BiOBr可见光催化剂的可控结构与光催化降解染料废水性能的构效关系研究

项目名称： BiOBr可见光催化剂的可控结构与光催化降解染料废水性能的构效关系研究

项目编号： No.21207091

项目类型： 青年科学基金项目

立项/批准年度： 2013

项目学科： 环境化学

项目作者： 霍宇凝

作者单位： 上海师范大学

项目金额： 25万元

中文摘要： 以利用清洁能源解决有机染料废水的环境污染为目标，针对光催化材料太阳能利用率低以及量子效率低等关键科学问题，为了揭示光催化剂微观结构与光利用性能的关系，探索光催化的反应机制，本项目拟采用结构导向剂辅助醇热法、离子液体辅助喷雾干燥结合超临界萃取技术、模板剂外延生长法等非常规催化剂制备手段，合成可多次光反射的片状花球型、核壳型和双层结构BiOBr可见光催化剂。通过研究BiOBr光催化降解模拟有机染料废水的性能，考察反应影响因素并筛选催化剂。基于多种表征手段探索BiOBr微观结构与光利用性能的效应关系，设计最有利于提高光利用率的微观结构，阐述BiOBr结构特点与光催化反应的构效关系，系统研究光催化反应历程，探索反应机理，以实现光催化高效处理污染物并奠定理论研究基础。

中文关键词： 工业有机废水；BiOBr光催化剂；光催化反应器；构效关系；可见光

英文摘要： This proposal will attempt to solve the key scientific problems in photocatalysis including the poor utilization of solar light and the low quantum efficiency, based on the object of eliminating organic dyeing wastewater by utilizing the clean energy. In order to determine the relationship between controllable structure and photocatalysis property and study the photocatalytic reaction mechanism, various structures with multi-light reflection effect in BiOBr visible-light photocatalysts, such as flower-like, core-shell and double-shell microspheres, will be prepared via solvothermal reaction assisted with structure-director, ionic liquid assisted spray hydrolysis combined with supercritical treatment, and process of epotaxial growth on template. Furthermore, influence factors during photocatalysis reaction will be discussed and the optimum catalyst will be selected by measuring the visible-light photocatalytic property on BiOBr for the degradation of dyeing wastewater. Relationship between controllable structure and photocatalytic property with light-utilization behaviour will then investigated based on various characterizations for the design of microscopic structure beneficial to increasing the light utilization. The photocatalytic degradation process and the possible reaction mechanism will be proposed by syst

英文关键词： Industry organic wastewater；BiOBr photocatalysts；Photocatalytic reactor；structure-property relationship；Visible light