Fundamental Interactions at the Liquid-Solid Interface: Combined UHV-Electrochemical-Optical Studies at Clean and Adsorbate Modified Electrode Surfaces

这个研究项目，在分析和表面化学计划的支持下，解决了氧化物和氢氧化物膜在水溶液中的反应性金属的生长的基本问题。 北德克萨斯大学的Kelber教授将使用超高真空电化学方法和反射吸收UV/维斯光谱的组合来表征铁和镍表面的反应。 X射线光电子能谱将用于组成分析的接口形成的，和基板的结构和组合物上的表面在水溶液中的反应的影响将被探测。 这项研究提供了腐蚀过程的基本理解，环境吸附的地下水中所含的物种，以及缓蚀剂在活性金属表面的作用。 详细了解活性金属和金属氧化物表面与水环境的相互作用对于控制和防止腐蚀非常重要。 在这个项目中进行的研究提供了结构和动力学信息，这将有助于理解这一重要过程。 一种新的方法探测这些接口在原位使用反射吸收UV/维斯光谱正在开发中。 这些研究将增加我们对腐蚀和相关环境重要过程的理解。

This research project, supported in the Analytical and Surface Chemistry Program, addresses fundamental questions of the growth of oxide and hydroxide films on reactive metals in aqueous solutions. Professor Kelber, at the University of North Texas, will use a combination of ultra high vacuum electrochemical methods and reflection absorption UV/VIS spectroscopy to characterize reactions at iron and nickel surfaces. X-ray photoelectron spectroscopy will be used for compositional analysis of the interfaces formed, and the effects of substrate structure and composition on the reactions of the surfaces in aqueous solutions will be probed. This research provides fundamental understanding of the processes of corrosion, environmental adsorption of species contained in groundwater, and the action of corrosion inhibitors at the surfaces of reactive metals. A detailed understanding of the interaction of reactive metal and metal oxide surfaces with aqueous environments is important to controlling and preventing corrosion. The research carried out in this project provides structural and kinetic information which will help to understand this important process. A new method for probing these interfaces in situ using reflection absorption UV/VIS spectroscopy is being developed. These studies will increase our understanding of corrosion and related environmentally important processes.