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Issue 45, 2015
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Supersonically blown nylon-6 nanofibers entangled with graphene flakes for water purification

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Abstract

Water purification membranes, capable of purifying a few to tens of milliliters of aqueous methylene blue solution in a minute, were produced by supersonically blowing graphene flakes with a nylon-6 polymeric solution. The solution-blown nylon-6 nanofibers became entangled with graphene flakes thereby locking the graphene flakes within the frame of the bendable two-dimensional film structure. This method, which yielded a 5 × 7 cm2-sized membrane in less than 10 seconds, is commercially viable owing to fast fabrication and scalability. We show that our water purification device allows a flow rate range of 0.3–4 L h−1 with a membrane area of just 5 cm2, under a pressure difference of 0.5–3.5 bar. If the membrane were scaled up to 0.5 m2, it could provide 300–4000 L h−1 flow rate, an ample supply for home use.

Graphical abstract: Supersonically blown nylon-6 nanofibers entangled with graphene flakes for water purification

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Article information


Submitted
22 Sep 2015
Accepted
13 Oct 2015
First published
16 Oct 2015

Nanoscale, 2015,7, 19027-19035
Article type
Paper

Supersonically blown nylon-6 nanofibers entangled with graphene flakes for water purification

J. Lee, D. Kim, M. G. Mali, S. S. Al-Deyab, M. T. Swihart and S. S. Yoon, Nanoscale, 2015, 7, 19027
DOI: 10.1039/C5NR06549F

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