▎ 摘　　要

NOVELTY - A functionalized graphene loaded palladium nano-particle composite material preparing method involves dispersing graphite in water to obtain graphene suspension, adding pyrenetetrasulfonic acid with sodium hydroxide solution to the mixture, heating and stirring for 8-15 hours, filtering to obtain functional graphene. The functional graphene is dispersed in water to obtain the functional graphene suspension, followed by adding palladium chloride solution and sodium borohydride solution, heating and stirring for 8-15 hours, centrifugally filtering to obtain finished product. USE - Method for preparing functionalized graphene loaded palladium nano-particle composite material that is utilized for detecting electrode modified nitroaromatic compounds (claimed). ADVANTAGE - The method enables detecting nitro aromatic compounds with good catalytic performance, low detection lines, and high sensitivity detection of nitrobenzene.