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

这项研究项目得到了分析和表面化学计划的支持，解决了水溶液中活性金属上氧化物和氢氧化物薄膜生长的基本问题。北得克萨斯大学的Kelber教授将使用超高真空电化学方法和反射吸收UV/Vis光谱相结合的方法来表征铁和镍表面的反应。X射线光电子能谱将用于形成界面的成分分析，并将探索衬底结构和组成对表面在水溶液中反应的影响。这项研究提供了对腐蚀过程、地下水中所含物种在环境中的吸附以及缓蚀剂在活性金属表面的作用的基本了解。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。本项目开展的研究提供了有助于理解这一重要过程的结构和动力学信息。一种利用反射吸收UV/Vis光谱原位探测这些界面的新方法正在开发中。这些研究将增加我们对腐蚀和相关环境重要过程的了解。

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.