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Durable superhydrophobic and superoleophilic electrospun nanofibrous membrane for oil-water emulsion separation
- Source :
- Journal of Colloid and Interface Science. 532:12-23
- Publication Year :
- 2018
- Publisher :
- Elsevier BV, 2018.
-
Abstract
- Marinepollution andindustrial wastewater have caused serious environmental pollution, thereby resulting into an alarming damage to public health in the past decades, hence the high demand for, cost effective, energy-efficient oil-water separation technologies for the removal of oil contaminants from such water. Herein, we report a facile method to fabricate superhydrophobic/superoleophilic membrane by immersing a polyimide (PI)-based nanofibrous membrane into a water/ethanol/ammonia/dopamine mixture, followed by modification with 1H, 1H, 2H, 2H-perfluorodecanethiol (PFDT). The PI-based membrane exhibited water contact angle (WCA) above 153°, while the oil contact angle (OCA) approached 0°, thereby promoting an outstanding chemical stability which sustained its superhydrophobicity when immersed in aqueous solutions at different pH values. Additionally, the PI-based membrane possesses ultrahigh flux, high separation efficiency and good reusability in oil-water separation. The aforementioned properties, as well as the easily scale-up preparation process ensure that this promising as-fabricated membrane can be applied for practical environmental applications including treatment of oily wastewater and oil spillage clean-up.
- Subjects :
- Materials science
Aqueous solution
Environmental pollution
02 engineering and technology
010402 general chemistry
021001 nanoscience & nanotechnology
01 natural sciences
Electrospinning
0104 chemical sciences
Surfaces, Coatings and Films
Electronic, Optical and Magnetic Materials
Biomaterials
Contact angle
Colloid and Surface Chemistry
Membrane
Wastewater
Chemical engineering
Nanofiber
0210 nano-technology
Polyimide
Subjects
Details
- ISSN :
- 00219797
- Volume :
- 532
- Database :
- OpenAIRE
- Journal :
- Journal of Colloid and Interface Science
- Accession number :
- edsair.doi.dedup.....aafca36eea5efad2358ec917c972fe76