▎ 摘　　要

NOVELTY - Preparation of aerogel composite material involves calcining dicyandiamide as raw material to prepare flake carbonitride, reacting perylene tetracarboxylic dianhydride and carbonitride in imidazole, obtaining perylene tetracarboxylic dianhydride-modified carbon nitride, dispersing resultant product and graphene oxide in deionized water, reacting, and freeze-drying. USE - Preparation of aerogel composite material used for preparing agent for nitric oxide photocatalytic treatment in gas pollution treatment (all claimed). ADVANTAGE - The method enables simple and easy preparation of aerogel composite material having excellent photocatalytic effect on nitrogen monoxide gas. The composite material can be recycled easily.