The Electronic Structure and Dynamics of Solvated Electrons at the Solid-vacuum Interface

固-真空界面溶剂化电子的电子结构和动力学

• 批准号: 0650756
• 负责人: Hrvoje Petek
• 金额: $ 46.2万
• 依托单位: University of Pittsburgh
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2007
• 资助国家: 美国
• 起止时间: 2007-08-01 至 2011-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0650756&HistoricalAwards=false
• 关键词: Electronic; Structure; Dynamics; Solvated; Electrons

This research project, under the direction of Professor Hrvoje Petek of the Department of Physics at the University of Pittsburgh, addresses the dynamics of electron transfer at the titanium oxide/water interface. Probing the two dimensional solvated electron state at the well characterized surface using two photon photoelectron spectroscopy, Professor Petek and his coworkers are examining the femtosecond dynamics of charge transfer involving this transient state. This research project is supported by the Analytical and Surface Chemistry Program, and will provide fundamental information for the deeper understanding of photocatalysis and solar electrochemical cells. By examining the ultra fast dynamics of electron transfer at the water/oxide interface, Professor Petek and his coworkers at the University of Pittsburgh are learning about the fundamental steps in photocatalytic processes. Using two photon photoelectron spectroscopic probes, this work provides basic information about the lifetimes and transfer mechanisms for charge transfer at illuminated oxide electrode surfaces. This information is useful in the design and construction of photocatalytic processes and solar electrochemical cells.

该研究项目在匹兹堡大学物理系Hrvoje Petek教授的指导下，研究了氧化钛/水界面的电子转移动力学。 使用双光子光电子能谱法在表征良好的表面上探测二维溶剂化电子态，Petek教授和他的同事正在研究涉及这种瞬态的电荷转移的飞秒动力学。 该研究项目由分析和表面化学计划支持，将为更深入地了解太阳能电池和太阳能电化学电池提供基础信息。通过研究水/氧化物界面电子转移的超快动力学，匹兹堡大学的Petek教授和他的同事正在了解光催化过程的基本步骤。 使用双光子光电子能谱探针，这项工作提供了基本信息的寿命和转移机制的电荷转移在照明氧化物电极表面。 这些信息在光催化过程和太阳能电化学电池的设计和构造中是有用的。