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Determination of the Local Chemical Structure of Graphene Oxide and Reduced Graphene Oxide

Authors

  • Kris Erickson,

    1. University of California at Berkeley and, Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720 (USA)
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  • Rolf Erni,

    1. National Center for Electron Microscopy, Lawrence Berkeley National Laboratory and, Electron Microscopy Center, Empa Swiss Federal Laboratories for Materials Testing and Research, Ueberlandstr. 129, CH-8600 Dübendorf (Switzerland)
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  • Zonghoon Lee,

    1. National Center for Electron Microscopy, Lawrence Berkeley National Laboratory, Berkeley, CA 94720 (USA)
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  • Nasim Alem,

    1. University of California at Berkeley and, Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720 (USA)
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  • Will Gannett,

    1. University of California at Berkeley and, Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720 (USA)
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  • Alex Zettl

    Corresponding author
    1. University of California at Berkeley and, Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720 (USA)
    • University of California at Berkeley and, Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720 (USA).
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Abstract

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The local atomic structure of graphene oxide (GO) and reduced annealed graphene oxide (raGO) is determined via ultra-high-resolution transmission electron microscopy. We find that the proposed and desired return to graphene from GO is not possible through the synthetic route employed. The detailed structure of GO, previously unknown, is revealed as mottled, with few square nanometer graphitic regions separated by highly oxidized regions.

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