▎ 摘　　要

NOVELTY - Preparation of graphene nanobelt involves adding carbon nano-wall to concentrated sulfuric acid, adding potassium permanganate, stirring, adding deionized water, washing with hydrochloric acid, filtering, producing slurry, drying, adding carbon dioxide such that ratio of carbon dioxide and slurry is 1 g:5-1000 ml. The slurry is heated at 150-300 degrees C in presence of ionic liquid solvent. The solution is filtered and dried to obtain graphene nanobelt. USE - Preparation of graphene nanobelt (claimed). ADVANTAGE - The graphene nanobelt is produced by simple method.