Superoleophobic Surfaces from Nanomaterials or Nanostructures

A special issue of Nanomaterials (ISSN 2079-4991). This special issue belongs to the section "Synthesis, Interfaces and Nanostructures".

Deadline for manuscript submissions: closed (20 June 2023) | Viewed by 1298

Special Issue Editors

School of Materials Science and Engineering, Southeast University, Nanjing 211189, China
Interests: wettability; functional coatings; colloids and interfaces; environmental functional materials
Special Issues, Collections and Topics in MDPI journals
Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China
Interests: superwetting coatings and polymer/clay nanocomposites and their applications in self-cleaning, battery separators and solar evaporation

Special Issue Information

Dear Colleagues,

Superoleophobic surfaces are defined as surfaces that have contact angles larger than 150° and sliding angles lower than 10° for various oil droplets with low surface tension. For decades, superoleophobic surfaces obtained through biomimetic techniques have triggered giant billows in the field of nanomaterials. In the beginning, inspired by the natural oil-repellency of leafhoppers and springtails, researchers utilize re-entrant structures (locked air cushion) and low-surface-energy substances (mainly fluorinated compounds) to fabricate superoleophobic surfaces in air. Later, fish scale provided another preparation strategy for underwater superoleophobic surfaces by utilizing superhydrophilicity (locked water cushion) in the air. Nanomaterials and nanostructures can enhance the effect of air or water cushioning between oil and surfaces by stacking to form multi-scale rough structures. At the same time, a low/extreme-surface-energy state can be achieved by chemical modification of nanomaterials. To date, a wide range of multifunctional artificial superoleophobic surfaces have been fabricated, with promising applications in fundamental research and industrial applications such as oil proofing, self-cleaning, chemical shielding, anti-blocking, chemical shielding, anti-corrosion, oil–water separation and droplet manipulation.

The present Special Issue aims to introduce the latest progress in superoleophobic surfaces. Since 2007, as the research on the oil repellency mechanisms of superoleophobic surfaces has gradually deepened, potential strategies including but not limited to self-similar structures, protective micron skeletons, binders, as well as hydrogen and chemical bonding have been gradually proposed and have significantly improved the robustness and durability of superoleophobic coatings. In the present Special Issue, we have invited contributions from leading groups in the field with the aim of giving a balanced view of the current state-of-the-art research in this discipline.

Prof. Dr. Youfa Zhang
Prof. Dr. Junping Zhang
Guest Editors

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Keywords

  • superoleophobic
  • nanomaterials or nanostructures
  • re-entrant structures
  • low-surface-energy substances
  • fundamental research
  • multifunctional
  • bioengineering
  • industrial applications
  • robustness and durability

Published Papers (1 paper)

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Research

12 pages, 3346 KiB  
Article
Preparation of Mechanically Stable Superamphiphobic Coatings via Combining Phase Separation of Adhesive and Fluorinated SiO2 for Anti-Icing
by Jinfei Wei, Weidong Liang and Junping Zhang
Nanomaterials 2023, 13(12), 1872; https://doi.org/10.3390/nano13121872 - 16 Jun 2023
Cited by 2 | Viewed by 992
Abstract
Superamphiphobic coatings have widespread application potential in various fields, e.g., anti-icing, anti-corrosion and self-cleaning, but are seriously limited by poor mechanical stability. Here, mechanically stable superamphiphobic coatings were fabricated by spraying the suspension composed of phase-separated silicone-modified polyester (SPET) adhesive microspheres with fluorinated [...] Read more.
Superamphiphobic coatings have widespread application potential in various fields, e.g., anti-icing, anti-corrosion and self-cleaning, but are seriously limited by poor mechanical stability. Here, mechanically stable superamphiphobic coatings were fabricated by spraying the suspension composed of phase-separated silicone-modified polyester (SPET) adhesive microspheres with fluorinated silica (FD-POS@SiO2) on them. The effects of non-solvent and SPET adhesive contents on the superamphiphobicity and mechanical stability of the coatings were studied. Due to the phase separation of SPET and the FD-POS@SiO2 nanoparticles, the coatings present a multi-scale micro-/nanostructure. Combined with the FD-POS@SiO2 nanoparticles of low surface energy, the coatings present outstanding static and dynamic superamphiphobicity. Meanwhile, the coatings present outstanding mechanical stability due to the adhesion effect of SPET. In addition, the coatings present outstanding chemical and thermal stability. Moreover, the coatings can obviously delay the water freezing time and decrease the icing adhesion strength. We trust that the superamphiphobic coatings have widespread application potential in the anti-icing field. Full article
(This article belongs to the Special Issue Superoleophobic Surfaces from Nanomaterials or Nanostructures)
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