▎ 摘　　要

NOVELTY - A graphene nanomaterial product is prepared by cavitating a liquid medium containing diaromatic component to synthesize graphene nanomaterial from diaromatic component and form a dispersion of graphene nanomaterial in the liquid medium; and obtaining a graphene nanomaterial product from the dispersion. USE - Preparation of graphene nanomaterial product (claimed). ADVANTAGE - Cavitation of diaromatic hydrocarbons provides way of generating the conditions necessary for rapid formation of graphene nanomaterial in the vapor phase of imploding bubbles. The stability of colloid dispersion can be adjusted by decreasing the level of dissolved air present in the reaction medium during cavitation. This bottom-up synthesis of graphene nanomaterial product has potential to be modified to allow for the production of graphene in forms required for different applications and also controlled for the yield of sheet dimensions down to the scales required for the fabrication of graphene quantum dots. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for graphene nanomaterial product. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic diagram of the consequences of diaromatic hydrocarbon cavitation produced by irradiation with ultrasound.