حذف داروهاي سفيكسيم، سيپروفلاكسسين و افلوكساسين از آب هاي آلوده توسط الياف پليمري حاوي اسكلت هاي فلز-آلي (MOFs)

Removal of Cefixime, Ciprofloxacin an‎d Ofloxacin from Contaminated Water by Polymer Fibers Containing Metal-Organic Frameworks (MOFs)

شيمي معدني

pharmaceutical residues are particularly noteworthy. Cephalosporins an‎d Fluoroquinolones are among the most frequently used antibiotics. In the initial phase of this study, ZIF-67 an‎d HKUST-1 crystals were synthesized in situ on PVA fibers, an‎d these adsorbents were employed to adsorb the drug Cefixime. Various factors, including temperature, time, Ph, adsorbent dosage, an‎d solvent concentration, were optimized, resulting in approximately 88% adsorption for both ZIF-67/PVA an‎d HKUST-1/PVA after 50 minutes under ideal condition. In the subsequent phase, Zirconium-based MOFs (Zr-MOFs), such as MOF-808, MOF-801 an‎d, UiO-66 were applied to PVA fibers, which were then used to adsorb the drugs Ciprofloxacin an‎d Ofloxacin from aqueous solution, achieving adsorption rates of 98%, 94%, an‎d 97% for MOF-808/PVA, MOF-801/PVA, an‎d UiO-66/PVA respectively in the case of Ciprofloxacin. These adsorbents were also utilized for the adsorption of Ofloxacin, resulting in optimized adsorption rates of 93%, 96%, an‎d 97% for the MOF-808/PVA, MOF-801/PVA, an‎d UiO-66/PVA adsorbents, respectively. Kinetic an‎d thermodynamic analyses were performed on all synthesized composites. The kinetic studies assessed First-order an‎d Second-order reaction kinetics, intraparticle diffusion, an‎d the Elovich model. In the thermodynamic investigations, the Langmuir, Freundlich, an‎d Temkin were eva‎luated. All samples used in this study, including the MOF powders an‎d the synthesized composites, were characterized an‎d identified through various techniques such as XRD, FT-IR, UV-vis, BET, TGA, ICP, FE-SEM, EDX, Zeta Potential, an‎d Tensile Strength.

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