半导体单晶光催化剂上晶面间光生电荷分离研究

项目名称： 半导体单晶光催化剂上晶面间光生电荷分离研究

项目编号： No.21503216

项目类型： 青年科学基金项目

立项/批准年度： 2016

项目学科： 数理科学和化学

项目作者： 李仁贵

作者单位： 中国科学院大连化学物理研究所

项目金额： 21万元

中文摘要： 本项目通过对单晶光催化剂上不同暴露晶面间电荷分离的认识，构筑氧化和还原双助催化剂在空间上分离的光催化剂体系以提高光生电荷的分离和利用效率，发展高效的光催化剂体系；结合光谱表征和理论计算，深入研究单晶光催化剂上光生电子和空穴的分离和传输过程，认识光生电荷分离的微观机理。本项目旨在为理性合理地构筑高效光催化剂体系提供新的研究策略。

中文关键词： 光催化；暴露晶面；电荷分离；助催化剂；单晶

英文摘要： Based on the findings of photogenerated charge separation between different facets of a crystal-based photocatalyst, this project will aiming to construct high efficient ohotocatalyst systems with reduction and oxidation cocatalysts spatially separated onto different facets to improve the charge separation and utilization efficiency. With the assistance of various kinds of modern spectroscopic studies and theoretical calculations, we try to deeply understand the mechanism of the charge separation between different facets and the kinetics of the photogenerated charges transferring. This project will give great insight into the fundamental mechanisms of charge separation and will show a strategy for developing high efficient photocatalyst systems.

英文关键词： photocatalysis;exposed facet;charge separation;cocatalyst;single crystal