Photoinduced underwater superoleophobicity of TiO2 thin films

Yusuke Sawai, Shunsuke Nishimoto, Yoshikazu Kameshima, Eiji Fujii, Michihiro Miyake

Research output: Contribution to journalArticle

65 Citations (Scopus)

Abstract

The photoinduced wettabilities of water, n-hexadecane, dodecane, and n-heptane on a flat TiO2 surface prepared by a sol-gel method-based coating were investigated. An amphiphilic surface produced by UV irradiation exhibited underwater superoleophobicity with an extremely high static oil contact angle (CA) of over 160. The TiO2 surface almost completely repelled the oil droplet in water. A robust TiO2 surface with no fragile nanomicrostructure was fabricated on a Ti mesh with a pore size of approximately 150 μm. The fabricated mesh was found to be applicable as an oil/water separation filter.

Original languageEnglish
Pages (from-to)6784-6789
Number of pages6
JournalLangmuir
Volume29
Issue number23
DOIs
Publication statusPublished - Jun 11 2013

Fingerprint

oils
Thin films
Oils
mesh
thin films
water
Water
heptanes
wettability
flat surfaces
Heptane
gels
Sol-gel process
Pore size
Contact angle
porosity
Wetting
coatings
filters
irradiation

ASJC Scopus subject areas

  • Electrochemistry
  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Materials Science(all)
  • Spectroscopy

Cite this

Photoinduced underwater superoleophobicity of TiO2 thin films. / Sawai, Yusuke; Nishimoto, Shunsuke; Kameshima, Yoshikazu; Fujii, Eiji; Miyake, Michihiro.

In: Langmuir, Vol. 29, No. 23, 11.06.2013, p. 6784-6789.

Research output: Contribution to journalArticle

Sawai, Yusuke ; Nishimoto, Shunsuke ; Kameshima, Yoshikazu ; Fujii, Eiji ; Miyake, Michihiro. / Photoinduced underwater superoleophobicity of TiO2 thin films. In: Langmuir. 2013 ; Vol. 29, No. 23. pp. 6784-6789.
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