▎ 摘　　要

NOVELTY - The preparation method of porous nano-composite material involves weighing 0.05-5 %mass graphene nanosheet and polyethersulfone resin, and uniformly mixing. USE - The method is useful for preparation of porous nano-composite material, which is useful in gas sensor (claimed). ADVANTAGE - The method enables easy preparation of porous nano-composite material with excellent flexibility, strength and circulation properties. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for use of porous nano-composite material in gas sensor.