NiFe-LDH和PES/SPSf矩阵对表面水中的金属离子排斥效率的协同效应
Raphael N Biata1, Meladi L Motloutsi1, Funeka Matebese1
1Institute for Nanotechnology and Water Sustainability, College of Science, Engineering and Technology, University of South Africa, Roodepoort 1709, South Africa.
Membranes
|February 26, 2026
概括
结合聚乙硫 (PES),硫改性聚硫 (SPSf) 和NiFe层双氧化物 (LDHs) 的新膜显著改善了水净化. 这些先进的膜提供了增强的流量,防物质和有效的重金属去除,以实现可持续的水处理.
科学领域:
- 材料科学 材料科学 材料科学
- 环境科学 环境科学
- 化学工程是化学工程的重要组成部分.
背景情况:
- 开发高效和耐用的膜对于应对全球清洁水挑战至关重要.
- 现有的膜往往与污染和有限的重金属排斥作斗争.
研究的目的:
- 通过将NiFe层的双氧化物 (LDHs) 纳入聚硫 (PES) 和硫改性多硫 (SPSf) 基质中,创建新的多功能膜.
- 为了提高膜的水友性,表面结构和整体分离性能.
主要方法:
- 使用PES,SPSf和不同度的NiFe-LDH制造复合膜.
- 通过FTIR,SEM,水接触角度和泽塔电位测量进行表征.
- 膜性能的评估,包括纯水流,牛血清白蛋白 (BSA) 排斥,防性质和重金属 (Cd2+,Pb2+,Cu2+) 去除.
主要成果:
- 最佳膜 (M3,2重% NiFe-LDH) 的纯水流量几乎是原始膜的三倍.
- M3实现了92.4%的BSA排斥,并表现出优异的防腐性能,具有高流回收率 (BSA超过65.9%,表面水超过71.2%).
- 观察到重金属的高去除效率:Cd2+的91%,Pb2+的93%和Cu2+的88%.
结论:
- PES/SPSf和NiFe-LDH的协同作用组合有效地提高了膜的水友性,防能力和分离性能.
- 这些多功能膜为实际和可持续的水处理提供了有希望的解决方案,解决了污染和低金属离子排斥的挑战.
- 开发的膜显示了先进的净水应用的潜力,包括去除有机污染物和重金属.
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