Facile preparation of superhydrophobic surfaces based on metal oxide nanoparticles

A novel method for fabrication of superhydrophobic surfaces was developed by facile coating various metal oxide nanoparticles, including ZnO, Al2O3 and Fe3O4, on various substrates followed by treatment with polydimethylsiloxane (PDMS) via chemical vapor deposition (CVD) method. Using ZnO nanopartic...

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Bibliographic Details
Published in:Applied surface science 2014-06, Vol.303, p.473-480
Main Authors: BAO, Xue-Mei, CUI, Jin-Feng, SUN, Han-Xue, LIANG, Wei-Dong, ZHU, Zhao-Qi, JIN AN, YANG, Bao-Ping, LA, Pei-Qing, AN LI
Format: Article
Language:English
Subjects:
Chemical vapor deposition
Coating
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Condensed matter: structure, mechanical and thermal properties
Cross-disciplinary physics: materials science
rheology
Exact sciences and technology
Fourier transforms
Infrared spectroscopy
Metal oxides
Nanoparticles
Physics
Silicone resins
Zinc oxide
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Summary:A novel method for fabrication of superhydrophobic surfaces was developed by facile coating various metal oxide nanoparticles, including ZnO, Al2O3 and Fe3O4, on various substrates followed by treatment with polydimethylsiloxane (PDMS) via chemical vapor deposition (CVD) method. Using ZnO nanoparticles as a model, the changes in the surface chemical composition and crystalline structures of the metal oxide nanoparticles by PDMS treatment were investigated by X-ray photoelectron spectroscopy (XPS), X-ray powder diffraction (XRD) and Fourier transform infrared (FTIR) analysis. The results show that the combination of the improved surface roughness generated from of the nanoparticles aggregation with the low surface-energy of silicon-coating originated from the thermal pyrolysis of PDMS would be responsible for the surface superhydrophobicity. By a simple dip-coating method, we show that the metal oxide nanoparticles can be easily coated onto the surfaces of various textural and dimensional substrates, including glass slide, paper, fabric or sponge, for preparation of superhydrophobic surfaces for different purpose. The present strategy may provide an inexpensive and new route to surperhydrophobic surfaces, which would be of technological significance for various practical applications especially for separation of oils or organic contaminates from water.
ISSN:0169-4332
1873-5584
DOI:10.1016/j.apsusc.2014.03.029