Beads-on-String Structured Nanofibers for Smart and Reversible Oil/Water Separation with Outstanding Antifouling Property

Yuanfeng Wang, Chuilin Lai, Xiaowen Wang, Yang Liu, Huawen Hu, Yujuan Guo, Kaikai Ma, Bin Fei, John Haozhong Xin

Research output: Journal article publicationJournal articleAcademic researchpeer-review

68 Citations (Scopus)

Abstract

It is challenging to explore a unified solution for the treatment of oily wastewater from complex sources. Thus, membrane materials with flexible separation schemes are highly desired. Herein, we fabricated a smart membrane by electrospinning TiO2doped polyvinylidene fluoride (PVDF) nanofibers. The as-formed beads-on-string structure and hierarchical roughness of the nanofibers contribute to its superwetting/resisting property to liquids, which is desirable in oil/water separation. Switched simply by UV (or sunlight) irradiation and heating treatment, the smart membrane can realize reversible separation of oil/water mixtures by selectively allowing water or oil to pass through alone. Most importantly, the as-prepared nanofiber membrane possesses outstanding antifouling and self-cleaning performance resulting from the photocatalytic property of TiO2, which has practical significance in saving solvents and recycling materials. This work provides a route for fabricating cost-effective, easily scaled up, and recyclable membranes for on-demand oil/water separation in versatile situations, which can be of great usage in the new green separation technology.
Original languageEnglish
Pages (from-to)25612-25620
Number of pages9
JournalACS Applied Materials and Interfaces
Volume8
Issue number38
DOIs
Publication statusPublished - 28 Sep 2016

Keywords

  • antifouling
  • beads-on-string
  • nanofiber
  • oil/water separation
  • smart

ASJC Scopus subject areas

  • Materials Science(all)

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