含多膦配体的银、金簇合物光催化剂的设计合成及其在催化降解水体芳基污染物中的应用

配位聚合物由于具有合成方便、化学性质稳定、富含金属中心等特征，近年来常被用于催化水体中有机污染物光降解。本项目拟将具有良好光敏性的Ag(I)和Au(I)离子以金属簇合物的形式引入到配位聚合物之中，用富含膦配位基团的多膦类配体作为桥联配体来稳定这些簇核，获得一系列性质稳定、结构明确、催化性能优良的光催化剂。将这些催化剂用于含硝基苯类、酚类和偶氮类污染物的废水的光催化氧化降解。测试催化剂的光电流响应和光电转换效率，对催化剂的能隙值进行理论计算，探索影响催化剂的光催化效率的影响因素。归纳配合物的结构与催化效率之间的关系，为高效光催化剂的设计与合成提供参考。本项目在开发功能配合物在水环境保护的应用方面具有重要的研究价值。

Coordination polymers have been used in catalyzing the photodegradation of organic pollutants in water bucause these compounds are readily prepared, highly stable and rich of metal centers. This project is planned to introduce the photosensitive Ag(I) and Au(I) ions into the coordination polymers as metal-rich clusters, and use multidentate phosphine ligands as bridging ligands to stabilize the cluster cores. A series of photocatalysts which have good stabilities, definite structures and excellent catalytic efficiencies are expected to be separated and then catalyze the oxidative photodecomposition of nitrobenzenes, phenols and azo dyes in waste water. The influence factors toward the catalytic efficiencies of the catalysts will be explored by measuring their photocurrent responses, testing their incident photon-to-electron conversion efficiencies (IPCE) and carrying out theoretical calculations on their energy gaps. We will examine the relationship between the structures of each catalyst and their catalytic efficiencies, and provide references for the design and synthesis of high-performance photocatalysts. This project will be of great importance in developing the applications of functional coordination compounds into the researches of water environment protection.