Thin-Film Nanocomposite Forward-Osmosis Membranes on Hydrophilic Microfiltration Support with an Intermediate Layer of Graphene Oxide and Multiwall Carbon Nanotube

Wang Zhao, Huiyuan Liu, Yue Liu, Meipeng Jian, Li Gao, Huanting Wang, Xiwang Zhang

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41 Citations (Scopus)

Abstract

A novel thin-film nanocomposite forward-osmosis (FO) membrane was fabricated on hydrophilic nylon microfiltration (MF) support by interfacial polymerization with the assistance of an intermediate layer of graphene oxide and multiwall carbon nanotube (GO/MWCNT). The chemical composition, structure, and surface properties of the synthesized FO membranes were studied using various characterization methods. It was found that the GO/MWCNT composite layer not only provided ultrafast nanochannels for water transport but also reduced the thickness of the polyamide layer by up to 60%. As a result, the novel FO membrane exhibited a higher water flux and lower reverse salt flux compared with the membrane synthesized without the GO/MWCNT intermediate layer. This method offers promising opportunities to fabricate thin-film composite membranes on microfiltration substrates for FO application with inhibited concentration polarization phenomenon and expected separation performance.

Original languageEnglish
Pages (from-to)34464-34474
Number of pages11
JournalACS Applied Materials & Interfaces
Volume10
Issue number40
DOIs
Publication statusPublished - 10 Oct 2018

Keywords

  • forward osmosis
  • graphene oxide
  • interfacial polymerization
  • multiwall carbon nanotubes
  • thin-film composite

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