Thin film nanocomposite membranes of PIM-1 and graphene oxide/ZIF-8 nanohybrids for organophilic pervaporation

Boya Qiu, Monica Alberto, Sajjad Mohsenpour, Andrew B. Foster, Shengzhe Ding, Zunmin Guo, Shaojun Xu, Stuart M. Holmes, Peter M. Budd, Xiaolei Fan, Patricia Gorgojo

Research output: Journal PublicationArticlepeer-review

Abstract

In this work, thin film nanocomposite (TFN) membranes of super-glassy polymer PIM-1 containing zeolitic imidazolate framework-8 (ZIF-8)/graphene oxide (GO) composites (ZG) have been prepared by dip-coating onto water pre-impregnated polyvinylidene fluoride (PVDF) substrates. Higher flux and improved separation factors as compared to bare PIM-1 thin film composite (TFC) membranes have been achieved in organophilic pervaporation; for an aqueous feed solution with 5 wt% of butanol at 65 °C, a total permeate flux of 7.9 ± 0.69 kg m−2h−1 and a separation factor (βBtOH/H2O) of 29.9 ± 1.99 have been obtained with a TFC membrane containing 0.5 wt% of ZG filler. The pervaporation separation index (PSI) of this membrane (228 kg m−2h−1) is amongst the highest values reported in the literature. This excellent performance is attributed to the formation of a defect-free PIM-1 active layer (<1 μm) and the hydrophobic nature of the ZG fillers.

Original languageEnglish
Article number121693
JournalSeparation and Purification Technology
Volume299
DOIs
Publication statusPublished - 15 Oct 2022
Externally publishedYes

Keywords

  • Graphene oxide (GO)
  • PIM-1
  • Thin-film nanocomposite (TFN) membrane
  • ZIF-8/GO
  • pervaporation (PV)

ASJC Scopus subject areas

  • Analytical Chemistry
  • Filtration and Separation

Fingerprint

Dive into the research topics of 'Thin film nanocomposite membranes of PIM-1 and graphene oxide/ZIF-8 nanohybrids for organophilic pervaporation'. Together they form a unique fingerprint.

Cite this