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Issue 17, 2013
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Fabrication of a ZnO nanocolumnar thin film on a glass slide and its reversible switching from a superhydrophobic to a superhydrophilic state

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Abstract

A simple, cost effective way to deposit ZnO thin films on glass slides has been observed under modified hydrothermal (MHT) conditions. The nanocolumnar growth of ZnO on glass surfaces takes place as a result of the hydrolysis of zinc sulfate by ethanolamine at 100 °C without employing any templates or surfactants. The evolved superhydrophobic thin film becomes hydrophilic upon UV light exposure and the film reverts back to its original superhydrophobic character upon storage in the dark. The water contact angle switches back and forth from 154° ± 1° to 15°. Characterization of the ZnO thin films and the nanocolumnar growth mechanism have been discussed.

Graphical abstract: Fabrication of a ZnO nanocolumnar thin film on a glass slide and its reversible switching from a superhydrophobic to a superhydrophilic state

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Publication details

The article was received on 12 Dec 2012, accepted on 14 Feb 2013 and first published on 14 Feb 2013


Article type: Paper
DOI: 10.1039/C3RA40312B
RSC Adv., 2013,3, 5937-5944

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    Fabrication of a ZnO nanocolumnar thin film on a glass slide and its reversible switching from a superhydrophobic to a superhydrophilic state

    C. Mondal, M. Ganguly, A. K. Sinha, J. Pal and T. Pal, RSC Adv., 2013, 3, 5937
    DOI: 10.1039/C3RA40312B

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