Document Type : Original Article
National Research Center, Dokki, Cairo, Egypt
Textile Research and Technology Institute, National Research Centre
Cerium organic frameworks are presented in this work as pollutant preventing materials for the removal of reactive red 195 dye (RR 195) from aqueous solutions. Anthranilic acid and β-diketone as ligand sources were used in the separate state for the preparation of the cerium complexes metal organic frameworks (MOF1- MOF2) with a stoichiometric ratio 1:2 The prepared MOFs were used as adsorbent materials for decontamination of coloured solutions.
The prepared materials were fully characterized by SEM, EDX, FTIR, surface area and zeta potential. The adsorption conditions (adsorption time, adsorbent loading, pH and dye concentration) were thoroughly optimized. The maximum adsorption capacity of the tertiary complex was more than that of the binary complexes. Different isothermal models (Langmuir, Freundlich, Temkin, and Dubinin–Kaganer–Radushkevich) have been studied. The physic-sorption adsorption of RR 195 behaviour is more fit to the Langmuir isotherm model through the pseudo-second-order kinetic model. That study introduces the promising cerium organic framework as pollution preventing material through dye removal.