Superhydrophobic magnetic Fe_(3)O_(4) polyurethane sponges for oil-water separation and oil-spill recovery  

作　　者：Shiyu Wu Yunjie Xiang Yaqi Cai Jingfu Liu 

机构地区：[1]Sino-Danish College,University of Chinese Academy of Sciences,Beijing 100049,China [2]State Key Laboratory of Environmental Chemistry and Ecotoxicology,Research Center for Eco-Environmental Sciences,Chinese Academy of Sciences,Beijing 100085,China [3]School of Environment,Hangzhou Institute for Advanced Study,UCAS,Hangzhou 310024,China [4]School of Environmental Science and Engineering,Southern University of Science and Technology,Shenzhen 518055,China

出　　处：《Journal of Environmental Sciences》2024年第5期160-169,共10页环境科学学报（英文版）

基　　金：supported by the National Natural Science Foundation of China(Nos.21827815 and 42192571)。

摘　　要：The effective and affordable separation of oil and water,a crucial process in the safe han dling of environmental disasters such as crude oil spills and recovery of valuable resources is a highly sought-after yet challenging task.Herein,superhydrophobic PU sponge was fab ricated for the fast and cost-effective adsorptive separation of oil and different organic sol vents from water.Octadecyltrichlorosilane(OTS)-functionalized Fe_(3)O_(4)@SiO_(2)core-shell mi crospheres were dip-coated on the surface of porous materials via a dip-coating process thereby endowing them with superhydrophobicity.Owing to the hydrophobic interaction between OTS molecules and oil and increased capillary force in the micropores,the result ing superhydrophobic sponge served as a selective oil-sorbent scaffold for absorbing oil from oil-water mixtures,including oil-water suspensions and emulsions.Remarkably,after the recovery of the adsorbed oil via mechanical extrusion,these superhydrophobic materials could be reused multiple times and maintain their oil-water separation efficacy even afte 10 oil-water separation cycles.

关 键 词：Fe_(3)O_(4)@SiO_(2)-OTS polyurethane sponge Oil-water separation Adsorption capacity Oil-spill recovery 

分 类 号：X703[环境科学与工程—环境工程]