▎ 摘　　要

NOVELTY - Preparing graphene quantum dot nano cluster involves preparing quantum dot precursor by using concentrated nitric acid to oxidize the anthracene to obtain the quantum dot precursor. The surfactant is added into sodium hydroxide (NaOH) solution and ultrasonically dispersed uniformly to obtain the pre-treated alkali solution. The quantum dot precursor is added into the pre-processing alkali solution for repeatedly ultrasonic processing to obtain the uniformly dispersed mixed solution. The solution is mixed to react, cooled to room temperature, and transferred to the reaction kettle to react to obtain the reactant. The reactant is cooled down to room temperature. The insoluble carbon product is removed by ultrasonic filtering. The filtrate is reserved, dialyzed by placing the filtrate in the dialysis bag for dialysis to remove the rest inorganic salt and small molecule to obtain dialysis liquid. USE - Method for preparing graphene quantum dot nano cluster. ADVANTAGE - The preparation method is simple, fast, strong operability, cost effective, and suitable for mass production. DETAILED DESCRIPTION - Preparing graphene quantum dot nano cluster involves preparing quantum dot precursor by using concentrated nitric acid to oxidize the anthracene to obtain the quantum dot precursor. The surfactant is added into sodium hydroxide (NaOH) solution and ultrasonically dispersed uniformly to obtain the pre-treated alkali solution. The quantum dot precursor is added into the pre-processing alkali solution for repeatedly ultrasonic processing to obtain the uniformly dispersed mixed solution. The solution is mixed to react, cooled to room temperature, and transferred to the reaction kettle to react to obtain the reactant. The reactant is cooled down to room temperature. The insoluble carbon product is removed by ultrasonic filtering. The filtrate is reserved, dialyzed by placing the filtrate in the dialysis bag for dialysis to remove the rest inorganic salt and small molecule to obtain dialysis liquid. The dialysis liquid is subjected to gradient centrifugation and the precipitate is collected as the nano-cluster product. DESCRIPTION OF DRAWING(S) - The drawing shows a graphene quantum dot nano-cluster preparation method. (Drawing includes non-English language text).