三维立体GR/有序介孔Bi2MoO6 异质结的设计合成及可见光催化性能

项目名称： 三维立体GR/有序介孔Bi2MoO6 异质结的设计合成及可见光催化性能

项目编号： No.21476033

项目类型： 面上项目

立项/批准年度： 2015

项目学科： 有机化学

项目作者： 董晓丽

作者单位： 大连工业大学

项目金额： 80万元

中文摘要： 半导体光催化技术是具有较好的应用前景的污染控制新技术之一，如何开发可见光响应的催化剂和提高量子效率是光催化技术急需解决的关键科学问题。本研究基于提高光催化剂的光吸收性能、光生电荷分离能力以及快速界面反应速率的视角，提出构建三维立体石墨稀(GR)/有序介孔Bi2MoO6(m-Bi2MoO6)异质结可见光催化剂，阐明其形成机理及构建过程的结构优化机制，获得光催化性能稳定的三维立体GR/m-Bi2MoO6的制备方法；期待在实现可见光吸收的同时，设计合成出具有较高光催化效率的新型异质结光催化剂，并研究其可见光催化降解水中难降解污染物的降解性能；阐明三维立体GR/m-Bi2MoO6催化剂的微观结构与其光催化性能之间的构效关系，分析影响其光催化性能的关键因素，探明其可见光催化降解水中污染物的降解机理、规律特点及反应机制。本项目的完成对于可见光催化剂的研究以及降解水中难降解污染物均有重要的科学意义。

中文关键词： 三维立体石墨烯；有序介孔Bi2MoO6；异质结；可见光催化剂

英文摘要： Semiconductor photocatalysis is one of promising pollution control techniques with practical application value, extending light absorption spectrum and enhancing the photocatalytic efficiency are the key scientific problems. Aiming to enhance their photocatalytic ability by the way of elivating the light absorption ability, photogenerated charge separation efficiency and interfacial reaction rate, the three-dimentional graphene (GR)/ ordered mesoporous BiMoO6 (m-BiMoO6) heterojunctions will be constructed as the visible-light-driven photocatalysts. The formation mechanism and the optimization of formation conditions will be firstly explored, and the fabrication method of the heterojunctions will be got. And then, the photocatalytic performance of the heterojunctions to elimate the water borne refractory pollutants will be evaluated. With the outcomes, the relationship of the micro-structure of the heterojunctions and their photocatalytic ability, the key factors affecting the photocatalytic ability, and mechanism of the photocatalytic elimanition of the pollutants will be obtained. These results will surely provide fundamental basis for the research of the efficient visible-light-driven photocatalysts and the degradation of the water borne refractory pollutants.

英文关键词： three-dimentional graphene;ordered mesoporous Bi2MoO6;heterojunction;visible-light-driver photocatalyst