缺陷工程调控的MOFs材料在生物质催化转化中的应用研究进展OA

Driven by the global sustainable energy transition and green chemistry strategies,the targeted catalytic conversion of biomass into high-value chemicals has become a focal point of frontier research.Metal-organic frameworks(MOFs)catalysts constructed through defect engineering strategies,with their precisely tunable topologies and orderly distributed active sites,open new pathways for efficient biomass conversion.This article describes four types of MOFs defects(metal node vacancies,metal node doping,ligand vacancies,ligand substitution).It explains the controlled construction methods of defect MOFs,namely direct synthesis(DNS)and post-synthetic modification(PST),and compares the fundamental differences between the two approaches.Furthermore,it details the applications of defect MOFs in biomass catalytic conversion,delving into the mechanisms of directional regulation of active sites by defect engineering and the structure-activity relationships,with a particular focus on the synergistic catalytic mechanisms of MOFs catalysts in the targeted conversion of key biomass components such as lignin,cellulose,and hemicellulose.Precise control of the defect structures can endow MOFs materials with unique physicochemical properties,thereby significantly enhancing their efficiency in biomass catalytic conversion.Finally,future research should concentrate on the precise construction and dynamic evolution mechanisms of MOFs defect structures and strive to find the optimal balance between stability and activity.