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

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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

Bibliographical note

Funding Information:
This work was supported by Energy Technology R&D program (2006-E-ID11-P-13) under the Korea Ministry of Commerce, Industry and Energy (MOCIE). KC acknowledges the financial support of NSI-NCRC and the Ministry of Education through the Brain Korea 21 Program at Seoul National University. This work was also supported by ERC Program of KOSEF grant funded by the Korea government (MEST) (R11-2005-048-00000-0).

All Science Journal Classification (ASJC) codes

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


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