Mechanochemically prepared graphene oxide GO|mc consists of a fraction of low-molecular-weight debris and a fraction of rather large graphene sheets (bwGO|mc, bw = base-washed). The content of the low-molecular-weight fraction in dispersions of GO|mc was found to be higher than for GO dispersions prepared by chemical methods. GO|mc exhibited photoluminescence in the visible region of the spectrum, the main contribution to which is made by the debris fraction. Conjugated carbon bonds are retained in the debris, which distinguishes this material from analogs synthesized by the chemical oxidation of graphite.
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This work was supported by the Targeted Research & Development Initiatives of the Science and Technology Center in Ukraine and the National Academy of Sciences of Ukraine and Targeted Comprehensive Fundamental Research Program of the National Academy of Sciences of Ukraine “Fundamental problems of creating new nanomaterials and nanotechnologies.”
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Translated from Teoreticheskaya i Éksperimental’naya Khimiya, Vol. 53, No. 2, pp. 88-93, March-April, 2017.
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Posudievsky, O.Y., Khazieieva, O.A., Kozarenko, O.A. et al. Effect of the Mechanochemical Preparation on the Fractional Composition and Spectral Characteristics of Graphene Oxide. Theor Exp Chem 53, 93–99 (2017). https://doi.org/10.1007/s11237-017-9504-z
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DOI: https://doi.org/10.1007/s11237-017-9504-z