MIL-101(Cr)基膜材料的制备及双氯芬酸钠去除性能
胡晓静 , 谢晶晶 , 张雨昕 , 张郁涵 , 黄晓辉
高等学校化学学报 ›› 2025, Vol. 46 ›› Issue (10) : 105 -115.
MIL-101(Cr)基膜材料的制备及双氯芬酸钠去除性能
Preparation of MIL-101(Cr)-based Membranes for Removing Diclofenac Sodium
以一种结构稳定的MOFs材料MIL-101(Cr)为吸附剂, 以高分子化合物聚丙烯腈(PAN)为载体, 制备了一种通过减压抽滤即可高效去除水溶液中双氯芬酸钠的MOFs混合基质膜材料MIL-101@PAN. 研究表明, 所制备的膜材料具有疏松多孔的结构, 膜厚度约为14 μm, 而且随着MOFs含量的增加, 膜材料的性能得到明显提高. 其中, 当MIL-101(Cr)与PAN的质量比增加至2∶5时, 所制备的膜材料MIL-101@PAN-2对双氯芬酸钠的去除效果最佳, 特别是对20 mg/L双氯芬酸钠水溶液中双氯芬酸钠的去除效率可达95.59%, 而且经5次循环使用后, 去除效率仍保持在75%以上. 此外, 在含有与双氯芬酸钠等浓度(20 mg/L)的Na+, K+和NH4+的混合溶液中, 该膜材料依然可以保持90%以上的去除效率.
A kind of MOF-based mixed-matrix membrane, MIL-101@PAN, capable of removing diclofenac sodium from aqueous solution by decompression filtration, was prepared based on a stable MOF, MIL-101(Cr), and polyacrylonitrile(PAN). According to our investigations, the obtained MOF-based membranes displayed loose and porous structure with a membrane thickness of about 14 μm, and the performance of the membranes could be significantly improved with the increase of MOF content. Specifically, when the mass ratio of MIL-101(Cr) to PAN reached to 2∶5, the prepared membrane MIL-101@PAN-2 exhibited the best removal performance for diclofenac sodium, particularly achieving a removal efficiency of 95.59% for a diclofenac sodium solution with a concentration of 20 mg/L, and maintaining a removal efficiency above 75% even after 5 cycles. Furthermore, even in a mixed solution containing Na+, K+, and NH4+ at concentrations comparable to those of diclofenac sodium(20 mg/L), the membrane could still maintain a removal efficiency of over 90%.
MIL-101(Cr) / 混合基质膜 / 双氯芬酸钠
MIL-101(Cr) / Mixed-matrix membrane / Diclofenac sodium
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宁德师范学院2021年度重大项目培育计划青年项目(2021ZDK08)
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