Research Initiation Award: Investigation of Chemisorbed Molecules by Scanning Tunnelling Microscopy and Spectroscopy

该项目的目标是建立一个具有扫描隧道光谱能力的刚性、快速扫描隧道显微镜；将其整合到现有的配备有低能电子衍射和俄歇光谱的超高真空蓄积系统中；表征一氧化碳、一氧化氮、氧和氢等吸附物对铂(100)表面的表面拓扑和隧道光谱的影响；研究表面缺陷对不同吸附物在铂表面的吸附和反应的影响，以及石墨负载铂的微晶尺寸对吸附物吸附和反应行为的影响。该项目代表了最近开发的技术在催化中重要的材料和系统中的应用。因此，它具有探索性的一面，使这项工作具有一定的推测性；然而，对理解催化体系的潜在贡献是巨大的。

The objectives of this project are to build a rigid, fast-scanning tunnelling microscope with scanning tunnelling spectroscopy capability; to incorporate this into an existing ultrahigh-vaccumm system equipped with low-energy electron diffraction and Auger spectroscopy; to characterize the effects of adsorbates such as carbon monoxide, nitric oxide, oxygen, and hydrogen on the surface topology and tunnelling spectra of a platinum(100) surface; to study the effects of surface defects on the adsorption, and possibly the reactions, of various adsorbates on platinum surfaces; and to investigate the effects of crystallite size of platinum supported on graphite on the adsorption and reaction behavior of adsorbates. This project represents an application of recently developed techniques to materials and systems important in catalysis. It therefore has an exploratory aspect that makes the work somewhat speculative; potential contributions to understanding of catalytic systems are great, however.