Ionic liquid as a solvent and the long-term separation performance in a polymer/silver salt complex membrane

Sang Wook Kang, Kookheon Char, Jong Hak Kim, Yong Soo Kang

Research output: Contribution to journalArticle

15 Citations (Scopus)

Abstract

The reduction behavior of silver ions to silver nanoparticles is an important topic in polymer/silver salt complex membranes to facilitate olefin transport, as this has a significant effect on the long-term performance stability of the membrane. In this study, the effects of the solvent type on the formation of silver nanoparticles, as well as the long-term membrane performance of a solid polymer/silver salt complex membrane were investigated. These effects were assessed for solid complexes of poly(N-vinyl pyrrolidone) (PVP)/AgBF4, using either an ionic liquid (IL), acetonitrile (ACN) or water as the solvent for the membrane preparation. The membrane performance test showed that long-term stability was strongly dependent on the solvent type, which increased in the following order: IL > ACN ≫ water. The formation of silver nanoparticles was more favorable with the solvent type in the reverse order, as supported by UV-visible spectroscopy. The poor stability of the PVP/AgBF4 membrane when water was used as the solvent might have been due to the small amount of water present in the silver-polymer complex membranes actively participating in the reduction reaction of the silver ions into silver nanoparticles. Conversely, the higher stability of the PVP/AgBF4 membrane when an IL was used as the solvent was attributable to the cooperative coordination of silver ions with the IL, as well as with the polymer matrix, as confirmed by FTIR spectroscopy.

Original languageEnglish
Pages (from-to)167-172
Number of pages6
JournalMacromolecular Research
Volume15
Issue number2
DOIs
Publication statusPublished - 2007 Jan 1

Fingerprint

Ionic Liquids
Silver
Ionic liquids
Polymers
Salts
Membranes
Nanoparticles
Water
Ions
Acetonitrile
Spectroscopy
Alkenes
Polymer matrix
Olefins

All Science Journal Classification (ASJC) codes

  • Chemical Engineering(all)
  • Organic Chemistry
  • Polymers and Plastics
  • Materials Chemistry

Cite this

@article{0c4fc092c11440a39a84af1ef3a9eb7c,
title = "Ionic liquid as a solvent and the long-term separation performance in a polymer/silver salt complex membrane",
abstract = "The reduction behavior of silver ions to silver nanoparticles is an important topic in polymer/silver salt complex membranes to facilitate olefin transport, as this has a significant effect on the long-term performance stability of the membrane. In this study, the effects of the solvent type on the formation of silver nanoparticles, as well as the long-term membrane performance of a solid polymer/silver salt complex membrane were investigated. These effects were assessed for solid complexes of poly(N-vinyl pyrrolidone) (PVP)/AgBF4, using either an ionic liquid (IL), acetonitrile (ACN) or water as the solvent for the membrane preparation. The membrane performance test showed that long-term stability was strongly dependent on the solvent type, which increased in the following order: IL > ACN ≫ water. The formation of silver nanoparticles was more favorable with the solvent type in the reverse order, as supported by UV-visible spectroscopy. The poor stability of the PVP/AgBF4 membrane when water was used as the solvent might have been due to the small amount of water present in the silver-polymer complex membranes actively participating in the reduction reaction of the silver ions into silver nanoparticles. Conversely, the higher stability of the PVP/AgBF4 membrane when an IL was used as the solvent was attributable to the cooperative coordination of silver ions with the IL, as well as with the polymer matrix, as confirmed by FTIR spectroscopy.",
author = "Kang, {Sang Wook} and Kookheon Char and Kim, {Jong Hak} and Kang, {Yong Soo}",
year = "2007",
month = "1",
day = "1",
doi = "10.1007/BF03218769",
language = "English",
volume = "15",
pages = "167--172",
journal = "Macromolecular Research",
issn = "1598-5032",
publisher = "Polymer Society of Korea",
number = "2",

}

Ionic liquid as a solvent and the long-term separation performance in a polymer/silver salt complex membrane. / Kang, Sang Wook; Char, Kookheon; Kim, Jong Hak; Kang, Yong Soo.

In: Macromolecular Research, Vol. 15, No. 2, 01.01.2007, p. 167-172.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Ionic liquid as a solvent and the long-term separation performance in a polymer/silver salt complex membrane

AU - Kang, Sang Wook

AU - Char, Kookheon

AU - Kim, Jong Hak

AU - Kang, Yong Soo

PY - 2007/1/1

Y1 - 2007/1/1

N2 - The reduction behavior of silver ions to silver nanoparticles is an important topic in polymer/silver salt complex membranes to facilitate olefin transport, as this has a significant effect on the long-term performance stability of the membrane. In this study, the effects of the solvent type on the formation of silver nanoparticles, as well as the long-term membrane performance of a solid polymer/silver salt complex membrane were investigated. These effects were assessed for solid complexes of poly(N-vinyl pyrrolidone) (PVP)/AgBF4, using either an ionic liquid (IL), acetonitrile (ACN) or water as the solvent for the membrane preparation. The membrane performance test showed that long-term stability was strongly dependent on the solvent type, which increased in the following order: IL > ACN ≫ water. The formation of silver nanoparticles was more favorable with the solvent type in the reverse order, as supported by UV-visible spectroscopy. The poor stability of the PVP/AgBF4 membrane when water was used as the solvent might have been due to the small amount of water present in the silver-polymer complex membranes actively participating in the reduction reaction of the silver ions into silver nanoparticles. Conversely, the higher stability of the PVP/AgBF4 membrane when an IL was used as the solvent was attributable to the cooperative coordination of silver ions with the IL, as well as with the polymer matrix, as confirmed by FTIR spectroscopy.

AB - The reduction behavior of silver ions to silver nanoparticles is an important topic in polymer/silver salt complex membranes to facilitate olefin transport, as this has a significant effect on the long-term performance stability of the membrane. In this study, the effects of the solvent type on the formation of silver nanoparticles, as well as the long-term membrane performance of a solid polymer/silver salt complex membrane were investigated. These effects were assessed for solid complexes of poly(N-vinyl pyrrolidone) (PVP)/AgBF4, using either an ionic liquid (IL), acetonitrile (ACN) or water as the solvent for the membrane preparation. The membrane performance test showed that long-term stability was strongly dependent on the solvent type, which increased in the following order: IL > ACN ≫ water. The formation of silver nanoparticles was more favorable with the solvent type in the reverse order, as supported by UV-visible spectroscopy. The poor stability of the PVP/AgBF4 membrane when water was used as the solvent might have been due to the small amount of water present in the silver-polymer complex membranes actively participating in the reduction reaction of the silver ions into silver nanoparticles. Conversely, the higher stability of the PVP/AgBF4 membrane when an IL was used as the solvent was attributable to the cooperative coordination of silver ions with the IL, as well as with the polymer matrix, as confirmed by FTIR spectroscopy.

UR - http://www.scopus.com/inward/record.url?scp=34247127748&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=34247127748&partnerID=8YFLogxK

U2 - 10.1007/BF03218769

DO - 10.1007/BF03218769

M3 - Article

AN - SCOPUS:34247127748

VL - 15

SP - 167

EP - 172

JO - Macromolecular Research

JF - Macromolecular Research

SN - 1598-5032

IS - 2

ER -