▎ 摘　　要

NOVELTY - Preparing nano-fiber membrane comprises (i) adding nylon and nano-zeolite powder to N,N-dimethylformamide, and formulating into a shell spinning solution, (ii) adding graphene oxide to water for ultrasonic dispersion, adding ascorbic acid as a reducing agent, magnetically stirring at room temperature to obtain core material spinning solution, and (iii) forming the shell spinning solution and the core spinning solution by coaxial electrospinning to obtain nano-fiber membrane having a nylon outer portion and graphene inside. USE - The membrane is useful for air sterilization and purification (claimed). DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for nano-fiber membrane prepared by the above method.