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在共价有机框架膜中的Zwitterionic纳米通道,以改善流动和防物质

Wenyan Ji^1,2,3, Ming Liu⁴, Yuping Li^2,5

¹Department of Chemistry, Tianjin University, Tianjin, 300072, China.

Small (Weinheim an der Bergstrasse, Germany)

|October 23, 2024

概括

为了净化水,合成了Zwitterionic共价有机框架 (COF) 膜. 这些膜表现出优越的防性质和高透性,显示出先进的水处理应用的前景.

科学领域:

材料科学材料科学材料科学
膜技术膜技术膜技术
纳米技术纳米技术

背景情况:

兹维特里昂材料为净化水提供了出色的防腐性能.
共价有机框架 (COF) 具有有序的通道和功能组,非常适合创建zwitterionic表面.

研究的目的:

准备一个具有精确结构和均电荷分布的zwitterionicCOF膜.
为了研究zwitterionic COF膜的防性能和分离特性.

主要方法:

在气液接口上使用4,4'-diaminobiphenyl-2,2'-sisulphonic酸 (SA) 和乙基化物 (EB) 与1,3,5-triformylphloroglucinol (TP) 合成zwitterionicCOF膜.
对抗牛血清白蛋白和酶的抗质性质的评估.
测量水的透性和染料/盐分离的选择性.
使用实验和分子动力学计算来阐明机制.

主要成果:

齐维特的COF膜表现出对负电荷和正电荷蛋白质污染物的有效抵抗力,实现流量回收率分别为97%和85%.
膜具有很高的水透性 (146 L m−2 h−1 bar−1) 和出色的染料/盐分离选择性.
在膜表面和孔壁上形成一个连续而紧密的水化层,对于抵抗污染物吸附至关重要.

结论:

合成的zwitterionic COF膜具有卓越的抗 capabilities 能力和高分离性能.
精确的框架结构和均的电荷分布有助于膜的有效性.
这些膜显示出高性能净水应用的巨大潜力.

关键词:

抗污染的纳米过膜可以防止污染.共价有机框架 (COF) 是一种共价有机框架.空间排除效应的空间排除效应这种体具有zwitterionic膜.

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