Journal
ACS APPLIED MATERIALS & INTERFACES
Volume 5, Issue 21, Pages 10597-10604Publisher
AMER CHEMICAL SOC
DOI: 10.1021/am404156k
Keywords
PS nanofibers; electrospinning; membrane; superhydrophobic; superoleophilic; oil-water separation
Funding
- National Research Foundation of Korea [2013R1A2A2A05005589]
- Korea government (MEST)
- Converging Research Center Program through the Ministry of Education, Science and Technology [2013K000186]
- Center for Inorganic Photovoltaic Materials [2012-0001169]
- Korea Research Council Industrial Science and Technology [B551179-08-03-00]
- Global Frontier R&D Program on Center for Hybrid Interface Materials (HIM) [2013-073298]
- Ministry of Science, ICT & Future Planning
- National Research Council of Science & Technology (NST), Republic of Korea [산업-일반-협동8] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
- National Research Foundation of Korea [2013R1A2A2A05005589] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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The ability to prepare solid surfaces with well-controlled superhydrophobic and superoleophilic properties is of paramount importance to water oil separation technology. Herein, we successfully prepared superhydrophobic-superoleophilic membranes by single-step deposition of polystyrene (PS) nanofibers onto a stainless steel mesh via electrospinning. The contact angles of diesel and water on the prepared PS nanofiber membrane were 0 degrees and 155 degrees +/- 30 degrees, respectively. Applications of the PS nanofiber membrane toward separating liquids with low surface tension, such as oil, from water were investigated in detail. Gasoline, diesel, and mineral oil were tested as representative low-viscosity oils. The PS nanofiber membranes efficiently separated several liters of oil from water in a single step, of only a few minutes' duration. The superhydrophobic PS nanofiber membrane selectively absorbs oil, and is highly efficient at oil water separation, making it a very promising material for oil spill remediation.
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