高性能聚胺胺多孔膜,由现场修改/不溶剂诱导的分相策略制备,用于从海水中提取.
Yan Yu1, Jingyuan Liu1, Qi Liu1
1Key Laboratory of Superlight Materials and Surface Technology, Ministry of Education, Harbin Engineering University, Harbin 150001, China.
ACS applied materials & interfaces
|September 9, 2024
概括
这项研究提出了一种增强的聚胺多孔膜 (PAOM),用于从海水中有效地提取. 这种新型膜表现出卓越的吸附能力,选择性和可回收性,以实现可持续的回收.
科学领域:
- 材料科学 材料科学 材料科学
- 环境化学环境化学
- 化学工程是化学工程的重要组成部分.
背景情况:
- 海水含有丰富的 (U ((VI)) 储量,需要具有成本效益的提取方法.
- 开发先进的材料,以有效地从海洋环境中回收是至关重要的.
研究的目的:
- 制造一种增强的聚胺多孔膜 (PAOM),用于从海水中提取.
- 研究开发的PAOM的结构,机械和吸附性能.
主要方法:
- 使用现场前胺基胺修饰的聚烯二 (PAN) 溶液与非溶剂诱导相分离 (NIPS) 结合制造PAOM.
- 纳入聚烯 (PVP) 以在膜内创建一个多孔结构.
- 膜性质的表征,包括机械强度,水友性和U的吸附性能.
主要成果:
- 与对照组 (AOPM) 相比,PAOM表现出增强的机械强度和水友性.
- 与AOPM相比,PAOM显示了相对较高的平衡吸附能力 (1.72倍) 和分布系数 (5.51倍) 对于U(VI).
- 膜表现出良好的可回收性 (在7个周期后减少6.15%的容量) 和14天后的动态吸附性能 (2.03 mg·g−1 U(VI).
结论:
- 开发的PAOM,通过现场修改和多孔结构设计,为从海水中提取提供了卓越的性能.
- 膜的增强吸附能力,选择性,机械强度和可回收性使其成为可持续回收的有希望的材料.
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