Superhydrophobic Surface: Functional Materials

A special issue of Coatings (ISSN 2079-6412). This special issue belongs to the section "Liquid–Fluid Coatings, Surfaces and Interfaces".

Deadline for manuscript submissions: closed (31 December 2023) | Viewed by 3253

Special Issue Editor


E-Mail Website
Guest Editor
College of Chemistry and Chemical Engineering, Qingdao University, Qingdao City, China
Interests: superhydrophobic surfaces; smart polymer hydrogel; 3D printing; marine biobased materials

Special Issue Information

Dear Colleagues,

Superhydrophobic surfaces, on which the water contact angle exceeds 150° and the contact angle hysteresis (sliding angle) is less than 10°, exhibit strong water repellence. In the past decade, superhydrophobic surfaces have revealed a cornucopia of novel structural and functional properties, exhibiting considerable importance in both fundamental research and practical applications. Fabricating methods and the working performance of superhydrophobic surfaces with multidisciplinary functionalities include self-cleaning, antifog, anticorrosion, fluidic drag reduction, antibiofouling, droplet transportation, and oil–water separation. To demonstrate the interesting developments in this field, we are assembling a Special Issue of Coatings to encourage researchers and to provide them with a platform to publish their novel studies. The topics of interest for this Special Issue, in particular, include (but are not restricted to):

  • Green and facile strategy to prepare superhydrophobic surface
  • Novel functional materials or coatings for superhydrophobicity
  • Durable or abrasion-resistant superhydrophobic surface
  • Transparent superhydrophobic coating
  • Superhydrophobic, superhydrophilic, or superamphiphilic surfaces for oil–water separation
  • Superhydrophobic surfaces for biomedical application
  • Superhydrophobic coatings in micro–nano devices

We look forward to receiving your contributions.

Dr. Zhong Xiong
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Coatings is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • superhydrophobic
  • multifunction
  • coating
  • amphiphilic
  • durable superhydrophobicity

Published Papers (2 papers)

Order results
Result details
Select all
Export citation of selected articles as:

Research

13 pages, 5939 KiB  
Article
Novel Collection Equipment Loaded with Superhydrophobic Sponge for Continuous Oil/Water Separation from Offshore Environments
by Xi Yan, Yan Xie, Xuejia Sheng, Shucai Zhang and Xiangning Song
Coatings 2023, 13(3), 573; https://doi.org/10.3390/coatings13030573 - 7 Mar 2023
Viewed by 1291
Abstract
Currently, frequent oil spill accidents caused by transportation, storage, and usage may lead to extensive damage to marine ecosystems. Effective methods for oil spillage recovery from offshore environments are still urgently in demand. A superhydrophobic sponge (MS@PVC@SiO2) was obtained via a [...] Read more.
Currently, frequent oil spill accidents caused by transportation, storage, and usage may lead to extensive damage to marine ecosystems. Effective methods for oil spillage recovery from offshore environments are still urgently in demand. A superhydrophobic sponge (MS@PVC@SiO2) was obtained via a facile two-step method for rapid oil adsorption, and a piece of novel collection equipment loaded with MS@PVC@SiO2 was developed for in situ continuous oil/seawater separation. The results showed that MS@PVC@SiO2 exhibits excellent water repellence, compressibility, and durability. Furthermore, the obtained MS@PVC@SiO2 shows high diesel oil adsorption capacity (32 g/g), and excellent recyclability (up to 200 times). The collection equipment demonstrates highly selective oil adsorption capacity and good stability in real seawater. The maximum possible recovery capacity of collection equipment was 557.784 L/h with 98% efficiency, which was much higher than that of commercial disc oil collectors (119.8 L/h). The recovery performance was effectively improved by introducing MS@PVC@SiO2, due to its large specific area and enough storage space. Moreover, even after continuous operation for 58 h in seawater, the collection equipment remained at a high recovery capacity. The results indicate that both MS@PVC@SiO2 and the collection equipment have great application perspectives in practical marine oil spillage recovery. Full article
(This article belongs to the Special Issue Superhydrophobic Surface: Functional Materials)
Show Figures

Figure 1

12 pages, 2310 KiB  
Article
Adjustable Underwater Gas Transportation Using Bioinspired Superhydrophobic Elastic String
by Yaping Sun, Meichen Liu, Xinlei Li, Deshuai Sun, Yanzhi Xia and Zhong Xiong
Coatings 2022, 12(5), 638; https://doi.org/10.3390/coatings12050638 - 6 May 2022
Viewed by 1446
Abstract
Dynamic and precise manipulation of the gas flow in a liquid environment through a facile and reliable approach is of great importance for directional gas transportation and multiphase chemical reactions. In this research, elastic superhydrophobic strings were prepared by a one-step, non-fluorinated dip-coating [...] Read more.
Dynamic and precise manipulation of the gas flow in a liquid environment through a facile and reliable approach is of great importance for directional gas transportation and multiphase chemical reactions. In this research, elastic superhydrophobic strings were prepared by a one-step, non-fluorinated dip-coating strategy. The surface-treatment string demonstrated a good superaerophilicity underwater. By simply elongating or shortening superaerophilic strings, the gas flux underwater was precisely manipulated in a gas-siphon underwater experiment. The result reveals that a large strain of the treated string induces a low gas flow, and a rope woven with more strings results in a larger range of gas flow regulation. The elastic superhydrophobic/superaerophilic string was utilized to adjust the reaction time of carbon dioxide and sodium hydroxide aqueous solution successfully. Furthermore, in a wet oxidation experiment for treating simulated flue gas composed of nitric oxide (NO), nitrogen and oxygen, superhydrophobic and stretched strings with a strain of 200% demonstrated a 7.9% higher NO removal efficiency than that of untreated strings. Interestingly, NO removal efficiency can be regulated by mechanical stretching of gas-conducting strings. We believe that this facile and low-cost approach provides a valid method of on-demand manipulation of the gas flow for underwater gas transportation. Full article
(This article belongs to the Special Issue Superhydrophobic Surface: Functional Materials)
Show Figures

Graphical abstract

Back to TopTop