Photoinduced underwater superoleophobicity of TiO2 thin films

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

Research output: Contribution to journalArticlepeer-review

83 Citations (Scopus)


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
Issue number23
Publication statusPublished - Jun 11 2013

ASJC Scopus subject areas

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


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