▎ 摘　　要

NOVELTY - Polymer modified graphene material comprises molybdenum disulfide, graphene, graphene quantum dot and polymer. USE - The material and the sensor are useful in preparing a gas sensor, preferably the gas is nitrogen dioxide (claimed). ADVANTAGE - The sensor: does not need to be heated to detect nitrogen dioxide; can detect nitrogen dioxide at room temperature; has high response value of the gas sensor prepared by the polymer modified graphene material, which is increased by more than 30% and has excellent repeatability and selectivity. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for a gas sensor comprising a substrate and a gas sensitive material, where the gas sensitive material is the polymer modified graphene material.