Low Drag Porous Ship with Superhydrophobic and Superoleophilic Surface for Oil Spills Cleanup

Gang Wang, Zhixiang Zeng, He Wang, Lin Zhang, Xiaodong Sun, Yi He, Longyang Li, Xuedong Wu, Tianhui Ren*, Qunji Xue

*Corresponding author for this work

Research output: Contribution to journalArticle (Academic Journal)peer-review

57 Citations (Scopus)

Abstract

To efficiently remove and recycle oil spills, we construct aligned ZnO nanorod arrays on the surface of the porous stainless steel wire mesh to fabricate a porous unmanned ship (PUS) with properties of superhydrophobicity, superoleophilicity, and low drag by imitating the structure of nonwetting leg of water strider. The superhydrophobicity of the PUS is stable, which can support 16.5 cm water column with pore size of 100 μm. Water droplet can rebound without adhesion. In the process of oil/water separation, when the PUS contacts with oil, the oil is quickly pulled toward and penetrates into the PUS automatically. The superhydrophobicity and low water adhesion force of the PUS surface endow the PUS with high oil recovery capacity (above 94%) and drag-reducing property (31% at flowing velocity of 0.38m/s). In addition, the PUS has good corrosion resistance and reusability. We further investigate the wetting behavior of water and oil, oil recovery capacity, drag-reducing property, and corrosion resistance of the PUS after oil absorbed. The PUS surface changes significantly from superhydrophobic to hydrophobic after absorbing oil. However, the oil absorbed PUS possesses better drag-reducing property and corrosion resistance due to the changes of the motion state of the water droplets.

Original languageEnglish
Pages (from-to)26184-26194
Number of pages11
JournalACS Applied Materials and Interfaces
Volume7
Issue number47
DOIs
Publication statusPublished - 2 Dec 2015

Keywords

  • anticorrosion
  • biomimetic
  • drag-reducing
  • oil/water separation
  • pours metal mesh
  • superhydrophobic
  • superoleophilic
  • unmanned ship

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