▎ 摘　　要

NOVELTY - The preparation of graphene quantum dots/polyvinyl alcohol hollow nanofiber involves (i) dispersing graphene quantum dots in polyvinyl alcohol solution (A) to obtain graphene quantum dots/polyvinyl alcohol shell spinning solution (B), (ii) placing graphene quantum dots/polyvinyl alcohol shell spinning solution (B) and core solution on a coaxial outer layer and a core spinning needle, adjusting the needle from a receiver to a certain distance, connecting a high-voltage electrostatic generator, receiving graphene quantum dots/polyvinyl alcohol nanofiber on a receiver. USE - Preparation of graphene quantum dots/polyvinyl alcohol hollow nanofiber used in photovoltaic device, drug carrier, flexible electronic device, and anti-counterfeit label. ADVANTAGE - The environmentally-friendly method enables the preparation of graphene quantum dots/polyvinyl alcohol hollow nanofiber easily by simple process at low cost. DETAILED DESCRIPTION - The preparation method of graphene quantum dots/polyvinyl alcohol hollow nanofiber involves (i) uniformly dispersing graphene quantum dots in polyvinyl alcohol solution (A) to obtain graphene quantum dots/polyvinyl alcohol shell spinning solution (B), (ii) placing graphene quantum dots/polyvinyl alcohol shell spinning solution (B) and core solution on a coaxial outer layer and a core spinning needle, adjusting the needle from a receiver to a certain distance, connecting a high-voltage electrostatic generator for coaxial electrospinning, receiving graphene quantum dots/polyvinyl alcohol nanofiber with a core-shell structure on a receiver, (iii) washing the graphene quantum dots/polyvinyl alcohol nanofiber with a solvent, until the core solution is completely removed, and (iv) drying.