Flavone derivative-zinc complex and preparation method and application thereof

The invention relates to the field of material synthesis, and discloses a flavone derivative-zinc complex and a preparation method thereof. The preparation method comprises the following steps: S1, taking N, N-dimethylformamide and methyl alcohol and mixing, and obtaining a reaction solvent; S2, taking 3-hydroxy-6, 4 '-flavone dicarboxylic acid, a zinc salt crystal and the reaction solvent, mixing, and sealing to obtain a to-be-reacted substance; S3, sequentially carrying out heating, heat preservation and cooling treatment on the to-be-reacted substance to obtain yellow blocky crystals; and S4, washing and drying the yellow blocky crystals to obtain the complex. The invention also discloses an application of the complex in capturing and converting CO2 under normal pressure. The complex has a unique open Zn site and a smooth pore channel structure and can adsorb a large amount of CO2 at normal temperature and serves as a Lewis acid catalyst to become a nano reactor for reacting CO2 with an epoxy compound at n