Enhanced gas permeability by fabricating functionalized multi-walled carbon nanotubes and polyethersulfone nanocomposite membrane

Ge, L, Zhu, ZH and Rudolph, V (2011) Enhanced gas permeability by fabricating functionalized multi-walled carbon nanotubes and polyethersulfone nanocomposite membrane. Separation and Purification Technology, 78 1: 76-82. doi:10.1016/j.seppur.2011.01.024


Author Ge, L
Zhu, ZH
Rudolph, V
Title Enhanced gas permeability by fabricating functionalized multi-walled carbon nanotubes and polyethersulfone nanocomposite membrane
Journal name Separation and Purification Technology   Check publisher's open access policy
ISSN 1383-5866
1873-3794
Publication date 2011-03-24
Sub-type Article (original research)
DOI 10.1016/j.seppur.2011.01.024
Volume 78
Issue 1
Start page 76
End page 82
Total pages 7
Place of publication Kidlington, Oxford, United Kingdom
Publisher Pergamon
Collection year 2012
Language eng
Formatted abstract
Nanocomposite membranes consisting of 1-10 wt.% multi-walled carbon nanotubes (MWCNTs) embedded in polyethersulfone (PES) have been fabricated via phase inversion method by using N-methyl-2-pyrrolidone as solvent and their transportation properties are evaluated. The functional groups on MWCNTs, crystalline structure and MWCNTs dispersion were characterized by Fourier transform infrared spectroscopy, X-ray diffraction spectra, field emission scanning electron microscopy and transmission electron microscopy. The gas permeation fluxes of the derived nanocomposite membranes are increased by ∼67% without sacrificing selectivity at 5 wt.% MWCNTs introduced. According to diffusivity and solubility results derived from time lag method, the carboxyl groups on MWCNTs have stronger interaction with CO2, which can increase the solubility of polar gas and limit the solubility of non-polar gas, thus benefiting the CO2/N2 gas selectivity.
© 2011 Elsevier B.V. All rights reserved.
Keyword Carbon nanotubes
Nanocomposite membrane
Permselectivity
Gas separation
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Chemical Engineering Publications
Official 2012 Collection
 
Versions
Version Filter Type
Citation counts: TR Web of Science Citation Count  Cited 37 times in Thomson Reuters Web of Science Article | Citations
Scopus Citation Count Cited 41 times in Scopus Article | Citations
Google Scholar Search Google Scholar
Created: Wed, 11 May 2011, 18:15:52 EST by Professor Victor Rudolph on behalf of School of Chemical Engineering