▎ 摘　　要

NOVELTY - Preparing perylene metal compound comprises reacting perylene-3,4,9,10-tetracarboxylic dianhydride with a metal organic compound. USE - The perylene metal compound is useful for preparing composite material used as a photocatalyst for photocatalytic oxidation reaction of nitric oxide (all claimed). ADVANTAGE - The perylene metal compound and the composite material has porous structure which increases the number of catalytic active sites in the reaction, which is beneficial to the gas phase adsorption of nitric oxide, increases the conversion rate of nitric oxide oxidation, and avoids the toxic side effects of nitrogen dioxide product generated. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for: a perylene metal compound, prepared by the above method, where the perylene metal compound has a curd structure; a method for preparing composite material, comprising reacting perylene-3,4,9,10-tetracarboxylic dianhydride, metal organic compound and two-dimensional nano material; and a composite material, prepared by the above method, where the perylene metal compound in the composite material has a two-dimensional layered structure on a two-dimensional nano material.