用于饮用水中微量污染物实时检测和去除一体化的双功能稀土-有机框架材料的设计与构筑

The integration of real-time sensing and efficient removal of heavy metal ions and small organic molecules is a challenging task in drinking water treatment. Metal-organic frameworks (MOFs) provide a new opportunity to overcome this problem because of their unique porosities, large surface area and excellent luminescent sensing performance. This proposal intends to design and synthesis a series of organic ligands containing recognition and capture groups according to the characteristics of the pollutants, and then the lanthanide-organic frameworks will be assembled through the solvothermal reaction between the lanthanide ions and organic ligands. Through the implementation of this proposal, the design theories and controllable assembly of highly water-stable lanthanide MOFs will be established. The interaction between MOF materials and pollutants will be investigated and the selective capture mechanism of pollutants will be explained. In addition, the influence of electron transfer and energy transfer in MOFs on luminescent sensing properties will be investigated, thus enabling the lanthanide MOF materials to fulfill highly selective and sensitive luminescent detection for different trace pollutants in drinking water. It is believed that the results will further facilitate the development of bifunctional lanthanide-organic frameworks with excellent luminescent sensing property and efficient removal performance, and will offer the design theories, critical materials and assembly methods for the integration of real-time detection and efficient removal of trace pollutants in drinking water treatments.

同步实现重金属离子、有机小分子等微量污染物的动态检测和高效去除是饮用水处理领域的挑战性课题，金属-有机框架材料因其具有独特的多孔结构、极大的比表面积、良好的功能可修饰性以及优异的荧光检测性能为解决上述多功能集成难题提供了新的机遇。本项目拟针对饮用水中不同污染物的结构特征，设计合成含识别捕获基团的有机配体，将其与稀土离子配位制备新型稀土-有机框架材料，建立高水相稳定的稀土-有机框架材料的可控组装方法，揭示框架材料与污染物的相互作用及其选择性去除机理，阐明稀土-有机框架材料中的能量传递和电子转移规律及其与荧光检测的关联机制，建立针对不同污染物的高选择性、高灵敏度的荧光检测方法，探索高灵敏荧光检测性能和高去污染能力协同作用的最佳优化途径，研制开发兼具优异荧光检测特性和高效捕获去除性能的双功能稀土-有机框架材料，为实现饮用水中微量污染物的实时检测与高效去除一体化提供设计思路、关键材料和组装方法。

同步实现重金属离子、有机小分子等微量污染物的动态检测和高效去除是水源监控和水质处理领域的一个挑战性课题，金属-有机框架材料因其具有独特的多孔结构、极大的比表面积和优异的荧光检测性能为解决这一难题提供了新的机遇。本项目针对水中不同污染物的结构特征，设计合成了含识别与捕获基团的有机配体，并将其与稀土离子配位制备新型稀土-有机框架材料，研究建立了高水相稳定的稀土-有机框架材料的可控组装方法，揭示了稀土-有机框架材料与污染物的相互作用及其选择性捕获机理，阐明了稀土-有机框架材料内的能量传递和电子转移规律及其与荧光检测之间的内在关联机制，建立了针对不同污染物的高选择性、高灵敏度的荧光检测方法，探索了高灵敏荧光检测性能和高去污染能力协同作用的最佳优化途径，研制开发出兼具优异荧光检测特性和高效捕获去除性能的双功能稀土-有机框架材料，为实现水中微量污染物的实时检测与高效去除一体化提供了设计思路、关键材料和组装方法。