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Issue 13, 2017
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Three-level hierarchical superhydrophobic Cu–Zn coating on a steel substrate without chemical modification for self-cleaning property

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Abstract

A superhydrophobic Cu–Zn coating was fabricated on a steel surface by facile one-step electrodeposition, without being chemically modified by a low surface energy material. It was noted that three-level hierarchical structures, just like the surface morphology of a lotus leaf, were formed on the Cu–Zn coating surface via scanning electron microscopy (SEM) images. The water contact angle of the prepared Cu–Zn coating surface was 153.40°, and the sliding angle was less than 10°. From the aspect of chemical composition, it was characterized to confirm that the oxidation of Cu and Zn, and oxygen adsorption were the reasons for the superhydrophobicity. In terms of the surface morphology, based on the classical Wenzel and Cassie models, an idealized three-dimensional (3D) model was fabricated to demonstrate the rationality of the superhydrophobicity without chemical modification. Moreover, this three-level hierarchical Cu–Zn coating had stable superhydrophobicity, excellent self-cleaning properties, and stability.

Graphical abstract: Three-level hierarchical superhydrophobic Cu–Zn coating on a steel substrate without chemical modification for self-cleaning property

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Publication details

The article was received on 05 Feb 2017, accepted on 15 May 2017 and first published on 16 May 2017


Article type: Paper
DOI: 10.1039/C7NJ00427C
Citation: New J. Chem., 2017,41, 5436-5444
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    Three-level hierarchical superhydrophobic Cu–Zn coating on a steel substrate without chemical modification for self-cleaning property

    H. Li and S. Yu, New J. Chem., 2017, 41, 5436
    DOI: 10.1039/C7NJ00427C

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