▎ 摘　　要

NOVELTY - Preparing graphene nanoribbon comprises (i) heating molecular sieve crystal having one-dimensional channel, where the organic amine small molecule is present in the one-dimensional channel to synthesize a single-wall carbon tube in the channel, (ii) removing the molecular sieve crystals after rupturing single-walled carbon tubes to form the graphene nanoribbons. USE - The method is useful for preparing graphene nanoribbon. ADVANTAGE - The method is simple.