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    Dye adsorption on layered graphite oxide

    Access Status
    Fulltext not available
    Authors
    Bradder, Philip
    Ling, Sie King
    Wang, Shaobin
    Liu, Shaomin
    Date
    2011
    Type
    Journal Article
    
    Metadata
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    Citation
    Bradder, Philip and Ling, Sie King and Wang, Shaobin and Liu, Shaomin. 2011. Dye adsorption on layered graphite oxide. Journal of Chemical & Engineering Data. 56 (1): pp. 138-141.
    Source Title
    Journal of Chemical & Engineering Data
    DOI
    10.1021/je101049g
    ISSN
    00219568
    School
    Department of Chemical Engineering
    Remarks

    The website for Journal of Chemical & Engineering Data is at <a href="http://pubs.acs.org/journal/jceaax">http://pubs.acs.org/journal/jceaax</a>

    URI
    http://hdl.handle.net/20.500.11937/41734
    Collection
    • Curtin Research Publications
    Abstract

    Graphite oxide (GO) was prepared by a modified Hummers−Offeman method and was tested as an adsorbent for the removal of dyes in aqueous solution. The structure of GO was characterized by N2 adsorption, X-ray diffraction (XRD), and Fourier transform infrared (FT-IR) spectroscopy. It is found that GO does not show a significant change in surface area, but the layered graphene structure was expanded, and several surface oxygen functional groups were formed, which play a significant role in adsorption. The amount of the dyes, methylene blue and malachite green, adsorbed on the GO was much higher than that on graphite, and the adsorption capacity based on the Langmuir isotherm is (351 and 248) mg·g−1, respectively, much higher than activated carbon. The adsorption mechanism was proposed as electrostatic attraction.

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