Phenanthroline-Based Polyarylate Porous Membranes with Rapid Water Transport for Metal Cation Separation.,ACS Applied Materials & Interfaces

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Phenanthroline-Based Polyarylate Porous Membranes with Rapid Water Transport for Metal Cation Separation.
ACS Applied Materials & Interfaces ( IF 8.3 ) Pub Date : 2020-01-22 , DOI: 10.1021/acsami.9b22086
Dan Ren ₁ , Yu-Tao Jin _{1,

2} , Tian-Yin Liu ₁ , Xiaolin Wang ₁

Affiliation

The selective separation of ions in terms of extremely similar size and properties remains an important challenge in water purification. We innovated a kind of porous nanofilm via interfacial polymerization using rigid heterocyclic ligands to achieve high valent cation selectivity and rapid water/ion transport. The interconnected microporosity and uniformly distributed cation-affinitive sites of the ultrathin membranes enabled water permeation (7.5 L m-2 h-1 bar-1), ion permeance of Na+ (1.5 mol m-2 h-1 bar-1), and Mg2+/Na+ permselectivity (2.1) during nanofiltration. The forward osmosis exhibited a prominent water flux of 95 LMH at 1 M NaCl draw solution, which expanded various applications. The polyarylate membranes comprising 4,7-diphenyl-1,10-phenanthroline showed a higher water permeation and ion selectivity than the planar monomers, e.g., resorcinol. A distinct fluorescence responsiveness existed between membranes and cations for the interaction characterization. Host-guest nuclear magnetic resonance (NMR) spectroscopy and solid-state nuclear magnetic resonance spectroscopy characterized the preferential affinitive of divalent/high-valent cations in the interconnected microporous powders; an ultraviolet spectrophotometer characterized the light responsiveness of the porous nanofilms. Such an active membrane has potential applications in selective separation and adsorption of cations, photocatalytic materials, photosensors, and other fields.

中文翻译：

邻菲咯啉基聚芳酯多孔膜，具有快速的水传输能力，可用于金属阳离子分离。

就极其相似的尺寸和性质而言，选择性分离离子仍然是水净化中的重要挑战。我们使用刚性杂环配体通过界面聚合创新了一种多孔纳米膜，以实现高价阳离子选择性和快速的水/离子传输。超薄膜的相互连接的微孔和均匀分布的阳离子亲和力位点可实现水渗透（7.5 L m-2 h-1 bar-1），Na +的离子渗透（1.5 mol m-2 h-1 bar-1）和纳滤过程中Mg2 + / Na +的选择性（2.1）。正向渗透在1 M NaCl汲取溶液中显示出95 LMH的显着水通量，从而扩展了各种应用。包含4,7-二苯基-1,10-菲咯啉的聚芳酯膜比平面单体具有更高的水渗透性和离子选择性，例如间苯二酚。膜和阳离子之间存在明显的荧光响应性，以进行相互作用表征。主客体核磁共振波谱和固态核磁共振波谱表征了互连微孔粉末中二价/高价阳离子的优先亲和力。紫外分光光度计表征了多孔纳米膜的光响应性。这样的活性膜在阳离子的选择性分离和吸附，光催化材料，光传感器和其他领域中具有潜在的应用。主客体核磁共振波谱和固态核磁共振波谱表征了互连微孔粉末中二价/高价阳离子的优先亲和力。紫外分光光度计表征了多孔纳米膜的光响应性。这样的活性膜在阳离子的选择性分离和吸附，光催化材料，光传感器和其他领域中具有潜在的应用。主客体核磁共振波谱和固态核磁共振波谱表征了互连微孔粉末中二价/高价阳离子的优先亲和力。紫外分光光度计表征了多孔纳米膜的光响应性。这样的活性膜在阳离子的选择性分离和吸附，光催化材料，光传感器和其他领域中具有潜在的应用。

更新日期：2020-02-03

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