Fang Mingyuan, Drobek Martin, Cot Didier, Montoro Carmen, Semsarilar Mona
Institut Européen des Membranes, IEM UMR 5635, University of Montpellier, CNRS, ENSCM, 34095 Montpellier, France.
Inorganic Chemistry Department, Universidad Autónoma de Madrid, 28049 Madrid, Spain.
Membranes (Basel). 2023 Jan 4;13(1):65. doi: 10.3390/membranes13010065.
Metal Organic Frameworks (MOFs) present high surface areas, various pore topology as well as good stabilities. The functionalities and porosity can be tuned by using different linkers with various functional groups and a wide range of linker lengths. These properties make them good candidates in membrane separation applications. In this work, we propose a simple UiO-66 MOF-based membrane fabrication method following two steps. First, the α-alumina tubular membrane support was dip-coated with MOF-polymer hybrid nanoparticles (NPs). These NPs were prepared via one-pot synthesis by adding poly (methacrylic acid)--poly (methyl methacrylate) (PMAA--PMMA) NPs to the classical acetic acid-modulated UiO-66 or UiO-66-NH synthesis formulation. Second, secondary membrane growth was applied to give rise to a continuous and homogeneous crystalline MOF membrane layer. The gas permeances (He, N, CO and SF) tests confirmed high membrane permeability with no macro-defects. The as-prepared membranes that were used for dye separation (Rhodamine B) showed relatively good separation capacity.
金属有机框架材料（MOFs）具有高比表面积、多样的孔拓扑结构以及良好的稳定性。通过使用带有不同官能团和不同连接体长度的各种连接体，可以调节其功能和孔隙率。这些特性使其成为膜分离应用中的理想候选材料。在这项工作中，我们提出了一种基于UiO - 66 MOF的简单两步膜制备方法。首先，用MOF - 聚合物杂化纳米颗粒（NPs）对α - 氧化铝管状膜载体进行浸涂。这些纳米颗粒是通过将聚（甲基丙烯酸）-聚（甲基丙烯酸甲酯）（PMAA - PMMA）纳米颗粒添加到经典的乙酸调制的UiO - 66或UiO - 66 - NH合成配方中，通过一锅法合成制备的。其次，进行二次膜生长以形成连续且均匀的结晶MOF膜层。气体渗透率（He、N、CO和SF）测试证实了该膜具有高渗透性且无宏观缺陷。所制备的用于染料分离（罗丹明B）的膜表现出相对良好的分离能力。
