Adsorption of Rhodamine B by Yttrium-Succinate metal organic framework (MOF)

Abstract

Rhodamine B is a basic (cationic) dye that is used in paint, textile, and paper industries which is very dangerous for the environment and human health when exists above 14 ng/L, its detection limit (LOD). Physical processing using the adsorption method was chosen in this study because of its effectiveness in absorbing various pollutants. A porous adsorbent that has high surface area employed was used, Yttrium-Succinate Metal Organic Framework (MOF). In this study, MOF was synthesized using succinic acid ligand with yttrium metal in N, N-Dimethylformamide (DMF) solvent using solvothermal method to be applied as an adsorbent of Rhodamine B dyes. The as-synthesized MOF was characterized using FTIR, TGA, XRD, SAA, and SEM. The adsorption capacity was determined by UV-Vis Spectrophotometer resulting the highest adsorption capacity at pH 9 and contact time 420 minutes of 0.39607 following the Langmuir Adsorption Isotherm. The results indicate that Yttrium-Succinate MOF is promising to be an adsorbent of Rhodamine B dyes.