▎ 摘 要
NOVELTY - A graphene nanobelt is prepared by adding carbon nanotube in mixed acid, reflux reacting for 1 hour, filtering, and washing and drying; ultrasonic processing at 2-10 KW; and filtering, using solvent to wash the filter residue, and drying the filter residue. The mixed acid comprises concentrated nitric acid and concentrated sulfuric acid. USE - Method for preparation of graphene nano belt (claimed).