Photoinduced cleaning of water-soluble dyes on patterned superhydrophilic/superhydrophobic substrates

Xuemin Zhang; Junhu Zhang; Zhiyu Ren; Xun Zhang; Tian Tian; Yunan Wang; Fengxia Dong; Bai Yang

doi:10.1039/B9NR00055K

Photoinduced cleaning of water-soluble dyes on patterned superhydrophilic/superhydrophobic substrates

Xuemin Zhang,^a Junhu Zhang,*^a Zhiyu Ren,^b Xun Zhang,^a Tian Tian,^a Yunan Wang,^a Fengxia Dong^a and Bai Yang^a

* Corresponding authors

^a State Key Lab of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun, P. R. China
E-mail: zjh@jlu.edu.cn
Fax: +86-0431-85193423
Tel: +86-0431-85168478

^b Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education, Laboratory of Physical Chemistry, School of Chemistry and Materials Science, Heilongjiang University, Harbin 150080, P. R. China

Abstract

Herein we present a novel but simple method to fabricate photoinduced cleaning substrates with patterned superhydrophobic hierarchical silicon cone arrays (SCAs) and superhydrophilic TiO₂nanorod clusters (TNCs). In our experiment, the photoinduced cleaning properties of the obtained substrate are investigated by repeatedly adsorbing and decomposing rhodamine B (RhB) molecules for at least six cycles. In addition, we demonstrate that the low-surface-energy coating on the superhydrophobic areas is stable, resulting in the high wettability contrast being well preserved during the renewal process. This straightforward method may open up new possibilities for the practical use of microchips with patterned superhydrophobic and superhydrophilic areas.

Supplementary files

Publication details

The article was received on 05 May 2009, accepted on 24 Aug 2009 and first published on 30 Sep 2009

Article type: Paper

DOI: 10.1039/B9NR00055K

Citation: Nanoscale, 2010,2, 277-281

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Photoinduced cleaning of water-soluble dyes on patterned superhydrophilic/superhydrophobic substrates

X. Zhang, J. Zhang, Z. Ren, X. Zhang, T. Tian, Y. Wang, F. Dong and B. Yang, Nanoscale, 2010, 2, 277
DOI: 10.1039/B9NR00055K
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Nanoscale

Photoinduced cleaning of water-soluble dyes on patterned superhydrophilic/superhydrophobic substrates

Abstract

Supplementary files

Publication details

Photoinduced cleaning of water-soluble dyes on patterned superhydrophilic/superhydrophobic substrates

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