金属有机骨架材料吸附水中氟离子机理的高场固体NMR研究

Exploration of methods and materials for purification of fluoride in water is an urgent need to solve the drinking water type fluoride poisoning endemic, which is an important research topic concentrated by many domestic and foreign research institutions. In this project, we will use the structural stability of porous metal-organic frameworks. On the basis of coordination chemistry and structural chemistry basic concept, Ca, Mg and Al ions and poly-carboxylic acid organic molecules will be linked together with the coordination bond to construct a porous framework structure via molecule assembly design and material synthetic ways. Dependent on this, the assembly concept and methods for new adsorption materials with selective sorption of fluoride and good structural stability simultaneously are developed. Through high field solid NMR technology, the basic principle of the adsorption of fluoride onto MOFs will be studied and the adsorption model of MOFs in aqueous circumstance will be constructed. The expected results of this project can be considered as the theoretical basic and technical potential for development of metal-organic frameworks materials applied in drinking water purification.

探索水中氟离子的净化方法和材料是解决饮水型氟中毒地方病的迫切需要，是备受国内外研究机构关注的重要研究课题。在本项目中，我们将利用多孔金属有机骨架的结构稳定性，从配位化学和结构化学的基本概念出发，运用分子组装设计及材料合成等手段，把钙、镁、铝离子和多羧酸有机分子通过配位键组装起来构建多孔骨架结构，发展兼具选择性吸附氟离子和优异结构稳定性的新型吸附材料的组装原理和方法。通过高场固体NMR技术探索金属有机骨架材料吸附水中氟离子的基本原理，构建金属有机骨架在水环境中的吸附模型。本项目的预期成果将为发展基于金属有机骨架的饮用水净化材料提供理论基础和技术可能。

本项目利用多孔金属有机骨架的结构稳定性，从配位化学和结构化学的基本概念出发，运用了分子组装设计及材料合成等手段，把铝离子和均苯三甲酸、对苯二甲酸通过配位键组装起来构建多孔骨架结构，发展出兼具选择性吸附氟离子和优异结构稳定性的新型吸附材料的组装原理和方法。通过高场固体NMR技术探索金属有机骨架材料吸附水中氟离子的基本原理，构建了金属有机骨架在水环境中的吸附模型。本项目的成果将为发展基于金属有机骨架的饮用水净化材料提供理论基础和技术可能。