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

本课题的目标是建立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低能电子衍射和俄歇光谱的超高真空系统中；表征吸附物如一氧化碳、一氧化氮、氧和氢对铂（100）表面拓扑结构和隧穿光谱的影响；研究表面缺陷对各种吸附剂在铂表面的吸附和可能的反应的影响；并研究了石墨负载铂的晶粒尺寸对吸附剂吸附和反应行为的影响。这个项目代表了最近发展的技术在催化中重要的材料和系统的应用。因此，它有一个探索性的方面，使工作有点投机；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.