Stable superhydrophobic surface via carbon nanotubes coated with a ZnO thin film

L. Huang; Shu Ping Lau; H. Y. Yang; E. S.P. Leong; Siu Fung Yu; S. Prawer

doi:10.1021/jp046549s

Stable superhydrophobic surface via carbon nanotubes coated with a ZnO thin film

L. Huang, Shu Ping Lau, H. Y. Yang, E. S.P. Leong, Siu Fung Yu, S. Prawer

Research output: Journal article publication › Journal article › Academic research › peer-review

350 Citations (Scopus)

Abstract

We report the formation of a stable superhydrophobic surface via aligned carbon nanotubes (CNTs) coated with a zinc oxide (ZnO) thin film. The CNT template was synthesized by chemical vapor deposition on an Fe-N catalyst layer. The ZnO film, with a low surface energy, was deposited on the CNT template by the filtered cathodic vacuum arc technique. Contact angle measurement reveals that the surface of the ZnO-coated CNTs is superhydrophobic with water contact angle of 159°. Unlike the uncoated CNTs surface, the ZnO-coated CNTs surface shows no sign of water seepage even after a prolonged period of time. The wettability of the surface can be reversibly changed from superhydrophobicity to hydrophilicity by alternation of ultraviolet (UV) irradiation and dark storage.

Original language	English
Pages (from-to)	7746-7748
Number of pages	3
Journal	Journal of Physical Chemistry B
Volume	109
Issue number	16
DOIs	https://doi.org/10.1021/jp046549s
Publication status	Published - 28 Apr 2005
Externally published	Yes

ASJC Scopus subject areas

Physical and Theoretical Chemistry
Surfaces, Coatings and Films
Materials Chemistry

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10.1021/jp046549s

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abstract = "We report the formation of a stable superhydrophobic surface via aligned carbon nanotubes (CNTs) coated with a zinc oxide (ZnO) thin film. The CNT template was synthesized by chemical vapor deposition on an Fe-N catalyst layer. The ZnO film, with a low surface energy, was deposited on the CNT template by the filtered cathodic vacuum arc technique. Contact angle measurement reveals that the surface of the ZnO-coated CNTs is superhydrophobic with water contact angle of 159°. Unlike the uncoated CNTs surface, the ZnO-coated CNTs surface shows no sign of water seepage even after a prolonged period of time. The wettability of the surface can be reversibly changed from superhydrophobicity to hydrophilicity by alternation of ultraviolet (UV) irradiation and dark storage.",

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AU - Huang, L.

AU - Lau, Shu Ping

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AU - Yu, Siu Fung

AU - Prawer, S.

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AB - We report the formation of a stable superhydrophobic surface via aligned carbon nanotubes (CNTs) coated with a zinc oxide (ZnO) thin film. The CNT template was synthesized by chemical vapor deposition on an Fe-N catalyst layer. The ZnO film, with a low surface energy, was deposited on the CNT template by the filtered cathodic vacuum arc technique. Contact angle measurement reveals that the surface of the ZnO-coated CNTs is superhydrophobic with water contact angle of 159°. Unlike the uncoated CNTs surface, the ZnO-coated CNTs surface shows no sign of water seepage even after a prolonged period of time. The wettability of the surface can be reversibly changed from superhydrophobicity to hydrophilicity by alternation of ultraviolet (UV) irradiation and dark storage.

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Stable superhydrophobic surface via carbon nanotubes coated with a ZnO thin film

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