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使用二维金属有机框架介层纳米过膜进行有机微污染物的提升去除

Ruiying Li¹, Lingyue Zhang¹, Shuang Zheng¹

¹Department of Civil Engineering, The University of Hong Kong, Pokfulam, Hong Kong Special Administrative Region of China.

|May 24, 2025

概括

这项研究增强了薄膜复合材料纳米过膜与2D金属有机框架纳米片. 改进的膜显示优异的有机微污染物的去除,以清洁水的再利用.

科学领域:

材料科学材料科学材料科学
环境工程环境工程
化学工程是化学工程的重要组成部分.

背景情况:

有机微污染物 (OMP) 构成重大环境和健康风险.
传统的薄膜复合材料 (TFC) 纳米过 (NF) 膜难以有效地去除OMP.
开发先进的膜对于水的净化和再利用至关重要.

研究的目的:

为了提高TFC NF膜的性能,有效地去除有机微污染物 (OMP).
为了研究使用二维 (2D) (II) 四氧化(4-碳基-) 氨酸 (Zn-TCPP) 金属-有机框架 (MOF) 纳米片作为介层.
提高膜水透率和OMP排斥能力.

主要方法:

使用2D Zn-TCPP MOF纳米板间层制造TFC NF膜.
使用聚乙烯糖醇 (PEG) 辅助剥皮技术,以防止纳米板聚合.
在纯水透,盐排斥和OMP去除方面表征膜性能.

主要成果:

均分布的MOF间层显著提高了纯水的透率,从10.6升升至32.1升m−2h−1 bar−1.
实现了高硫酸盐 (Na2SO4) 排斥率为97.0%.
由于膜负电荷和水友性增加,在OMP去除方面取得了显著的改善.

结论:

将二维MOF纳米片作为中间层是提高TFC NF膜性能的一个有希望的策略.
优化的膜表现出优越的水流和OMP去除效率.
这些发现支持开发高性能膜,用于有效的OMP清除和水再利用应用.

关键词:

介层介层介层介层介层金属有机框架 (MOFs) 是指金属有机框架.纳米过膜是一种纳米过膜.有机微污染物有机微污染物聚胺是一种聚胺.

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