School of Materials Science and Engineering, Yancheng Institute of Technology, Yancheng 224051, PR China; Key Laboratory for Ecological-Environment Materials of Jiangsu Province, Yancheng Institute of Technology, Yancheng 224051, PR China.
School of Materials Science and Engineering, Yancheng Institute of Technology, Yancheng 224051, PR China.
Int J Biol Macromol. 2024 Nov;279(Pt 1):135113. doi: 10.1016/j.ijbiomac.2024.135113. Epub 2024 Aug 27.
Tetracycline hydrochloride (TCH) removal from wastewater has drawn much attention recently, although it still remains challenging. Herein, Fe-based metal-organic frameworks (MOFs) incorporated nanofibrous membranes were prepared by green electrospinning and applied as adsorbents to remove TCH. The presence of MOFs noticeably improved specific surface area of the nanofibrous membranes, and adsorption capability increased with the amount of MOFs within membranes. As the temperature increased, the amount of TCH that was adsorbed continuously reduced, and the maximum adsorption capacity (248.5 mg/g) was attained at 273 K. The adsorption behavior of the nanofibrous membranes followed Langmuir isotherm model and pseudo-second-order kinetic model. Thermodynamic parameters suggested that the adsorption process was spontaneous and exothermic. A series of interactions between the membrane and TCH, such as pore filling, coordination bonding, π-π interaction, hydrogen bonding interaction and electrostatic interaction, combined to enhance the adsorption performance. Good stability and adsorption capability were demonstrated by the nanofibrous membranes, suggesting that they could be used for effective and affordable water purification.
盐酸四环素（TCH）的废水去除最近引起了广泛关注，尽管它仍然具有挑战性。本文通过绿色静电纺丝制备了负载金属有机框架（MOFs）的纳米纤维膜，并将其用作吸附剂以去除 TCH。MOFs 的存在显著提高了纳米纤维膜的比表面积，并且吸附能力随膜内 MOFs 的量增加而增加。随着温度的升高，吸附的 TCH 量不断减少，在 273 K 时达到最大吸附容量（248.5 mg/g）。纳米纤维膜的吸附行为符合朗缪尔等温吸附模型和拟二级动力学模型。热力学参数表明，吸附过程是自发的和放热的。膜与 TCH 之间的一系列相互作用，如孔填充、配位键合、π-π 相互作用、氢键相互作用和静电相互作用，共同增强了吸附性能。纳米纤维膜表现出良好的稳定性和吸附能力，表明它们可用于有效且经济实惠的水净化。
