Superhydrophobic surface of TiO2 hierarchical nanostructures fabricated by Ti anodization

Junye Dong; Xin Ouyang; Jie Han; Wei Qiu; Wei Gao

doi:10.1016/j.jcis.2014.01.014

Superhydrophobic surface of TiO2 hierarchical nanostructures fabricated by Ti anodization

J Colloid Interface Sci. 2014 Apr 15:420:97-100. doi: 10.1016/j.jcis.2014.01.014. Epub 2014 Jan 17.

Authors

Junye Dong¹, Xin Ouyang², Jie Han², Wei Qiu², Wei Gao²

Affiliations

¹ Department of Chemical & Materials Engineering, The University of Auckland, Auckland 1142, New Zealand. Electronic address: jdon853@aucklanduni.ac.nz.
² Department of Chemical & Materials Engineering, The University of Auckland, Auckland 1142, New Zealand.

PMID: 24559706
DOI: 10.1016/j.jcis.2014.01.014

Abstract

A hierarchical structure of TiO2 with disordered nanowires on top of regular nanotubes was fabricated. With organic monolayers, it showed stronger superhydrophobic properties than regular nanotubes. The surface roughness was further enhanced by removing the dense nanowires layer, resulting in 172° water contact angle. The potential application for aquatic devices was explored by the treated Ti mesh which showed striking floating stability.

Keywords: Anodization; Floating ability; Hierarchical structure; Superhydrophobicity; Titanium.