4.7 Article

Bio-inspired robust superhydrophilic/underwater superoleophobic coating with lubrication, anti-crude oil fouling and anti-corrosion performances

Journal

JOURNAL OF COLLOID AND INTERFACE SCIENCE
Volume 616, Issue -, Pages 720-729

Publisher

ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jcis.2022.02.090

Keywords

Underwater superoleophobic; Anti-crude oil; Drag reduction; Anti-corrosion; Oil-water separation

Funding

  1. Northeast Petroleum University Youth Science Foundation [15011030810]
  2. Chemical Engineering and Technology Superiority Discipline Support Pro-gram of Northeast Petroleum University [15041260271]
  3. Research Startup Fund of Northeast Petroleum University [1305021885]
  4. National Science Founation for Distinguished Young Scholars of China [51925403]
  5. Major Research plan of the National Natural Science Foundation of China [2019002]
  6. National Science Foundation of China [21676052, 21606042]

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A robust underwater superoleophobic coating was fabricated by spraying the mixture of polyethyleneimine (PEI) and TiO2 on epoxy resin (E44) surface. The coating exhibited good physical and chemical stability, as well as excellent drag reduction, anti-fouling performance, and anti-corrosive performance in water.
The crude oil spill accidents cause numerous crude oil contaminations and oily wastewater. Underwater superoleophobic coating has excellent ability to resist crude oil contamination and separate oily wastewater. But it's hard to keep stable performance against the physical or chemical attack. Herein, a robust underwater superoleophobic coating was fabricated by spraying the mixture of polyethyleneimine (PEI) and TiO2 on epoxy resin (E44) surface. Besides the good physical and chemical stability, the coating exhibited better drag reduction, anti-fouling performance and anti-corrosive performance in water compared with the commercially hydrophilic coating. The stainless steel mesh (SSM), coated by the E44/PEI/ TiO2 coating, could separate different oil-water emulsions with a high oil rejection greater than 99.7%. (c) 2022 Elsevier Inc.

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