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静电调节的氧化石墨烯-共价有机框架膜,用于高流量排斥低分子量有机化合物

Niaz Ali Khan^1,2, Yasir Abbas¹, Hassan Younas¹

¹Interdisciplinary Research Center for Membranes and Water Security, King Fahd University of Petroleum & Minerals, Dhahran 31261, Saudi Arabia.

ACS applied materials & interfaces

|January 27, 2026

概括

我们开发了一种新的石墨烯氧化物-共价有机框架混合膜,用于高效的净化水. 这种先进的膜实现了高水流量和优秀的有机污染物排放,解决了膜技术的一个关键挑战.

科学领域:

材料科学材料科学材料科学
纳米技术纳米技术
化学工程是化学工程的重要组成部分.

背景情况:

设计具有高水流量和低分子量有机化合物 (LMWOCs) 的有效排斥的二维层膜是一个重大挑战.
石墨烯氧化物 (GO) 膜具有前景,但需要进行结构修改以提高性能.

研究的目的:

为了创建一个结构调节的氧化石墨烯-共价有机框架 (GO-COF) 混合膜.
调查控制水流和污染物排放的分离机制.
展示高性能膜设计的可扩展策略.

主要方法:

使用真空辅助自组装组装硫化COF纳米板和GO层.
膜结构的表征,包括层间间距和多孔性.
评估水的透性和排斥染料,如甲基蓝 (MB) 和甲基色 (MO).
分析分离机制,包括多南排除,尺寸选和层间重组.

主要成果:

GO-COF混合膜表现出扩大的层间距 (1.58 nm),并引入固定负电荷和微孔性.
实现了高的水透性 (193.5 L·m−2·h−1·bar−1) 和异常的排斥 (>99%) 的甲蓝.
证明了一种协同的分离机制,涉及静电排斥,尺寸选和自适应性间层重组.
由于适应性结构性行为,观察到增强的抗抗性.

结论:

GO-COF混合膜为高性能净水提供了一个有前途的解决方案.
这项研究为理解2D膜中的染料传输提供了一个机制框架.
这种以电荷为导向,可扩展的策略适用于开发用于消除持久有机微污染物的膜.

关键词:

2D 层状膜材料是二维的.污染LMWOC的污染水处理水.电荷辅助的分子分离.石墨烯氧化COF膜的使用层间的纳米通道工程.

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