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首页> 外文期刊>RSC Advances >Enhanced dispersibility of metal–organic frameworks (MOFs) in the organic phase via surface modification for TFN nanofiltration membrane preparation
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Enhanced dispersibility of metal–organic frameworks (MOFs) in the organic phase via surface modification for TFN nanofiltration membrane preparation

机译：通过表面改性，通过表面改性增强金属 - 有机骨架（MOF）的分散性TFN纳米滤膜膜制剂

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The nanosized UiO-66-NH _(2) metal–organic framework (MOF) material was synthesized and modified by palmitoyl chloride to enhance the dispersibility and restrain the aggregation of MOF particles in the organic phase. Then the above nanomaterial was introduced into interfacial polymerization to prepare thin film nanocomposite (TFN) nanofiltration membranes. The prepared membranes displayed “ridge-valley” shaped Turing structure surface morphology with membrane thickness around 380 nm. The FE-SEM, ATR-FTIR and XPS characterization showed the polyamide layer was fabricated on the substrate surface. The TFN membranes showed higher hydrophobicity, zeta potential and roughness than TFC membranes. Due to the introduction of MOF and the formation of MOF/polyamide interfacial passageways, the TFN membranes showed higher water permeability but slightly lower rejection properties than TFC membranes. Compared with the TFN membranes prepared from pristine UiO-66 and UiO-66-NH _(2) , the TFN membrane prepared from modified UiO-66-NH _(2) showed better rejection properties because of its superior dispersibility in the organic phase.
机译：纳米化UIO-66-NH _（2）金属有机骨架（MOF）材料由棕榈酰氯合成和改性，以增强分散性并抑制有机相中MOF颗粒的聚集。然后将上述纳米材料引入界面聚合中以制备薄膜纳米复合材料（TFN）纳米过滤膜。制备的膜显示出“脊谷”形状的结构表面形态，膜厚度约为380nm。 Fe-SEM，ATR-FTIR和XPS表征显示在基材表面上制造聚酰胺层。 TFN膜显示出比TFC膜更高的疏水性，Zeta电位和粗糙度。由于介绍了MOF和MOF /聚酰胺界面通道的形成，TFN膜显示出更高的水渗透性，但抑制性质略低于TFC膜。与由原始UIO-66和UIO-66-NH _（2）制备的TFN膜相比，由改性的UIO-66-NH _（2）制备的TFN膜显示出更好的排斥性能，因为其有机相中的优异分散性。

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