纳米态多元硫化物离子交换材料的控制合成、结构与性能

Research on the controlled synthesis, structure and performance of nanostructured poly-sulfide ion-exchange materials is a frontier content in the field of material chemistry. Nano structured polysulfide ion-exchange materials have many advantages such as high surface area, large ion-exchange capacity, rapid speed for the separation of trace elements, and et al, but just limited research has been carried out in this fields in recent years. This study will focus on the synthesis, structure adjustment and the ion exchange property of the assembled 2D nanostructures of multivariate sulfide. The research will carried out in the following several aspects: (1) Research on the relationship between the controlled synthesis, surface structure, and properties will be carried out to elucidate the influence on the physico-chemical parameters such as the components, surface area, and microstructure by the material preparation method and related factors. (2) Investigation on ion-exchange behavior and action mechanism of heavy metal ions on the surface of 2D poly-sulfide nanostructures in different form will be done by kinetic studying on the adsorption and ion-exchange processes. (3) Exploration on the ion-exchange behavior of heavy metal ions in different forms on the surface of the multivariate sulfide nanomaterials. The purpose of this research work is to improve related knowledge on the surface physical and chemical condition, and even the assembly mechanism of 2D nanostructure in organic solvent, finally, the research results will provide references for the study and application of two dimensional nanomaterials and novel polysulfide ion-exchange materials.

纳米态多元硫化物离子交换材料的控制合成，结构与性能研究是材料化学研究领域的一个前沿内容。纳米态硫化物离子交换材料具有高比表面积、交换容量大、快速分离痕量元素等优点，且相关研究尚处于起步阶段。本研究侧重于多元硫化物二维纳米结构组装体的合成、结构调控以及其离子交换性能方面的研究。主要开展以下研究工作：（1）通过考察材料制备方法和条件对其物相组成、比表面积、微观结构等物化参数的影响，阐明多元硫化物二维纳米结构组装体的调控制备、材料表界面结构，与物化性能的关系；（2）结合吸附和离子交换过程动力学规律的研究，探索重金属离子在不同形态多元硫化物纳米材料表面的交换行为与作用机制；（3）不同形态重金属离子在多元硫化物二维纳米结构组装体表面的离子交换行为的比较研究。旨在通过本研究工作的开展，深化对相关多元硫化物二维纳米结构组装体的表面物理化学状态以及组装转化过程机制的认识，为新型离子交换材料的研究提供参考