Synergistic sorption strategies: Ionic liquids-modified MOF matrices for adsorption processes

The fusion of metal–organic frameworks (MOFs) and ionic liquids (ILs) has potential for improving adsorption separation processes. By integrating ILs into MOF structures, a new frontier emerges, whereby the favorable properties of both materials function synergistically to yield remarkable advancements in fluid mixture separation through adsorption. The strategic infusion of diverse ILs into various MOF matrices results in uniquely engineered IL-MOF composites with tailored functional attributes. These nuances have a profound influence on the adsorptive separation performance, thereby unveiling innovative possibilities in separation science. Amidst the growing interest in reticular chemistry in recent years, this comprehensive review aspires to encapsulate the latest strides in IL-MOF-related research. By distilling intricate research endeavors, this exposition seeks to illuminate the forefront of advancements in the field of IL-incorporated MOF architectures. Delving into this dynamic interplay, this review examines the synergistic effects that arise from the merger of ILs and MOFs, leading to the emergence of multifunctional adsorbents with unprecedented capabilities. Through strategic modifications, these IL-MOF composites exhibit enhanced selectivity, superior adsorption capacities, and remarkable stability for a wide range of applications. The underlying mechanisms governing the adsorption processes within these hybrid materials were investigated, elucidating the role of ILs in facilitating molecular recognition and transport within the MOF scaffolds. Furthermore, the potential of IL-MOFs to revolutionize energy-efficient separation through their adaptability to various adsorption-driven technologies is discussed. In addition to unraveling the synergistic interplay between ILs and MOFs, we also address the challenges and opportunities in scaling up the synthesis and application of IL-MOF adsorbents.