Synthesis of silver halide nanocomposites templated by amphiphilic graft copolymer and their use as olefin carrier for facilitated transport membranes

Joo Hwan Koh, Sang Wook Kang, Jung Tae Park, Jin Ah Seo, Jong Hak Kim, Yong Soo Kang

Research output: Contribution to journalArticlepeer-review

32 Citations (Scopus)

Abstract

A novel amphiphilic comb-like copolymer consisting of poly(vinyl chloride) (PVC) main chains and poly(4-vinyl pyridine) (P4VP) side chains, i.e. PVC-g-P4VP with 65:35 wt% is synthesized via atom transfer radical polymerization (ATRP). This self-assembled copolymer is used to template the growth of silver bromide (AgBr) nanoparticles with diameters of 10-50 nm, as characterized by UV-vis spectroscopy, X-ray diffraction (XRD) and transmission electron microscopy (TEM). Upon introduction of ionic liquid, i.e. 1-methyl-3-octylimidazolium nitrate (MOIM+NO3-), the surface of AgBr nanoparticles is more partially positively charged due to the interactions between NO3- ions and the surfaces of nanoparticles, as revealed by FT-Raman and X-ray photon spectroscopy (XPS). We also demonstrate the ability of AgBr as a new type of olefin carrier by tuning the interactions of positively charged AgBr with the C{double bond, long}C bond of olefin molecules. As a result, the membranes containing AgBr nanocomposites exhibit highly stable separation performances for propylene/propane mixture, i.e. a mixed gas selectivity of 6 and a permeance of 5.7 GPU.

Original languageEnglish
Pages (from-to)49-56
Number of pages8
JournalJournal of Membrane Science
Volume339
Issue number1-2
DOIs
Publication statusPublished - 2009 Sep 1

Bibliographical note

Funding Information:
This work was supported by the Korea Science and Engineering Foundation (KOSEF) grant funded by the Korea government (MEST) (R11-2007-050-04003-0 and R01-2008-000-10112-0). YS Kang acknowledges the support by Energy Technology R&D program (2006-E-ID11-P-13) under the Korea Ministry of Commerce, Industry and Energy (MOCIE) and the support by Korea Science and Engineering Foundation (KOSEF) by the Korean Government (MEST) (R01-2008-000-10112-0).

All Science Journal Classification (ASJC) codes

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

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