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

该项目的目标是建立一个刚性， 具有扫描隧道效应的快速扫描隧道显微镜 光谱分析能力;将其纳入现有的 配备低能电子衍射的超高真空系统 和俄歇光谱;表征吸附物的影响， 一氧化碳、一氧化氮、氧气和氢气 铂（100）表面的拓扑结构和隧道谱;研究 表面缺陷对吸附的影响，并可能 铂表面上各种吸附物的反应;以及 研究了负载铂的晶粒尺寸对催化剂性能的影响。 石墨对吸附物的吸附和反应行为的影响。 该项目代表了最近开发的 技术到催化中重要的材料和系统。 它 因此具有探索性的一面， 推测性的;对理解催化的潜在贡献 系统是伟大的。

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.