Faculty of Sciences, Chemistry Department, Alexandria University, Moharem Bey, Alexandria, Egypt.
Faculty of Sciences, Chemistry Department, Alexandria University, Moharem Bey, Alexandria, Egypt.
Carbohydr Polym. 2020 Oct 1;245:116438. doi: 10.1016/j.carbpol.2020.116438. Epub 2020 May 26.
Growing interests and efforts have been recently focused on design and assembly of novel hydrogel nanosorbents for removal of drugs from wastewater. Therefore, this work is aimed to immobilize and encapsulate starch hydrogel matrix onto metal organic frameworks (MOFs) and dope with nanomagnetite. The magnetic MOFs-Starch hydrogel (NFeO@Zn(GA)/Starch-Hydrogel) was synthesized via microwave irradiation process and characterized with high surface area (528.39 m/g), mesoporous with pore size 2.90 nm and highly crystalline structure. The maximum swelling ratio (1000.0 %) was optimized at pH 10, 180 min and 25 °C. The validity of NFeO@Zn(GA)/Starch-Hydrogel for adsorptive removal of Fluvastatin statin drug provided maximum equilibrium adsorption capacity 782.05 mg g. The Langmuir isotherm and pseudo-second kinetics models were correlated well with the computed correlation coefficient values 0.9991 and 0.9997, respectively. The validity of NFeO@Zn(GA)/Starch-Hydrogel for removal of FLV statin drug from real water matrices was confirmed in the range 96.15-99.99 %.
最近，人们对设计和组装新型水凝胶纳米吸附剂以去除废水中的药物产生了浓厚的兴趣并投入了大量的努力。因此，本工作旨在将淀粉水凝胶基质固定和包埋到金属有机骨架（MOFs）中，并掺杂纳米磁铁矿。通过微波辐射法合成了磁性 MOFs-淀粉水凝胶（NFeO@Zn(GA)/Starch-Hydrogel），其比表面积为 528.39 m/g，具有介孔结构，孔径为 2.90nm，结晶度高。在 pH 值为 10、180min 和 25°C 时，最大溶胀比（1000.0%）达到最优。NFeO@Zn(GA)/Starch-Hydrogel 对 Fluvastatin 他汀类药物的吸附去除具有有效性，提供了最大平衡吸附容量 782.05mg/g。Langmuir 等温线和拟二级动力学模型与计算的相关系数值 0.9991 和 0.9997 相关度较好。NFeO@Zn(GA)/Starch-Hydrogel 对实际水基质中 FLV 他汀类药物的去除有效性在 96.15-99.99%的范围内得到了证实。
