▎ 摘　　要

NOVELTY - Graphene and derivatives are synthesized by synthesizing a ceramic substrate from a ceramic material in a particulate form, where the ceramic material is selected from a group consisting of oxides of silicon, aluminum, zirconium, zinc, magnesium, and calcium; depositing carbon material on synthesized ceramic substrate to synthesize coated graphene ceramic substrate coated with a carbonaceous material; dispersing/dissolving the graphene ceramic substrate coated with carbonaceous material in greater than or equal to 1 solvent to obtain a dispersion solution; subjecting the dispersion solution comprising the graphene ceramic substrate coated with the carbonaceous material dissolved/dispersed in greater than or equal to 1 solvent to a mechanical shearing process to exfoliate graphene layers from graphene ceramic substrate coated with carbonaceous material; and processing the graphene derivatives by subjecting the exfoliated graphene layers to ultra-sonication technique to synthesize graphene nano-platelets. USE - Synthesis of graphene and derivatives. ADVANTAGE - The method and system are simple and cost-effective for synthesizing graphene nano platelets by an exfoliation method, and provides high purity graphene derivative with reduced chemical impurities and defects as compared to other chemical synthesis routes. DETAILED DESCRIPTION - Graphene and derivatives are synthesized by synthesizing a ceramic substrate from a ceramic material in a particulate form, where the ceramic material is selected from a group consisting of oxides of silicon, aluminum, zirconium, zinc, magnesium, and calcium; depositing carbon material on synthesized ceramic substrate to synthesize coated graphene ceramic substrate coated with a carbonaceous material, where the carbonaceous material is selected from glucose, lactose, fructose, coal tar, asphalt, and recycled plastics; dispersing/dissolving the graphene ceramic substrate coated with carbonaceous material in greater than or equal to 1 solvent to obtain a dispersion solution, and where greater than or equal to 1 solvent is selected from acetone, ethanol, water, isopropyl alcohol (IPA), N-methyl-2-pyrrolidone (NMP), dimethylformamide (DMF), and dimethyl sulfoxide (DMSO); subjecting the dispersion solution comprising the graphene ceramic substrate coated with the carbonaceous material dissolved/dispersed in greater than or equal to 1 solvent to a mechanical shearing process to exfoliate graphene layers from graphene ceramic substrate coated with carbonaceous material and where the step of exfoliating graphene layers comprises exfoliating graphene derivatives; and processing the graphene derivatives by subjecting the exfoliated graphene layers to ultra-sonication technique to synthesize graphene nano-platelets. An INDEPENDENT CLAIM is included for a system for synthesizing graphene and derivatives through a mechanical shearing process, comprising a beaker to store a synthesized graphene ceramic composite with greater than or equal to 1 solvent, and where the synthesized graphene ceramic substrate composite is obtained by synthesizing a ceramic substrate from a ceramic material in particulate form, depositing the carbon material on the synthesized ceramic substrate to synthesize carbonaceous material coated graphene ceramic substrate and where the ceramic material is selected from a group consisting of oxides of silicon, aluminum, zirconium, zinc, magnesium, and calcium, and where the carbonaceous material is selected from glucose, lactose, fructose, coal tar, asphalt, and recycled plastics, and where greater than or equal to 1 solvent is selected from acetone, ethanol, water, isopropyl alcohol (IPA), N-methyl-2-pyrrolidone (NMP), dimethylformamide (DMF), and dimethyl sulfoxide (DMSO); and metallic blades coupled to a rotor through a cylindrical rod, where the metallic blades are rotated to cause an exfoliation of graphene layers from the graphene ceramic substrate by subjecting the graphene ceramic substrate coated with carbonaceous and dissolved in greater than or equal to 1 solvent to a mechanical shearing process to exfoliate graphene layers from the graphene ceramic substrate coated with the carbonaceous material dissolved/dispersed in greater than or equal to 1 solvent.