可见光响应的多核钨簇基分子催化体系的构筑及其光降解有机污染物研究

项目名称： 可见光响应的多核钨簇基分子催化体系的构筑及其光降解有机污染物研究

项目编号： No.21301020

项目类型： 青年科学基金项目

立项/批准年度： 2014

项目学科： 数理科学和化学

项目作者： 姚爽

作者单位： 长春理工大学

项目金额： 24万元

中文摘要： 环境污染和能源短缺是人类社会面临的两个重大问题和挑战，开发利用新型、高效的可见光催化剂是解决环境污染问题和开发可持续能源的重要途径之一。为克服传统多酸化合物仅在紫外光区有催化活性的缺点，充分利用清洁高效的太阳能处理环境污染问题。本项目拟使用具有可见光活性的过渡金属离子，光敏特性有机分子等功能性基团对高配位活性的缺位多酸片段进行功能化，从而将多钨酸盐的光吸收区域红移至可见光区，实现多钨酸盐化合物在可见光区的快速可逆多电子氧化还原转移，得到可见光响应的多核钨簇类分子催化剂。探索其在光催化领域的特性，着重进行可见光催化降解有机污染物的研究，构筑多钨酸盐基可见光分子催化体系，分析催化剂分子中多钨酸盐簇的核度、功能性基团的种类对产物光催化活性的影响，从中筛选出环境友好的有机污染物光降解催化剂，开发出有效的光能转换材料。

中文关键词： 多金属氧簇；过渡金属；光催化；有机污染物；

英文摘要： Environmental pollution and energy shortage are two major problems and challenges which need to be solved by human society. The development and utilization of new and effective visible-light driven photocatalyst which can absorb and utilize the major part of solar energy is an important problem for the control of environmental pollution and the development of continuable energy. In order to use the clear and high-effective solar energy to deal with the environmental problem and overcome the shortage of traditional POMs which only active under UV-light, we are intend to design and synthesis the visible-light driven polytungstate compounds, achieved by adjusting the nuclear degrees and the functional groups of the polytungstate clusters, which will move the light absorption area to visible region and achieve the reversible multi-electron transfer reaction under visible light. This project will explore the characteristics of the polytungstate clusters in the field of photocatalysis, and focus on the study of their applications on the photodegradation of organic pollutants. During the construction of polytungstate based visible light catalysis system, the impact of the nuclear degrees and the type of functional groups of the polytungste clusters on the catalytic efficiency will be discussed in order to point out env

英文关键词： Polyoxometalate；transition metal；photocatalysis；organic pollutants；