Oil-Water Separation Using a Self-Cleaning Underwater Superoleophobic Micro/Nanowire Hierarchical Nanostructured Membrane

Benny Yong Liang Tan, Zhaoyang Liu, Peng Gao, Ming Hang Tai, Darren Delai Sun

Research output: Contribution to journalArticle

6 Citations (Scopus)


In this study, we fabricated a novel micro/nanowire hierarchical membrane with flexible, self-cleaning and underwater superoleophobic properties for efficient oil-water separation under vacuum filtration. This novel membrane composed of ultralong copper microwires (MW) and functional TiO2 nanowires (NW). The ultralong copper microwires act as a scaffold, as well as providing mechanical flexibility for the membrane, which allow it to be operated under vacuum-driven condition. Meanwhile, underwater superoleophobic TiO2 nanowires membrane provides nano- scale pore size, ensuring the filtration of smaller oil droplets under vacuum condition. Moreover, the possession of the self-cleaning function of TiO2 nanowires allows the degradation of foulants and contaminants under UV irradiation, which promote the facile recovery of the used membrane. Clearly, the employment of this novel membrane can be considered as a practical option for efficient oil-water separations.

Original languageEnglish
Pages (from-to)1329-1338
Number of pages10
Issue number7
Publication statusPublished - 1 Jan 2016



  • copper microwire
  • copper microwires
  • flexible membrane
  • Oil-water separation
  • oil/water separation membrane
  • self cleaning
  • TiO nanowire
  • titanium dioxide nanowires
  • vacuum-driven, flexible

ASJC Scopus subject areas

  • Chemistry(all)

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