Raman Spectroscopy and Electrochemical Reactivity of Carbon Surfaces

本研究项目在分析和表面化学计划的支持下，重点研究碳表面非均相电子转移反应的基本原理。麦克里里教授和他在俄亥俄州立大学的学生将使用表面光谱方法，特别是拉曼光谱方法高度表征的碳表面，来制备具有已知结构特性的化学修饰表面。这样做的目的是能够控制在这些表面上发生的电子转移的速度，以增强或抑制特定的反应。这项工作与广泛的技术相关，包括电化学能量转换、电合成和使用表面活性碳的应用。碳电极用于不同的过程，包括电池和燃料电池的能量转换、材料生产和腐蚀。尽管碳电极在经济上很重要，但它们的电子转移性能并不容易控制。这在一定程度上是由于对碳的表面结构和化学缺乏分子水平的了解。麦克里里博士和他在俄亥俄州立大学的学生使用的碳电极已经被广泛用于研究电子转移反应。通过改变碳表面的化学性质，可以改变电子转移反应。这项工作旨在建立对表面结构和电子转移反应性之间关系的基本理解。这些结果将在许多能源转换技术、电合成和使用表面活性碳的应用中有用。

This research project supported by the Analytical and Surface Chemistry Program, focuses on the study of the fundamental of heterogeneous electron transfer reactions at carbon surfaces. Professor McCreery and his students at The Ohio State University will use carbon surfaces that have been highly characterized by surface spectroscopic methods, especially Raman spectroscopy, to prepare chemically modified surfaces with known structural properties. The aim is to then be able to control rates of electron transfer that occur at these surfaces to either enhance or suppress specific reactions. This work has relevance to a broad range of technologies including electrochemical energy conversion, electrosynthesis, and applications using surface-active carbon.Carbon electrodes are used in diverse processes including energy conversion in batteries and fuel cells, materials production, and corrosion. Despite the economic importance of carbon electrodes their electron transfer properties are not easily controlled. This is in part due to a lack of a molecular level understanding of the surface structure and chemistry of carbon. Dr. McCreery and his students at Ohio State University use carbon electrodes that have been extensively characterized for studies of electron transfer reactions. By changing the chemical nature of the surface of carbon, electron transfer reactions can be altered. This work aims to establish a fundamental understanding of the relationship between surface structure and electron transfer reactivity. These results will be useful in numerous energy conversion technologies, electrosynthesis, and applications using surface-active carbon.