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通过有机纳米粒子辅助接口聚合来实现有效的染料/盐分离的纳米过膜

Tao Yao¹, Mingyu Zhang¹, Dongli Guo¹

¹State Key Laboratory of Advanced Processing and Recycling of Non-ferrous Metals, Department of Polymeric Materials Engineering, School of Material Science and Engineering, Lanzhou University of Technology, Lanzhou 730050, China.

Langmuir : the ACS journal of surfaces and colloids

|April 16, 2025

概括

超性纳米颗粒通过创造表面纹来增强纳米过膜,增强水流和染料排斥. 这项创新通过提高膜性能和稳定性来解决水污染和缺水问题.

科学领域:

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

背景情况:

纳米过膜对于净水至关重要,但存在低流量和不清晰的纹机制.
接口聚合物膜面临着水透率低的挑战,阻碍了它们的实际应用.
了解纳米填充剂诱导的纹是改善膜性能的关键.

研究的目的:

为了合成超性纳米粒子用于接口聚合.
研究这些纳米粒子对膜表面形态和性能的影响.
为了提高纳米过膜的性能,以提高水处理效率.

主要方法:

合成l-histidine修饰的纳米粒子.
将纳米颗粒纳入接口聚合过程.
膜表面形态,水友性和分离性能的表征.

主要成果:

纳米粒子添加诱导了多层纹,增加了表面积和水友性 (水接触角度从51.85°减少到28.72°).
一种含有0.1%重量%改性多巴胺颗粒的纳米过膜实现了145.57 L m−2 h−1 MPa−1的水透率.
观察到99%以上的染料排斥和高无机盐离子透性,证明了高效的染料/盐分离.

结论:

超性纳米颗粒有效诱导膜的接口聚合和表面纹.
修改后的膜显著增强了水友性,水流和分离性能.
这种方法为开发稳定且高度适用的纳米过膜来应对水资源挑战提供了一个有希望的战略.

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