Structure and Reactivity of Metal and Inorganic Monolayers on Electrode Surfaces

本课题为分析与表面化学计划项目，主要研究电催化和电极修饰的基础研究。Gewirth教授和他在伊利诺伊大学厄巴纳香槟分校的同事们研究了在欠电位沉积修饰的表面上，氧、过氧化物和硝酸盐的电还原过程中的结构-反应性关系。扫描探针显微镜，表面x射线方法和振动光谱方法的组合被用来研究这些系统。此外，还对新型吸附无机金属氧酸盐单分子膜的结构进行了探讨。这项工作为与燃料电池和电池技术相关的电催化和电极修饰机制提供了基本的见解。在分析和表面化学项目的支持下，伊利诺伊大学厄巴纳香槟分校的Gewirth教授和他的团队正在研究金属和无机单层电极表面的结构和反应性。采用光谱学和显微相结合的方法，对金属修饰电极的结构和反应活性进行了一系列小分子电还原反应的研究。此外，还研究了多金属氧酸盐单层膜的结构。这项工作的结果有助于发展对重要的燃料电池和能量存储技术的理解。

AbstractCHE-0237683Gewirth/IllinoisThis research project, supported in the Analytical and Surface Chemistry Program, focuses on the fundamental study of electrocatalysis and electrode modification. Work carried out by Professor Gewirth and his colleagues at the University of Illinois-Urbana Champaign examines structure-reactivity correlations in the electroreduction of oxygen, peroxide, and nitrate species at underpotential deposition modified surfaces. A combination of scanning probe microscopy, surface x-ray methods, and vibrational spectroscopy methods are being used to investigate these systems. In addition, the structure of novel adsorbed inorganic oxometallate monolayers are being probed. This work provides fundamental insight into the mechanisms of electrocatalysis and electrode modification relevant to fuel cell and battery technologies. With the support of the Analytical and Surface Chemistry Program, Professor Gewirth and his group at the University of Illinois-Urbana Champaign are examining the structure and reactivity of metal and inorganic monolayer electrode surfaces. Using a combination of spectrosocopic and microscopic methods, the structure and reactivity of metal modified electrodes are examined for a series of small molecule electroreduction reactions. In addition, the structure of polyoxometallate monolayers is studied. The results of this work help to develop an understanding of important fuel cell and energy storage technologies.