新型金属氧簇-金属-芳香羧酸三元骨架材料(POMMOFs)的设计、合成及光催化性能研究

项目名称： 新型金属氧簇-金属-芳香羧酸三元骨架材料(POMMOFs)的设计、合成及光催化性能研究

项目编号： No.21501203

项目类型： 青年科学基金项目

立项/批准年度： 2016

项目学科： 数理科学和化学

项目作者： 肖利娜

作者单位： 周口师范学院

项目金额： 20万元

中文摘要： 针对传统光催化材料光谱响应范围窄，量子转化效率低，太阳能利用率低的问题，研究开发高量子效率的可见光响应型光催化材料具有重要意义。本项目选取具有大π键共轭体系的芳香羧酸配体为研究对象，用自组装法合成金属氧簇-金属-芳香羧酸三元骨架材(POMMOFs)。用共轭芳香羧酸配体的天线效应，敏化或增强金属离子的光催化活性。通过金属离子与不同芳香羧酸配体的配位来调控POMMOFs的能带间隙，以期获得具有较小能级差的光活性POMMOFs材料。此类材料兼具金属氧簇及金属-有机骨架材料（MOFs）的特点，具有广阔的应用前景。鉴于金属-有机骨架材料和金属氧簇优异的催化性能，POMMOFs也必将具有良好的催化活性。本课题拟重点研究POMMOFs在光催化降解水中有机污染物方面的催化活性，探索其催化性能与结构之间的关系，为具有高效可见光响应型POMMOFs光催化剂的设计合成提供新的思路和理论依据。

中文关键词： 金属氧簇；金属-有机骨架材料；自组装；光催化

英文摘要： In view of the limitation of traditional photocatalysts in the narrow spectral response range, low quantum conversion efficiency and low utilization rate of solar energy, it is necessary to develope excellent visible-light response photocatalytic materials. In this project, aromatic carboxylate ligands with π-conjugated system have been selected to synthesize Polyoxometalate-metal- aromatic carboxylate ternary frameworks (POMMOFs) by self-assembly technique. The photocatalytic activities of metal ions can be sensitized or strengthened through antenna effects of conjugated aromatic carboxylate ligands. The main problem in this project is regulating the band gaps of POMMOFs through coordination of metal ions and conjugated aromatic carboxylate ligands and trying to obtain photo active POMMOFs with smaller energy gaps. The materials not only have the characteristics of Polyoxometalates, but also have the characteristics of Metal-Organic Frameworks (MOFs), which will have a broad application prospect. Given the excellent catalytic properties of Polyoxometalates and MOFs, POMMOFs must have good catalytic activities. The photocatalytic properties for degrading organic organic pollutants in the water will be studied, and the structure-activity relationship will be analyzed, which provide new route and theoretical basis for the syntheses of excellent visible-light response novel photocatalytic POMMOFs materials.

英文关键词： Polyoxometalates;Metal-Organic Frameworks;self-assembly;photocatalysis