用MOF装饰的轨道蚀刻膜用于U(VI) 离子吸附去除
Saniya R Rakisheva1,2, Anastassiya A Mashentseva3,4, Nuraiym B Yessengaliyeva1,2
1Department of Nuclear Physics, New Materials, and Technologies, L. N. Gumilyov Eurasian National University, Astana, 010008, Kazakhstan.
Scientific reports
|October 17, 2025
概括
这项研究开发了新的金属有机框架功能化轨道蚀刻膜 (MOF@TeMs),以有效地从水中去除. 这些稳定,可重复使用的MOF固定膜具有高吸附能力和选择性,为水处理提供了有前途的解决方案.
科学领域:
- 材料科学 材料科学 材料科学
- 环境科学 环境科学
- 纳米技术纳米技术
背景情况:
- 水中的污染对环境和健康构成重大风险.
- 现有的除水处理方法经常面临效率,稳定性和成本方面的挑战.
- 开发先进的吸附材料对于有效的整治至关重要.
研究的目的:
- 开发和描述金属有机框架功能化轨道蚀刻膜 (MOF@TeMs) 用于从水溶液中去除.
- 研究金属有机框架在聚合物膜上的固定策略,以提高稳定性和可重复使用性.
- 评估开发的MOF@TeMs用于整治的吸附性能,动力学,热力学和选择性.
主要方法:
- 通过UV诱导的RAFT聚合,然后通过水解和基改性对PET膜进行聚合.
- 基于的MIL-101 MOFs与亚基的合成后功能化.
- 用铜催化酸循环添加 (点击化学) 将酸功能化MOFs对基因修饰膜进行共价固定.
- 使用FTIR,XPS,SEM/EDX,BET和接触角测量进行表征.
- 吸附实验以确定容量,动力学,等温和和选择性.
主要成果:
- 成功地将MIL-101 MOFs对轨道蚀刻膜进行共价固定,从而产生稳定的MOF@TeMs.
- 在pH 6.3.3下达到418毫克g-1的高吸附能力.
- 吸附动力学遵循伪二阶模型,同热量最适合弗洛伊德利希方程.
- 该材料对其他竞争金属离子对U ((VI) 具有强烈的选择性.
- 在5个再生周期后,MOF@TeMs保留了70%的吸附能力.
结论:
- 开发的MOF@TeMs提供了一个稳定,可重复使用和高效的平台,用于从水中去除.
- 共价点击固定化策略对于将MOF集成到用于水疗应用的膜上是有效的.
- 膜架构的机械稳定性和易操作性凸显了其在工业规模的整治中的实际潜力.
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