CAREER: Exploring Particle Size Dependent Surface Chemistry on Supported Metal Nanoparticles

这项职业奖由分析和表面化学计划提供，支持南卡罗来纳大学哥伦比亚分校的Donna Chen教授的研究和教育计划。她的研究致力于在原子水平上研究金属在氧化物表面的化学。利用热脱附谱、X射线光电子能谱和扫描隧道显微镜研究了沉积在二氧化钛单晶表面的银和铂纳米颗粒的生长和表面化学。乙烯氧化成环氧乙烷和NO与CO的还原作为探针反应将被用来研究这些金属在氧化物系统上的详细表面化学。这种方法也将扩展到双金属纳米颗粒。本科生和研究生研究参与者在这个研究项目中的整合形成了这个职业奖项教育计划的重点。在本科生课程中采用基于网络的辅导和同伴学习小组的互动学习，并将研究问题解决方法纳入理工科课程。应用现代超高真空表面科学工具对氧化物表面金属纳米颗粒的表面化学进行微观理解，构成了这一职业奖的重点。分析和表面化学计划支持南卡罗来纳大学Donna Chen教授的研究和教育活动。扫描隧道显微镜和电子能谱是研究银和铂颗粒与氧化物表面相互作用的主要工具。将本科生和研究生的研究与课程相结合，以及互动学习方法的使用，构成了这一职业奖教育方面的重点。

This Career Award, provided by the Analytical and Surface Chemistry Program, supports the research and educational program of Professor Donna Chen of the University of South Carolina at Columbia. Her research addresses the chemistry of metal on oxide surfaces at the atomic level. Using thermal desorption spectroscopy in combination with X-ray photoelectron spectroscopy and scanning tunneling microscopy, the growth and surface chemistry of Ag and Pt nanoparticles deposited on titanium dioxide single crystal surfaces are being examined. The oxidation of ethylene to ethylene oxide, and the reduction of NO with CO will be used as probe reactions to examine the detailed surface chemistry of these metal on oxide systems. This approach will be extended to bimetallic nanoparticles as well. The integration of undergraduate and graduate research participants in this research program forms the focus of the educational plan in this Career Award. Interactive learning using web based tutorials and peer study groups are being implemented in the undergraduate curriculum, and the integration of research problem solving approaches in the courses of the P.I. is being implemented. The application of modern ultra-high vacuum surface science tools to the microscopic understanding of the surface chemistry of metallic nanoparticles on oxide surfaces forms the focus of this Career Award. The Analytical and Surface Chemistry Program supports the research and educational activities of Professor Donna Chen at the University of South Carolina. Scanning tunneling microscopy and electron spectroscopy are the major tools applied to the interactions of Ag and Pt particles with oxide surfaces. Integrating undergraduate and graduate student research with the curriculum, and the use of interactive learning methods form the focus of the educational aspects of this Career Award.