稀土元素对膜的吸附功能通过兰莫杜林衍生来实现
Lianna Johnson1, Christine E Duval1
1Department of Chemical and Biomolecular Engineering, Case Western Reserve University, 10900 Euclid Avenue, Cleveland, Ohio 44106, United States.
Langmuir : the ACS journal of surfaces and colloids
|April 2, 2025
概括
这项研究开发了一种质功能化膜,用于稀土元素 (REE) 分离. 添加一个水友性共纳体增加了REE结合能力,但选择性略有降低.
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.
- 生物技术是生物技术.
背景情况:
- 稀土元素 (REEs) 对现代技术至关重要,需要有效的分离方法.
- 使用-金属亲和力的生物吸收剂为选择性REE回收提供了一个有希望的途径.
- 提高结合能力,同时保持选择性,仍然是生物吸收剂应用的关键挑战.
研究的目的:
- 开发和描述用于REE分离的质功能化膜吸附剂.
- 为了研究水友性共纳体对膜特性和REE结合的影响.
- 评估开发系统中约束能力和选择性之间的权衡.
主要方法:
- 电膜通过水友性 (2-基乙基甲酸盐) 和疏水性 (基甲酸盐) 单体的共聚化而功能化.
- 测量了负荷,REE亲和力和对兰 (La) 和 (Nd) 的结合能力.
- 分析了膜水友性,形态学和吸附同热体.
主要成果:
- 与水友性单体的共聚化提高了的可访问性和在水溶液中的REE结合能力.
- 添加2-基乙基甲酸盐提高了REE结合水平.
- 对于新而不是兰他 (Nd/La) 的选择性随着水友性comonomer从2.3降至1.1
结论:
- 功能化膜中的水友性共体可以增加REE结合能力.
- 优化水友性和选择性之间的平衡对于使用生物吸收剂的实际REE分离至关重要.
- 质功能化膜显示了REE回收的潜力,需要进一步优化以提高选择性.
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