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Updated: May 7, 2026

Rendering SiO2/Si Surfaces Omniphobic by Carving Gas-Entrapping Microtextures Comprising Reentrant and Doubly Reentrant Cavities or Pillars
Published on: February 11, 2020
Bioinspired in situ growth of conversion films with underwater superoleophobicity and excellent self-cleaning
Zhiwei Wang1, Liqun Zhu, Weiping Li
1Key Laboratory of Aerospace Materials and Performance (Ministry of Education), School of Materials Science and Engineering, Beihang University , Beijing 100191, China.
Abstract:
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.

