Reduced graphene oxide-coated cotton as an efficient absorbent in oil-water separation

Reduced graphene oxide-coated cotton as an efficient absorbent in oil-water separation The present work describes the fabrication of superhydrophobic and superoleophilic reduced graphene oxide-coated cotton (rGO@cotton) by a facile one-step hydrothermal used method for oil-water separation. Results from X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), and field emission scanning electron microscopy (FESEM) analysis show the formation of a composite structure with the presence of an ultrathin coating of rGO on the cotton fibers. The contact angle (CA) between a static water droplet and the rGO@cotton surface in air was measured ~ 162.9°, which suggests the formation of a superhydrophobic surface on the synthesized product. Moreover, the rGO@cotton showed excellent absorption capacity for oils where 1 g of rGO@cotton was able to remove ~ 30–40 g of various oils in the first cycle from oil-water mixtures. The flexible rGO@cotton was reusable and demonstrated oil retention up to ~ 35–50% at the tenth cycle using simple sorption-mechanical squeezing test. Overall, the present work identifies that the rGO@cotton is an efficient absorbent for effective separation of oil from oil-water mixtures. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Advanced Composites and Hybrid Materials Springer Journals

Reduced graphene oxide-coated cotton as an efficient absorbent in oil-water separation

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Publisher
Springer International Publishing
Copyright
Copyright © 2017 by Springer International Publishing AG, part of Springer Nature
Subject
Materials Science; Ceramics, Glass, Composites, Natural Materials; Materials Engineering; Polymer Sciences
ISSN
2522-0128
eISSN
2522-0136
D.O.I.
10.1007/s42114-017-0019-9
Publisher site
See Article on Publisher Site

Abstract

The present work describes the fabrication of superhydrophobic and superoleophilic reduced graphene oxide-coated cotton (rGO@cotton) by a facile one-step hydrothermal used method for oil-water separation. Results from X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), and field emission scanning electron microscopy (FESEM) analysis show the formation of a composite structure with the presence of an ultrathin coating of rGO on the cotton fibers. The contact angle (CA) between a static water droplet and the rGO@cotton surface in air was measured ~ 162.9°, which suggests the formation of a superhydrophobic surface on the synthesized product. Moreover, the rGO@cotton showed excellent absorption capacity for oils where 1 g of rGO@cotton was able to remove ~ 30–40 g of various oils in the first cycle from oil-water mixtures. The flexible rGO@cotton was reusable and demonstrated oil retention up to ~ 35–50% at the tenth cycle using simple sorption-mechanical squeezing test. Overall, the present work identifies that the rGO@cotton is an efficient absorbent for effective separation of oil from oil-water mixtures.

Journal

Advanced Composites and Hybrid MaterialsSpringer Journals

Published: Dec 7, 2017

References

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