Magnet-induced temporary superhydrophobic coatings from one-pot synthesized hydrophobic magnetic nanoparticles.

Fang, Jian, Wang, Hongxia, Xue, Yuhua, Wang, Xungai and Lin, Tong 2010, Magnet-induced temporary superhydrophobic coatings from one-pot synthesized hydrophobic magnetic nanoparticles., ACS applied materials & interfaces, vol. 2, no. 5, pp. 1449-1455, doi: 10.1021/am100092b.

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Title Magnet-induced temporary superhydrophobic coatings from one-pot synthesized hydrophobic magnetic nanoparticles.
Author(s) Fang, JianORCID iD for Fang, Jian
Wang, HongxiaORCID iD for Wang, Hongxia
Xue, Yuhua
Wang, XungaiORCID iD for Wang, Xungai
Lin, TongORCID iD for Lin, Tong
Journal name ACS applied materials & interfaces
Volume number 2
Issue number 5
Start page 1449
End page 1455
Total pages 7
Publisher American Chemical Society
Place of publication Washington, D.C.
Publication date 2010-05-26
ISSN 1944-8244
Keyword(s) superhydrophobic
magnetic nanoparticles
one-pot synthesis
temporary coating
magnet-induced superhydrophobicity
fibre science
Summary In this paper, we report on the production of superhydrophobic coatings on various substrates (e.g., glass slide, silicon wafer, aluminum foil, plastic film, nanofiber mat, textile fabrics) using hydrophobic magnetic nanoparticles and a magnet-assembly technique. Fe3O4 magnetic nanoparticles functionalized with a thin layer of fluoroalkyl silica on the surface were synthesized by one-step coprecipitation of Fe2+/Fe3+ under an alkaline condition in the presence of a fluorinated alkyl silane. Under a magnetic field, the magnetic nanoparticles can be easily deposited on any solid substrate to form a thin superhydrophobic coating with water contact angle as high as 172°, and the surface superhydrophobicity showed very little dependence on the substrate type. The particulate coating showed reasonable durability because of strong aggregation effect of nanoparticles, but the coating layer can be removed (e.g., by ultrasonication) to restore the original surface feature of the substrates. By comparison, the thin particle layer deposited under no magnetic field showed much lower hydrophobicity. The main reason for magnet-induced superhydrophobic surfaces is theformation of nano- and microstructured surface features. Such a magnet-induced temporary superhydrophobic coating may have wide applications in electronic, biomedical, and defense-related areas.
Notes Publication Date (Web): April 16, 2010
Language eng
DOI 10.1021/am100092b
Field of Research 091205 Functional Materials
Socio Economic Objective 860699 Industrial Chemicals and Related Products not elsewhere classified
HERDC Research category C1 Refereed article in a scholarly journal
HERDC collection year 2010
Copyright notice ©2010, American Chemical Society
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