光催化材料的内建电场的构建及其促进光生载流子分离的物理化学过程

项目名称： 光催化材料的内建电场的构建及其促进光生载流子分离的物理化学过程

项目编号： No.21333006

项目类型： 重点项目

立项/批准年度： 2014

项目学科： 有机化学

项目作者： 黄柏标

作者单位： 山东大学

项目金额： 300万元

中文摘要： 光催化技术是解决目前能源短缺和环境污染的有效解决手段之一，然而目前光催化材料较低的催化效率大大限制了其在实际生活中的大规模应用。经过多年的研究，人们在拓展光催化材料光谱响应范围方面已取得较大突破，而光生载流子的分离效率依然较低，成为影响光催化活性的最主要问题。进一步促进光催化材料光生载流子的分离，发展有利于光生载流子分离的材料设计理论，并研究其物理化学过程及机理，对进一步拓展光催化材料体系，提高光催化活性，推动光催化技术的发展及其实际应用具有及其重要的科学意义。因此，本项目拟以在可见光光催化材料方面的相关研究为基础，提出利用极性材料的自发极化电场作为促进光生载流子分离的驱动力，开展新型高效的极性光催化材料的制备方法、设计理论和光催化反应中的物理化学过程及机理的研究，并探索其在解决能源与环境问题中的实际应用，进一步推动光催化技术的发展及其实用化。

中文关键词： 内建电场;载流子分离;光催化;物理化学过程;

英文摘要： Photocatalysis is one of the most potential technique to solve Energy Crisis and Environmental pollution. However, the low photocatalytic activity greatly limit its practical applications. After years of research, it has been made a breakthrough on expanding the visible light responses of photocatalysts, whilist the separation efficiency of photoinduced charge carriers is still low, which has become the main problem to further enhance the photocatalytic activity. To further promote the separation of charge carriers during the photocatalytic process, develop correlative theories on designing efficient photocatalysts, and investigae the physico-chemical processes, can not only rich the extent of photocatalysts and increase the photocatalytic activity, but also be important for the further development and practical applications of photocatalysis. Therefore, on the basis of our previous investigations on visible light photocatalysts, in this project we proposed utilizing the spontaneous polarization electric field as the driving force to promote the separation of photoinduced charge carriers to further improve the photocatalytic activity, and investigate the synthetic method, designing theories and the physico-chemical processes of photocatalysis, and the practical applications on solving Energy crisis and Environmental problems.

英文关键词： Built-in-Field;Charge carriers' separation;Photocatalysis;Physico-Chemical Processes