Kang, Sang Wook Hong, Jinkee Park, Jong Hyuk Mun, Sung Hyun Kim, Jong Hak Cho, Jinhan Char, Kookheon Kang, Yong Soo 2024-01-20T23:00:43Z 2024-01-20T23:00:43Z 2021-09-03 2008-08-01 0376-7388 https://pubs.kist.re.kr/handle/201004/133245 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. (C) 2008 Elsevier B.V. All rights reserved. English ELSEVIER SCIENCE BV SILVER NANOPARTICLES AQUEOUS-SOLUTION PERVAPORATION SURFACE AG DEHYDRATION SEPARATION REDUCTION SILICA WATER Nanocomposite membranes containing positively polarized gold nanoparticles for facilitated olefin transport Article 10.1016/j.memsci.2008.04.047 1 JOURNAL OF MEMBRANE SCIENCE, v.321, no.1, pp.90 - 93 JOURNAL OF MEMBRANE SCIENCE 321 1 90 93 scie scopus 000258012300013 2-s2.0-46049083197 Engineering, Chemical Polymer Science Engineering Polymer Science Article SILVER NANOPARTICLES AQUEOUS-SOLUTION PERVAPORATION SURFACE AG DEHYDRATION SEPARATION REDUCTION SILICA WATER Au nanoparticle membrane facilitated transport olefin