文献类型：期刊文献

英文题名：Anchoring metal organic frameworks on nanofibers via etching-assisted strategy: Toward water-in-oil emulsion separation membranes

作者：Zhou, Fu[1];Wang, Yixing[1];Dai, Liheng[1];Xu, Fang[1];Qu, Kai[1];Xu, Zhi[1]

机构：[1]East China Univ Sci & Technol, Sch Chem Engn, State Key Lab Chem Engn, Shanghai 200237, Peoples R China

年份：2022

卷号：281

外文期刊名：SEPARATION AND PURIFICATION TECHNOLOGY

收录：;EI(收录号：20214211019802);WOS:【SCI-EXPANDED(收录号:WOS:000707360700003)】；

基金：This work was sponsored by National Natural Science Foundation of China (grant numbers 21908054, 22075076).

语种：英文

外文关键词：Nanofibrous membrane; Metal organic framework (MOF); Water-in-oil emulsion separation; Etching-assisted in-situ growth; Anchoring effect

摘要：Efficiently separating water-in-oil emulsions is urgent demand and still worldwide challenge. Nanofibrous membranes with super-wetting surface have drawn wide concern to solve it. Herein, under-oil superhydrophobic zeolitic imidazolate framework-71/poly(vinylidene fluoride-hexafluompropylene) (ZIF-71/PVDF-HFP) nanofibrous membranes were prepared via electrospinning and etching-assisted in-situ growth strategy for water-in-oil emulsions separation. ZnO was etched to create adsorption sites, ensuring the dispersed ZIF-71 nanoparticles firmly anchoring on nanofibers. The membranes showed under-oil superhydrophobicity with under-oil water contact angle 162.1 degrees. The membranes could effectively separate a variety of water-in-oil emulsions (such as dichloromethane, chloroform, and toluene) by gravity. The separation efficiency of all emulsions was higher than 99% and the flux of water-in-chloroform without surfactant reached up to 6577.68 L m(-2) h(-1) . Moreover, the membranes exhibited excellent cyclic stability and anti-fouling. Therefore, the MOF/nanofibrous membranes fabricated by etching-assisted strategy are promised candidates for efficient oil/water separation.