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Abstract

A novel fouling-resistant nanofiltration mixed-matrix membrane was obtained by the incorporation of 2D boron nitride nanosheets (BNNS) in polyethersulfone (PES). The addition of just 0.05 wt% of BNNS into the PES matrix led to a 4-fold increase in pure water permeance with a 10% decrease in the rejection of the dye Rose Bengal; up to 95% rejection of humic acid and nearly 100% flux recovery over two cycles in cross-flow fouling tests without the need for chemical cleansing. This performance is attributed to the uniform distribution of the BNNS in the PES matrix, observed via Raman mapping, and the surface chemistry and structure of the BNNS, which hydrophilised the polymer matrix and reduced its surface roughness. The low amount of BNNS filler needed to render the mixed-matrix membrane fouling-resistant opens the way to its use in waste-water treatment applications where organic fouling remains a major challenge.

Original languageEnglish
Pages (from-to)949-956
Number of pages8
JournalJournal of Membrane Science
Volume563
Early online date3 Jul 2018
DOIs
Publication statusPublished - 1 Oct 2018

Fingerprint

Nanofiltration membranes
fouling
Boron nitride
Nanosheets
boron nitrides
Fouling
membranes
Membranes
matrices
rejection
Humic Substances
Rose Bengal
waste water
Nanofiltration
Membrane fouling
water treatment
cross flow
Water Purification
Waste Water
Surface chemistry

Keywords

  • Boron nitride nanosheets
  • Fouling
  • Nanofiltration
  • PES

ASJC Scopus subject areas

  • Biochemistry
  • Materials Science(all)
  • Physical and Theoretical Chemistry
  • Filtration and Separation

Cite this

Fouling resistant 2D boron nitride nanosheet – PES nanofiltration membranes. / Low, Ze Xian; Ji, Jing; Blumenstock, David; Chew, Yong Min; Wolverson, Daniel; Mattia, Davide.

In: Journal of Membrane Science, Vol. 563, 01.10.2018, p. 949-956.

Research output: Contribution to journalArticle

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AU - Wolverson, Daniel

AU - Mattia, Davide

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