Effects of centrifugation on the carboxyl modified single-walled carbon nanotubes suspension

Jung Ah Lee, Byung Chul Lee, Sang Myung Lee, Kyeong Kap Paek, Byeong Kwon Ju, Yun Hi Lee, Hyun Joon Shin

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Abstract

    The centrifugal method is adopted to investigate the properties of carboxyl-terminated single-walled carbon nanotube (c-SWCNT) suspension. The chemical properties of each supernatant sample are confirmed with the Fourier transform infrared analysis (FTIR) and are not influenced by centrifugal process. The optical properties observed by ultraviolet-visible-near infrared spectroscopy (UV-VIS-NIR) show that the oxidation debris co-existed with c-SWCNTs in supernatant samples is a material creating perturbation at the electronic structure of the c-SWCNT. The G-band in the Raman results displays the red shift toward the low frequency side. The red shift of G-band is estimated because the removal of the oxidation debris by centrifugal method induces the de-doping effect on the electrical structure of SWCNTs.

    Original languageEnglish
    Title of host publicationNanotechnology 2009
    Subtitle of host publicationFabrication, Particles, Characterization, MEMS, Electronics and Photonics - Technical Proceedings of the 2009 NSTI Nanotechnology Conference and Expo, NSTI-Nanotech 2009
    Pages397-400
    Number of pages4
    Publication statusPublished - 2009
    EventNanotechnology 2009: Fabrication, Particles, Characterization, MEMS, Electronics and Photonics - 2009 NSTI Nanotechnology Conference and Expo, NSTI-Nanotech 2009 - Houston, TX, United States
    Duration: 2009 May 32009 May 7

    Publication series

    NameNanotechnology 2009: Fabrication, Particles, Characterization, MEMS, Electronics and Photonics - Technical Proceedings of the 2009 NSTI Nanotechnology Conference and Expo, NSTI-Nanotech 2009
    Volume1

    Other

    OtherNanotechnology 2009: Fabrication, Particles, Characterization, MEMS, Electronics and Photonics - 2009 NSTI Nanotechnology Conference and Expo, NSTI-Nanotech 2009
    Country/TerritoryUnited States
    CityHouston, TX
    Period09/5/309/5/7

    Keywords

    • Centrifugation
    • SWCNTs
    • Separation

    ASJC Scopus subject areas

    • Electrical and Electronic Engineering
    • Electronic, Optical and Magnetic Materials
    • Condensed Matter Physics

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