Role of thickness and intercalated water in the facile reduction of graphene oxide employing camera flash

Saswata Bose, Lawrence T. Drzal

    Research output: Contribution to journalArticle

    • 4 Citations

    Abstract

    Graphene oxide (GO) is a potential precursor for the bulk production of graphene as the synthetic route is simple and cost-effective. Typically, reduction of GO is a time-consuming process and involves either toxic/hazardous reducing agents or high temperature treatment. Herein, we report the role of intercalated water and thickness of GO films towards the reduction of GO employing simple camera flash. A fast, simple and single camera flash instantaneously causes the deoxygenation reaction of GO without employing hazardous/toxic chemical reductants at room temperature. Successful reduction of GO employing camera flash has been verified via XRD, Raman and UV-vis spectroscopic analyses. Flash-reduced graphene shows a relatively high conductivity value of 740 S m-1 with a C/O ratio of around 9.5. Intercalated water molecules facilitate the reduction by electron-hole pair formation. It has also been found that the intercalated water facilitates the reduction of GO up to a certain film thickness. However, the intensity of light passing through to the backside of a too thick film decreases significantly, causing incomplete reduction.

    Original languageEnglish (US)
    Article number075702
    JournalNanotechnology
    Volume25
    Issue number7
    DOIs
    StatePublished - Feb 21 2014

    Profile

    Graphene
    Oxides
    Cameras
    Water
    Collagen
    Temperature
    Acetanilides
    Reducing agents
    Thick films
    Oxide films
    Film thickness
    Molecules
    Electrons
    Costs
    Alcuronium
    Hospital Departments
    Osteoporosis

    Keywords

    • Electron-hole pair
    • Flash reduction
    • Graphene oxide
    • Intercalated water

    ASJC Scopus subject areas

    • Bioengineering
    • Chemistry(all)
    • Electrical and Electronic Engineering
    • Mechanical Engineering
    • Mechanics of Materials
    • Materials Science(all)

    Cite this

    Role of thickness and intercalated water in the facile reduction of graphene oxide employing camera flash. / Bose, Saswata; Drzal, Lawrence T.

    In: Nanotechnology, Vol. 25, No. 7, 075702, 21.02.2014.

    Research output: Contribution to journalArticle

    Bose, Saswata; Drzal, Lawrence T. / Role of thickness and intercalated water in the facile reduction of graphene oxide employing camera flash.

    In: Nanotechnology, Vol. 25, No. 7, 075702, 21.02.2014.

    Research output: Contribution to journalArticle

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