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    A facile and novel approach towards carboxylic acid functionalization of multiwalled carbon nanotubes and efficient water dispersion

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    Type
    Article
    Authors
    Rehman, Ata Ur
    Abbas, Syed Mustansar
    Ammad, Hafiz Muhammad
    Badshah, Amin
    Ali, Zulfiqar
    Anjum, Dalaver H. cc
    KAUST Department
    Imaging and Characterization Core Lab
    Advanced Nanofabrication, Imaging and Characterization Core Lab
    Core Labs
    Date
    2013-10
    Permanent link to this record
    http://hdl.handle.net/10754/562997
    
    Metadata
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    Abstract
    A convenient, cheap and mild covalent functionalization route for multiwalled carbon nanotubes (MWCNTs) have been developed for the first time. The MWCNTs were treated with wet chemical oxidants (NaNO2/HCl, HNO3/H2O2) in order to modify MWCNTs with carboxyl groups. Surface functionality groups and morphology of MWCNTs were analyzed by FTIR, TGA, SEM and TEM. The results consistently confirmed the formation of carboxyl functionalities on MWCNTs, while the structure of MWCNTs has remained relatively intact. Functionalized MWCNTs showed good dispersion in aqueous media than untreated MWCNTs. Results show that NaNO2/HCl treatment is best suited for the chemical functionalization, giving optimum surface carboxyl groups and minimum length shortening of MWCNTs. © 2013 Elsevier B.V.
    Citation
    Rehman, A., Abbas, S. M., Ammad, H. M., Badshah, A., Ali, Z., & Anjum, D. H. (2013). A facile and novel approach towards carboxylic acid functionalization of multiwalled carbon nanotubes and efficient water dispersion. Materials Letters, 108, 253–256. doi:10.1016/j.matlet.2013.07.009
    Publisher
    Elsevier BV
    Journal
    Materials Letters
    DOI
    10.1016/j.matlet.2013.07.009
    ae974a485f413a2113503eed53cd6c53
    10.1016/j.matlet.2013.07.009
    Scopus Count
    Collections
    Articles; Imaging and Characterization Core Lab

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