Dependence of Structure of Multilayer Graphene Oxide on Degree of Graphitization of Initial Graphite
It was shown that the structure of multilayer graphene oxide (GrO) synthesized by Tour method depends substantially on the degree of graphitization (g) and on the particle size of initial graphite. The obtained GrO was characterized by Raman and infrared spectroscopy, X-ray diffraction, and elemental analysis. The GrO contains carbonyl, carboxyl, and hydroxyl groups as well as C–O–C fragments. The dependence of the O/C molar ratio of GrO on the degree of graphitization of the parent graphite is nonmonotonic with a maximum at g ≈ 90%.
Key wordsgraphite graphitization degree graphene oxide
The work was carried out within the scope of a comprehensive program of scientific investigations “New functional substances and materials of chemical production” of the National Academy of Sciences of Ukraine (contract No. 5-18) and a target comprehensive program of investigations of the National Academy of Sciences of Ukraine “Fundamental problems in the creation of new nanomaterials and nanotechnologies” (contract No. 29/18-N).