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Science China Technological Sciences

, Volume 62, Issue 9, pp 1585–1595 | Cite as

Robust superhydrophobic polyurethane sponge functionalized with perfluorinated graphene oxide for efficient immiscible oil/water mixture, stable emulsion separation and crude oil dehydration

  • Ning CaoEmail author
  • JingYu Guo
  • Rabah Boukherroub
  • QingGuo Shao
  • XiaoBei Zang
  • Jin Li
  • XueQiang Lin
  • Hong Ju
  • EnYang Liu
  • ChaoFan Zhou
  • HuiPing Li
Article
  • 20 Downloads

Abstract

In recent years, graphene oxide (GO), prepared by the modified Hummers’ method, and its derivatives have become a focus of research owing to their outstanding physical and chemical properties and low cost. Drawing inspiration from the mussel protein, a facile and environmentally-friendly method was employed to fabricate superhydrophobic/superoleophilic reduced graphene oxide (rGO) derivative. The preparation comprises two steps: coating GO nanosheets with polydopamine (PDA) and subsequent reaction with 1H,1H,2H,2H-perfluorodecanethiol. Due to the excellent adhesive ability of PDA, the resulting fPDA modified rGO nanosheets (rGO-fPDA) were firmly immobilized onto polyurethane (PU) sponge skeleton by a simple drop-coating method. The as-prepared rGO-fPDA functionalized sponge exhibited superhydrophobic behavior with a water contact angle of 162°±2°, high organic adsorption capacity, recyclability and stable oil/water separation behavior under different acidic/alkaline conditions. Due to its facile fabrication technique and outstanding properties, the superhydrophobic-superoleophilic PU-rGO-fPDA sponge holds great promise as an oil adsorbent for cleaning up large-scale pollution of oil and organic solvents, and dehydrating crude oil.

Keywords

graphene oxide superhydrophobic sponge adsorption oil/water separation emulsion 

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Robust superhydrophobic polyurethane sponge functionalized with perfluorinated graphene oxide for efficient immiscible oil/water mixture, stable emulsion separation and crude oil dehydration

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Copyright information

© Science China Press and Springer-Verlag GmbH Germany, part of Springer Nature 2019

Authors and Affiliations

  • Ning Cao
    • 1
    • 2
    Email author
  • JingYu Guo
    • 2
  • Rabah Boukherroub
    • 3
  • QingGuo Shao
    • 2
  • XiaoBei Zang
    • 2
  • Jin Li
    • 2
  • XueQiang Lin
    • 2
  • Hong Ju
    • 2
  • EnYang Liu
    • 2
  • ChaoFan Zhou
    • 2
  • HuiPing Li
    • 4
  1. 1.Key Laboratory of Unconventional Oil & Gas Development, Ministry of EducationChina University of Petroleum (East China)QingdaoChina
  2. 2.School of Materials Science and EngineeringChina University of Petroleum (East China)QingdaoChina
  3. 3.Univ. Lille, CNRS, Centrale Lille, ISENUniv. Valenciennes, UMR 8520, IEMNLilleFrance
  4. 4.School of Materials Science and EngineeringShandong University of Science and TechnologyQingdaoChina

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