Metal-organic porous materials for gas adsorption: design principle for complex systems

Gas adsorption materials are evolving towards intelligence and multifunctionality to address the complex requirements posed by mixed gases, humid gases, and toxic gases on their performance. Metal–organic cages (MOCs) and metal–organic frameworks (MOFs), with their high degree of designability, can meet various gas adsorption requirements in complex environments through the selection or functionalization of metal nodes and ligands; however, these functionalities have not yet been further integrated. This paper catalogs various practical gas adsorption scenarios and summarizes and discusses the design strategies by which metal–organic porous materials can achieve selective adsorption, reversible adsorption, catalytic properties, responsive adsorption, and water stability. By discussing these design factors, the goal is to inspire readers to consider their integration, thereby providing a reference for the further application of metal–organic porous materials in the field of gas adsorption.