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Metallic Impurities in Graphenes Prepared from Graphite Can Dramatically Influence Their Properties

Authors

  • Dr. Adriano Ambrosi,

    1. Division of Chemistry & Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 637371 Singapore (Singapore)
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  • Sze Yin Chee,

    1. Division of Chemistry & Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 637371 Singapore (Singapore)
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  • Bahareh Khezri,

    1. Division of Chemistry & Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 637371 Singapore (Singapore)
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  • Prof. Richard D. Webster,

    1. Division of Chemistry & Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 637371 Singapore (Singapore)
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  • Prof. Zdeněk Sofer,

    1. Institute of Chemical Technology, Department of Inorganic Chemistry, Technická 5, 166 28 Prague 6 (Czech Republic)
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  • Prof. Martin Pumera

    Corresponding author
    1. Division of Chemistry & Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 637371 Singapore (Singapore)
    • Division of Chemistry & Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 637371 Singapore (Singapore)
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  • M.P. thanks the Nanyang Assistant Professorship start-up fund (NTU), Z.S. thanks the Czech Science Foundation (grant No. 104/09/0621) and the Ministry of Education of the Czech Republic (research project No. MSM6046137302), S.Y.C. thanks URECA programme (NTU) for funding.

Abstract

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All at C? Graphenes prepared by the top-down exfoliation of graphite are shown to contain metallic impurities (see scheme, metal impurities shown as black dots). These impurities may dominate their properties and can have a negative influence on their potential applications.

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