Abstract
When combining special mechanochemical processing of graphite in high-speed and planetary ball mills and heat treatment, it was revealed that condensed graphene oxide is formed, and a nitrogen-containing carbon phase is synthesized. Melamine was used as the material for introducing nitrogen into the system; during the heat treatment it releases ammonia. Besides, it improves the process of compaction of graphite powders into workpieces in the production of refractive X-ray optics. The mechanochemical synthesis of graphite with melamine (not more than 1 wt.%) and two-stage annealing at 360 and 450 °C leads to the formation of some forms of they lead to the formation of graphene oxide and a nitrogen-containing carbon phase. X-ray studies revealed the appearance of peaks that can be attributed to peaks of graphene oxide and carbon nitride. The formed condensed carbon compounds with nitrogen and oxygen are characterized by natural aging.
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