Comparative Study of Conventional and Ultrasonic‐Assisted Synthesis of Co(II)‐ and Cu(II)‐Based MOFs for CO₂ Adsorption

ABSTRACT In this study, cobalt(II) and copper(II) metal–organic frameworks (MOFs) were synthesized using conventional reverse micelle (RM) and ultrasonic‐assisted reverse micelle (UARM). The UARM method demonstrated superior efficacy in producing MOFs with improved properties. The CO 2 adsorption properties of the synthesized MOFs were investigated using a volumetric adsorption apparatus. The adsorption isotherms were analyzed using various isotherm models, including Langmuir, Freundlich, Dubinin–Radushkevich, and Temkin. Thermodynamic parameters were calculated to understand the nature of the adsorption process. Based on RSM optimization, the capability of Co‐MOF was estimated to be about 8.48 mmol/g. The enhanced adsorption performance was attributed to the efficient surface area, surface properties, and strong interaction between the CO 2 molecules and the MOF surface.