2017YFB1104700)及中国博士后科学基金(2016M600786)资助项目 （51335008,61475124）
