Superhydrophobic Bud Protrusion-Polypropylene Fiber Membrane with Ultrahigh Flux for Oil–Water Separation

• DOI: 10.1021/acs.iecr.4c00792
• Publication Date: 2024-05-16T15:48:23Z
• Authors: Xingyu Liu; Yifei Wang; Jinli Zhang; Wei Li
• Keywords: Polypropylene

To enhance oil–water separation efficiency, it is urgent to synthesize novel membrane materials that exhibit high flux and retention efficiency excellent antisolvent property. Herein, a seeding–extension–bud protrusion procedure was developed fabricate superhydrophobic membranes through UV-assisted grafting covalent modification on microporous polypropylene. The synthesized (PPN-HDI-TPFOS) bud micro/nanostructure, which significantly increases the contact area between surface emulsion, as well collision among emulsion droplets during separation. This shows of up 24 800 L m–2 h–1 for dichloromethane (DCM)/water immiscible mixtures 6528 water-in-DCM emulsions, together with water (>99%) good Moreover, exhibits rates (>98%) other water-in-oil emulsions (kerosene, hexane, cyclohexane). work supplies useful strategy complex extremely rejection rate.