Curtin University Homepage
  • Library
  • Help
    • Admin

    espace - Curtin’s institutional repository

    JavaScript is disabled for your browser. Some features of this site may not work without it.
    View Item 
    • espace Home
    • espace
    • Curtin Research Publications
    • View Item
    • espace Home
    • espace
    • Curtin Research Publications
    • View Item

    Investigation of Gas Permeability in Carbon Nanotube (CNT)-Polymer Matrix Membranes via Modifying CNTs with Functional Groups/Metals and Controlling Modification Location

    Access Status
    Fulltext not available
    Authors
    Ge, L.
    Zhu, Z.
    Li, F.
    Liu, Shaomin
    Wang, L.
    Tang, X.
    Rudolph, V.
    Date
    2011
    Type
    Journal Article
    
    Metadata
    Show full item record
    Citation
    Ge, Lei and Zhu, Zhonghua and Li, Feng and Liu, Shaomin and Wang, Li and Tang, Xuegang and Rudolph, Victor. 2011. Investigation of Gas Permeability in Carbon Nanotube (CNT)-Polymer Matrix Membranes via Modifying CNTs with Functional Groups/Metals and Controlling Modification Location. Journal of Physical Chemistry C. 115: pp. 6661-6670.
    Source Title
    Journal of Physical Chemistry C
    DOI
    10.1021/jp1120965
    ISSN
    1932-7447
    School
    Department of Chemical Engineering
    Remarks

    The website for Journal of Physical Chemistry C is at http://pubs.acs.org/journal/jpccck

    URI
    http://hdl.handle.net/20.500.11937/14352
    Collection
    • Curtin Research Publications
    Abstract

    Metal- or functional group-modified multiwalled carbon nanotubes (CNTs) were embedded into the poly(ether sulfone) (PES) polymer matrix to study the gas permeability of the nanocomposite membranes. Carboxyl-functionalized CNTs and Ru (Fe) metal-modified CNTs were prepared via acid oxidation and wet impregnation methods, respectively. The derived nanocomposite membranes show similar crystalline structure and CNT dispersion as well as improvement in gas permeation fluxes at low CNT concentration (<5 wt %). However, the CO2/N2 selectivity varies with different modification components. Compared with pure polymer membranes, those containing Ru-modified CNTs show higher gas selectivity, while Fe-modified CNT membranes show lower selectivity, and carboxyl CNT composite membranes are similar to pure PES membrane. By controlling Ru modification into CNT channels, poor gas selectivity of the corresponding membranes is observed. These results, combined with the results of density functional theory calculations, indicate that different gas adsorption behaviors are introduced via modification by metals or carboxyl functional groups and further influence the gas permeability. Based on both experimental and theoretical results, gas diffusion appears to pass through the interface between polymer chains and carbon nanotubes, rather than the CNT channels, in this nanocomposite system. Thereby, tailoring modification on the external surface of carbon nanotubes can be more effective for improving gas separation performance of CNT-based nanocomposite membranes.

    Related items

    Showing items related by title, author, creator and subject.

    • Synthesis of polymeric nanocomposite membranes for aqueous and non-aqueous media
      Rajaeian, Babak (2012)
      Thin film composite (TFC) membranes have long been used by many large-scale applications (i.e., water and wastewater treatment). Recently, conventional polymeric TFC membranes are facing with short longevity due to high ...
    • Mixed-matrix membranes with metal-organic framework-decorated CNT fillers for efficient CO2 separation
      Lin, R.; Ge, L.; Liu, Shaomin; Rudolph, V.; Zhu, Z. (2015)
      Carbon nanotube (CNT) mixed-matrix membranes (MMMs) show great potential to achieve superior gas permeance because of the unique structure of CNTs. However, the challenges of CNT dispersion in polymer matrix and elimination ...
    • Synthesis and evaluation of porous composite hydrogels for tissue engineering applications
      Li, Chao (2012)
      The purpose of this dissertation was to synthesize and evaluate porous poly(2- hydroxyethyl methacrylate) (PHEMA) and PHEMA composite hydrogels containing various concentrations of titanium dioxide (TiO2) nanoparticles, ...
    Advanced search

    Browse

    Communities & CollectionsIssue DateAuthorTitleSubjectDocument TypeThis CollectionIssue DateAuthorTitleSubjectDocument Type

    My Account

    Admin

    Statistics

    Most Popular ItemsStatistics by CountryMost Popular Authors

    Follow Curtin

    • 
    • 
    • 
    • 
    • 

    CRICOS Provider Code: 00301JABN: 99 143 842 569TEQSA: PRV12158

    Copyright | Disclaimer | Privacy statement | Accessibility

    Curtin would like to pay respect to the Aboriginal and Torres Strait Islander members of our community by acknowledging the traditional owners of the land on which the Perth campus is located, the Whadjuk people of the Nyungar Nation; and on our Kalgoorlie campus, the Wongutha people of the North-Eastern Goldfields.