氧化铁-Ag/AgX(X=Cl,Br,I)等离子体共振型多元复合光催化材料的构筑及其可见光催化性能和催化机理研究

项目名称： 氧化铁-Ag/AgX(X=Cl,Br,I)等离子体共振型多元复合光催化材料的构筑及其可见光催化性能和催化机理研究

项目编号： No.51471121

项目类型： 面上项目

立项/批准年度： 2015

项目学科： 一般工业技术

项目作者： 吴伟

作者单位： 武汉大学

项目金额： 85万元

中文摘要： 探索高效利用太阳能光驱动的光催化体系是解决当前严峻的能源短缺和环境污染问题的关键。针对国内外光催化材料的发展现状，结合本课题组在光催化研究方面的最新进展，本项目拟开展氧化铁-Ag/AgX（X=Cl，Br，I）等离子体共振型复合光催化材料的设计、可控制备、结构调控、可见光催化应用和机理研究。结合Ag/AgX的可见光响应特性和可剪裁性，实现其与氧化铁的有效耦合，合成具有良好稳定性，可见光驱动，可磁回收的等离子体共振型复合光催化材料。采用理论计算与实验相结合模式，对复合材料的结构和光催化活性进行调控，研究不同界面与表面结合方式对材料光生载流子分离效率的影响机理，考察其回收再利用的性能，最终实现氧化铁-Ag/AgX（X=Cl，Br，I）等离子体共振型复合光催化体系效能的调控、优化和光催化机理研究。该类复合体系的研发可望在利用太阳能降解有机污染物领域发挥更大的作用，具有重要理论价值和广阔的应用前景。

中文关键词： 磁性铁氧体；复合纳米材料；贵金属；表面等离子共振；光催化

英文摘要： The strategy for explore of efficient sunlight-driven photocatalytic system is the key role in solving current urgent energy shortage and environmental pollution issues. Combining with the recent progress of photocatalytic materials and latest progress in our group, we propose to design, controllable synthesis and apply the magnetic recyclable iron oxides-Ag/AgX (X=Cl, Br, I) plasmonic composite photocatalysts, and study the methods of structure regulation and mechanism of visible light driven photocatalysis. In this project, the structure and photocatalytic efficiency of the composite materials would be tailored, and the mechanism of separate rate of photogenerated electron-hole pairs in the different binding forms of the interface and surface are studied experimentally and theoretically. Moreover, the magnetic recyclable performance of the composite photocatalysts will be investigated. The aim of this project is constructed and realized the magnetic recyclable iron oxides-Ag/AgX (X=Cl, Br, I) plasmonic composite system with high efficiency, tailorability and definite photocatalytic mechanism. Such composite photocatalytic system may be developed as one of the most important subjects in the field of photocatalytic oxidation of organic pollutants under sunlight illumination, which has important theoretical value and broad application prospects.

英文关键词： Magnetic iron oxide;Composite nanomaterials;Noble metal;Plasmonic;Photocatalytic