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Issue 15, 2019, Issue in Progress
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Superhydrophobic and superoleophilic graphene aerogel for adsorption of oil pollutants from water

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Abstract

Three-dimensional graphene based materials with superhydrophobic/superoleophilic attributes are highly desirable for water treatment. The graphene aerogel (GA) was prepared by hydrothermal reaction of the graphene oxide (GO) solution in the presence of dopamine followed by freeze-drying. The subsequent surface modification of GA using fluoroalkylsilane occurred by a vapor–liquid deposition process. The superhydrophobic graphene aerogel (SGA) fabricated from GA exhibits superhydrophobicity and superoleophilicity with the water contact angle of 156.5° and the oil contact angle of 0°. With this property, SGA could selectively adsorb various types of oils/organic solvents from the oil–water mixture. Moreover, the SGA possesses excellent low bulk density (9.6 mg cm−3), high absorption capacity (110–230 fold weight gain), and superior adsorption recyclability. With all these desirable features, the SGA is a promising candidate for oil-polluted water remediation.

Graphical abstract: Superhydrophobic and superoleophilic graphene aerogel for adsorption of oil pollutants from water

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Publication details

The article was received on 12 Jan 2019, accepted on 07 Mar 2019 and first published on 14 Mar 2019


Article type: Paper
DOI: 10.1039/C9RA00279K
Citation: RSC Adv., 2019,9, 8569-8574
  • Open access: Creative Commons BY-NC license
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    Superhydrophobic and superoleophilic graphene aerogel for adsorption of oil pollutants from water

    H. Wang, C. Wang, S. Liu, L. Chen and S. Yang, RSC Adv., 2019, 9, 8569
    DOI: 10.1039/C9RA00279K

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