Abstract
This study aimed to create and characterize a fluorescence-based Tb-MOF compound for the effective detection and removal of tetracycline (TC) from water-based environments. Tb-MOF was synthesized by a solvothermal method using 1,4-benzenedicarboxylic acid, 1,10-phenanthroline as organic ligands and Terbium (Tb) as the metal center. Tb-MOF exhibited very intense fluorescence emission at 545 nm when excited at 306 nm at room temperature. Tb-MOF exhibited high sensitivity and selectivity in detecting tetracycline, with a Ksv value of 8.56×108 M−1 in the concentration range of 0–60 µM and an impressive detection limit of 0.0245 µM. Additionally, the adsorption performance of Tb-MOF for tetracycline was evaluated by examining its basic parameters, such as reaction time, pH, temperature, and adsorbent dosage. The adsorption data obtained in this study were consistent with the Langmuir model, indicating a maximum adsorption capacity of 266.9 mg/g at 298 K. Moreover, the adsorption kinetics followed a pseudo-second-order kinetic model, with a rate constant of 0.00267 g/ (mg·min). Based on the real sample studies, it was concluded that Tb-MOF is a promising material for the detection and removal of tetracycline in complex systems.
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