Nanocomposite membranes containing positively polarized gold nanoparticles for facilitated olefin transport

Sang Wook Kang, Jinkee Hong, Jong Hyuk Park, Sung Hyun Mun, Jong Hak Kim, Jinhan Cho, Kookheon Char, Yong Soo Kang

Research output: Contribution to journalArticlepeer-review

36 Citations (Scopus)


Positively polarized gold nanoparticles have been demonstrated for use as stable olefin carriers for facilitated olefin transport membranes. The formation and size of gold nanoparticles stabilized by 4-dimethylaminopyridine (DMAP) were monitored using X-ray diffraction (XRD), transmission electron microscopy (TEM) and UV-visible spectroscopy. Nanocomposite membranes that deliver high separation performance for olefin/paraffin mixtures were prepared by dispersing gold nanoparticles stabilized by DMAP in a polymer matrix, poly(vinyl pyrrolidone) (PVP). X-ray photoelectron spectroscopy (XPS) and zeta potential measurements revealed that gold nanoparticles stabilized by DMAP exhibited a high positive polarity, which is responsible for the reversible interaction between the gold nanoparticles and olefin molecules. Compared to neat PVP membranes, the composite membranes consisting of PVP and the polarized gold nanoparticles showed stable and enhanced separation of olefin/paraffin mixtures.

Original languageEnglish
Pages (from-to)90-93
Number of pages4
JournalJournal of Membrane Science
Issue number1
Publication statusPublished - 2008 Aug 1
Externally publishedYes


  • Au nanoparticle
  • Facilitated transport
  • Membrane
  • Olefin

ASJC Scopus subject areas

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


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