▎ 摘　　要

NOVELTY - The preparation method of graphene nanorods involves dissolving graphene oxide and reducing agent in deionized water, and adjusting the pH value to obtain a mixed solution, placing the mixed solution in a tubular container, placing the tubular container in an ultrasound system, ultrasonically processing the mixed solution in the tubular container, irradiating the mixed solution, and reducing in the tungsten lamp to obtain an aqueous solution of graphene nanorods, and separating the aqueous solution of the graphene nanorods, washing the separated solid matter, and drying. USE - Preparation of graphene nanorods used in sensor, drug transportation, and water treatment. ADVANTAGE - The method enables preparation of graphene nanorods with high specific surface area, wrinkle resistance, by simple, easy and economical process. DETAILED DESCRIPTION - The preparation method of graphene nanorods involves (1) dissolving graphene oxide and reducing agent in deionized water, and adjusting the pH value to 7-11 to obtain a mixed solution, where the concentration of the graphene oxide in the mixed solution is 0.001-2 mg/ml, the mass ratio of the graphene oxide and reducing agent is 1:(0.1-10), and the reducing agent is 1-butyl-2,3-dimethylimidazolium iodide or ascorbic acid, (2) placing the mixed solution in a tubular container, placing the tubular container in an ultrasound system, ultrasonically processing the mixed solution in the tubular container 1-5 times, where the ultrasonically processing is performed with ultrasonic power of 150 W for 15-60 minutes and with ultrasonic power of 7000 W for 15-60 minutes, (3) irradiating the mixed solution, and reducing in the iodine-tungsten lamp for 0.5-2 hours to obtain an aqueous solution of graphene nanorods, and (4) separating the aqueous solution of the graphene nanorods, washing the separated solid matter, and drying.