High-efficiency separation performance of oil-water emulsions of polyacrylonitrile nanofibrous membrane decorated with metal-organic frameworks

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalNot applicablepeer-review

4 Scopus Citations
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Author(s)

  • Hui Li
  • Lei Zhu
  • Tianchao Guo
  • Xiao Li
  • Wei Xing
  • Qingzhong Xue

Related Research Unit(s)

Detail(s)

Original languageEnglish
Pages (from-to)61-69
Journal / PublicationApplied Surface Science
Volume476
Early online date9 Jan 2019
Publication statusPublished - 15 May 2019

Abstract

A nanofibrous polyacrylonitrile membrane decorated with metal-organic frameworks (MOFs) of UiO-66-NH2 is prepared via a simple and flexible self-assemble method. It is found that the membrane shows high-efficiency separation performance of oil-water emulsions, due to the hydrophilic carboxyl and amino groups of UiO-66-NH2 and the gaps between neighboring UiO-66-NH2. Remarkably, solely driven by gravity (∼0.01 bar), the obtained membrane can effectively separate oil-water emulsions with an excellent separation efficiency (>99%, TOC < 10 mg/L) and a high flux (2107 Lm−2 h−1). It is demonstrated that the hydrophilic carboxyl and amino groups of UiO-66-NH2 enhance the superhydrophilicity and underwater superoleophobicity of the membrane so as to greatly improve the antifouling properties of the membrane. Besides, because the size of gaps between neighboring UiO-66-NH2 is mostly much smaller than that of oil drops and the UiO-66-NH2 are underwater oleophobic, the oil drops hardly enter the gaps between neighboring UiO-66-NH2 so that the gaps provide much more water flow tunnels, which obviously enhance the flux of the membrane. In this study, we present a new avenue of building MOFs loaded nanofibrous membrane with excellent oil-water separation performance.

Research Area(s)

  • Antifouling, Electrospun, Metal-organic frameworks, Oil-water separation, Superhydrophilicity

Citation Format(s)

High-efficiency separation performance of oil-water emulsions of polyacrylonitrile nanofibrous membrane decorated with metal-organic frameworks. / Li, Hui; Zhu, Lei; Zhang, Jianqiang; Guo, Tianchao; Li, Xiao; Xing, Wei; Xue, Qingzhong.

In: Applied Surface Science, Vol. 476, 15.05.2019, p. 61-69.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalNot applicablepeer-review