Bioinspired in situ growth of conversion films with underwater superoleophobicity and excellent self-cleaning performance.
Wax deposition during the production and transportation of crude oil is a global problem in oil industries. Fabrication of underwater self-cleaning materials can provide a new strategy to prohibit wax deposition. In this paper, conversion films on carbon steel with hierarchical micro/nanostructure are fabricated through a novel in situ alternating-current deposition method. The flower-like conversion films are composed of amorphous iron phosphate and present superhydrophilicity in air and superoleophobicity underwater. The conversion films can efficiently prevent the deposition of wax in water-contained crude oil, showing excellent self-cleaning performance. This facile and low-cost fabrication of a self-cleaning film provides a good strategy for underwater-oil prevention.
Key Laboratory of Aerospace Materials and Performance (Ministry of Education), School of Materials Science and Engineering, Beihang University , Beijing 100191, China.
Zhiwei
Z
Wang
Liqun
L
Zhu
Weiping
W
Li
Huicong
H
Liu
D002244:Carbon / Q000737:chemistry*; D057927:Hydrophobic and Hydrophilic Interactions; D049329:Nanostructures / Q000737:chemistry*; D059392:Petroleum Pollution; D013232:Steel / Q000737:chemistry; D013499:Surface Properties; D014877:Water Pollution, Chemical
D013232:Steel; D002244:Carbon