EFFECT OF THE MECHANOCHEMICAL PREPARATION ON THE FRACTIONAL COMPOSITION AND SPECTRAL CHARACTERISTICS OF GRAPHENE OXIDE

摘要

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.