Surface Chemistry of Rocksalt and Spinel 3d Transition Metal Oxides Tailored by Structural and Compositional Methods

内布拉斯加大学林肯分校的Marjorie Langell教授由分析和表面化学项目资助，研究过渡金属氧化物表面的吸附物。 Langell教授建议利用特征良好的阶梯表面来扩展她以前的工作。 探讨了阳离子价态和配位对表面组成和反应活性的影响。 氙和水吸附在阶梯状NiO表面上进行探测，例如，利用高分辨率电子能量损失，X射线光电子能谱，俄歇电子和热脱附光谱。 氧化物是重要的工业材料，其化学性质由缺陷的存在决定。例如，铁氧化物在氯代烃的修复和环境修复中作为催化剂是重要的。 这是一个挑战，以准备良好定义的缺陷属性，以关联电子和几何结构与反应性。 了解这些表面反应将有助于开发更有效和环境友好的工业催化过程。

Professor Marjorie Langell of the University of Nebraska-Lincoln is funded by the Analytical and Surface Chemistry Program to study adsorbates on transition metal oxide surfaces. Professor Langell proposes to utilize well-characterized stepped surfaces to extend her previous work. The effects of cation valence and coordination on surface composition and reactivity will be probed. Xenon and water adsorption on stepped NiO surfaces are probed, for example, utilizing high resolution electron energy loss, x-ray photoemission, auger electron and thermal desorption spectroscopy. Oxides are important industrial materials whose chemical properties are governed by the presence of defects. For example, iron oxides are important as catalysts in remediation of chlorocarbons and remediation in the environment. It is a challenge to prepare well-defined defect properties in order to correlate electronic and geometric structure with reactivity. Understanding these surface reactions will aid in the development of more efficient and environmentally friendly catalysis for industrial processes.