Structural engineering of metal-organic frameworks for perfluorinated gas separation

Perfluorinated gases have emerged as critical environmental concerns due to their high global warming potential (GWP). Metal-organic frameworks (MOFs), with their high specific surface area, adjustable pore structure and designability of functional sites, have demonstrated significant potential in addressing this environmental challenge. This review systematically examines recent progress in MOF-based separation technologies for various perfluorinated gas systems. Particular emphasis was placed on the applicability of pore structure optimization, ligand functionalization, electrostatic recognition, molecular sieve separation and flexible framework design. Through comparative analysis of these methodologies, we establish structure-property correlations that govern the adsorption and separation performance of MOFs. Furthermore, this work presents a critical analysis of current technical limitations in practical perfluorinated gas separation applications, including challenges in material stability, separation selectivity, and scalability. Finally, we outline future research direction focusing on advanced characterization techniques, computational modeling integration, and sustainable synthesis methods. This review aims to provide systematic guidance for developing next-generation MOF materials while establishing theoretical foundations for their industrial application in greenhouse gas mitigation.