Underwater superoleophobicity of a robust rough titanium dioxide surface formed on titanium substrate by acid treatment

Shunsuke Nishimoto, Misaki Ota, Yoshikazu Kameshima, Michihiro Miyake

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

A robust rough titanium dioxide (TiO2) surface was prepared by acid treatment of a Ti plate and mesh. By ultraviolet (UV) irradiation, the surface exhibited superhydrophilicity and superoleophilicity in air and underwater superoleophobicity. Due to the rough surface, the underwater superoleophobicity was observed, even after dark storage for 1 week under the ambient atmosphere. The robust rough TiO2 mesh with a pore size of approximately 150μm functioned as a high speed oil/water separation filter with high mechanical durability and self-cleaning property.

Original languageEnglish
Pages (from-to)33-40
Number of pages8
JournalColloids and Surfaces A: Physicochemical and Engineering Aspects
Volume464
DOIs
Publication statusPublished - Jan 5 2015

Keywords

  • Oil-water separation
  • Superhydrophilicity
  • TiO photocatalyst
  • Underwater superoleophobicity

ASJC Scopus subject areas

  • Surfaces and Interfaces
  • Physical and Theoretical Chemistry
  • Colloid and Surface Chemistry

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