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SCIENCE CHINA Technological Sciences, Volume 62 , Issue 9 : 1585-1595(2019) https://doi.org/10.1007/s11431-019-9533-y

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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  • ReceivedMar 8, 2019
  • AcceptedMay 29, 2019
  • PublishedJul 18, 2019

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.


Funded by

the National Natural Science Foundation of China(Grant,Nos.,51701240,&,41206063)

Key Research and Development Program of Shandong Province(Grant,No.,2017GGX20123)

and Fundamental Research Funds for the Central Universities(Grant,Nos.,19CX05001A,16CX05011A,&,17CX02063)


Acknowledgment

This work was supported by the National Natural Science Foundation of China (Grant Nos. 51701240 & 41206063), Key Research and Development Program of Shandong Province (Grant No. 2017GGX20123), and Fundamental Research Funds for the Central Universities (Grant Nos. 19CX05001A, 16CX05011A & 17CX02063).


Supplement

Supporting Information

The supporting information is available online at tech.scichina.com and link.springer.com. The supporting materials are published as submitted, without typesetting or editing. The responsibility for scientific accuracy and content remains entirely with the authors.


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