用于从废水中高效去除环丙沙星的静电纺丝ZIF-67/PVDF复合膜。
Electrospun ZIF-67/PVDF composite membranes for efficient ciprofloxacin removal from wastewater.
作者信息
Li Ping, Yue Xiaolin, Li Anhong, Cui Can, Wang Lan, Tan Wenyuan
机构信息
College of Chemical Engineering, Sichuan University of Science and Engneering Zigong Sichuan 643000 China
College of Chemical and Environmental Engineering, Sichuan University of Science and Engineering Zigong Sichuan 643000 China.
出版信息
RSC Adv. 2025 Apr 14;15(15):11503-11510. doi: 10.1039/d5ra00237k. eCollection 2025 Apr 9.
Cobalt 2-methylimidazole (ZIF-67) has been broadly explored for its applications in the treatment of antibiotics in wastewater. However, ZIF-67 in powder form is difficult to recover. In the study, ZIF-67 and Polyvinylidene Fluoride (PVDF) were blended electrospinning to prepare ZIF-67/PVDF membrane for adsorption of ciprofloxacin (CIP). The ZIF-67/PVDF membrane demonstrated outstanding adsorption efficiency for CIP, with a maximum adsorption capability of 4087.5 μg cm. The adsorption performance of ZIF-67/PVDF remains stable across a wide pH range and is unaffected by ionic interference. The ZIF-67/PVDF adsorbent follows pseudo-second-order kinetics and the Langmuir model. Furthermore, thermodynamic research indicates the adsorption of CIP is a spontaneous and exothermic process. It is proposed that the adsorption mechanism of CIP onto ZIF-67/PVDF involves electrostatic interactions, hydrogen bonding, π-π interactions, coordination bonding, and hydrophobic interactions.
钴 2-甲基咪唑（ZIF-67）已被广泛研究用于处理废水中的抗生素。然而，粉末形式的 ZIF-67 难以回收。在本研究中，将 ZIF-67 与聚偏氟乙烯（PVDF）共混进行静电纺丝，制备用于吸附环丙沙星（CIP）的 ZIF-67/PVDF 膜。ZIF-67/PVDF 膜对 CIP 表现出优异的吸附效率，最大吸附容量为 4087.5 μg/cm。ZIF-67/PVDF 的吸附性能在很宽的 pH 范围内保持稳定，且不受离子干扰的影响。ZIF-67/PVDF 吸附剂符合准二级动力学和朗缪尔模型。此外，热力学研究表明 CIP 的吸附是一个自发的放热过程。有人提出，CIP 在 ZIF-67/PVDF 上的吸附机制涉及静电相互作用、氢键、π-π 相互作用、配位键和疏水相互作用。
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