Development of high-flux reverse osmosis membranes with MIL-101(Cr)/Fe3O4 interlayer

IF 2.3 4区材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY Frontiers of Materials Science Pub Date : 2024-09-13 DOI:10.1007/s11706-024-0692-x

Yanzhuang Jiang, Qian Yang, Lin Zhang, Liyan Yu, Na Song, Lina Sui, Qingli Wei, Lifeng Dong

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Abstract

MIL-101(Cr) has a special pore cage structure that provides broad channels for the transport of water molecules in the reverse osmosis (RO) water separation and purification. Combining MIL-101(Cr) with Fe₃O₄ nanoparticles forms a water transport intermediate layer between the polyamide separation membrane and the polysulfone support base under an external magnetic field. MIL-101(Cr) is stable in both water and air while resistant to high temperature. With the introduction of 0.003 wt.% MIL-101(Cr)/Fe₃O₄, the water flux increased by 93.31% to 6.65 L·m⁻²·h⁻¹·bar⁻¹ without sacrificing the NaCl rejection of 95.88%. The MIL-101(Cr)/Fe₃O₄ multilayer membrane also demonstrated certain anti-pollution properties and excellent stability in a 72-h test. Therefore, the construction of a MIL-101(Cr)/Fe₃O₄ interlayer can effectively improve the permeability of RO composite membranes.

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利用 MIL-101(Cr)/Fe3O4 中间膜开发高通量反渗透膜

MIL-101(Cr) 具有特殊的孔笼结构，可在反渗透 (RO) 水分离和净化过程中为水分子的传输提供宽广的通道。在外加磁场的作用下，MIL-101(Cr) 与 Fe3O4 纳米粒子结合可在聚酰胺分离膜和聚砜支撑基底之间形成水传输中间层。MIL-101(Cr) 在水和空气中都很稳定，同时还能耐高温。引入 0.003 wt.% 的 MIL-101(Cr)/Fe3O4后，水通量增加了 93.31%，达到 6.65 L-m-2-h-1-bar-1，而 NaCl 的去除率却没有降低，达到 95.88%。在 72 小时的测试中，MIL-101(Cr)/Fe3O4 多层膜还表现出一定的抗污染性能和出色的稳定性。因此，构建 MIL-101(Cr)/Fe3O4 中间膜可有效提高反渗透复合膜的渗透性。

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来源期刊

Frontiers of Materials Science MATERIALS SCIENCE, MULTIDISCIPLINARY-

CiteScore

4.20

自引率

3.70%

发文量

515

期刊介绍： Frontiers of Materials Science is a peer-reviewed international journal that publishes high quality reviews/mini-reviews, full-length research papers, and short Communications recording the latest pioneering studies on all aspects of materials science. It aims at providing a forum to promote communication and exchange between scientists in the worldwide materials science community. The subjects are seen from international and interdisciplinary perspectives covering areas including (but not limited to): Biomaterials including biomimetics and biomineralization; Nano materials; Polymers and composites; New metallic materials; Advanced ceramics; Materials modeling and computation; Frontier materials synthesis and characterization; Novel methods for materials manufacturing; Materials performance; Materials applications in energy, information and biotechnology.