Superhydrophobic-Superoleophilic SiO2/Polystyrene Porous Micro/nanofibers for Efficient Oil-Water Separation
- Resource Type
- Article
- Authors
- Yadan Ding; Dan Xu; Hong Shao; Tie Cong; Xia Hong; Huiying Zhao
- Source
- Fibers and Polymers, 20(10), pp.2017-2024 Oct, 2019
- Subject
- 섬유공학
- Language
- English
- ISSN
- 1229-9197
SiO2/polystyrene porous micro/nanofibers with superhydrophobic and superoleophilic properties were preparedby facile electrospinning method. The spindle-beads-on-string structured fibers were found to be more hydrophobic thanthose without the beads. The doping of nano-SiO2 endowed the fibers with porous structure, and thus further increased thewater contact angle from 139 o to 153 o. Simultaneously, the oil contact angle of 0 o was obtained. The superhydrophobicsuperoleophilicmicro/nanofibers could selectively absorb oil from water within eight seconds. The oil sorption processfollowed pseudo-first order kinetic model. The absorption mechanism was proved to be physical encapsulation by Fouriertransform infrared technique. The maximum sorption capacity for highly viscous silicone oil was up to 122.7 g/g. It is higherthan many recently reported values. The porous micro/nanofibers exhibit significant value in oil-water separation.