Thermal and Photo-Assisted Reactions on Metal Oxide Particles

这项研究项目得到了分析和表面化学计划的支持，将Grassian教授早期在表面光化学方面的研究工作扩展到氧化物表面领域。在这项为期三年的持续资助期间，将使用从高表面积粉末的红外和光学光谱到单晶样品的电子光谱研究等技术来研究氧化物表面的热和光驱动化学。氧化亚氮与氧化锆表面的相互作用构成了该项目的一个焦点。对大气具有重要意义的小分子与模型矿物气溶胶表面的相互作用也将被探索。这些基础研究的结果将有助于加深对氧化物表面发生的催化和环境过程的理解。光驱动表面反应在各种技术应用中引起了人们的兴趣。例如，氧化亚氮在氧化锆表面的反应在合成纤维前体的环境友好合成中可能是重要的。该项目支持的基础研究解决了表面光化学反应的详细机理，如这一种。此外，还将考察模型矿物气溶胶表面上的小分子反应，这可能应用于我们对大气污染产生的对流层机制的发展理解。

This research project, supported in the Analytical and Surface Chemistry Program, extends Professor Grassian's earlier research work on surface photochemistry into the field of oxide surfaces. During the tenure of this three-year continuing grant, thermal and photo-driven chemistry on oxide surfaces will be examined using techniques ranging from infrared and optical spectroscopy on high surface area powders to electron spectroscopic studies of single crystal samples. The interaction of nitrous oxide with zirconia surfaces forms one focus of the project. The interaction of small molecules of atmospheric importance with model mineral aerosol surfaces will also be explored. Results of these basic studies will be of interest in developing an understanding of catalytic and environmental processes occurring on oxide surfaces. Light-driven surface reactions are of interest in a variety of technical applications. For example, the reaction of nitrous oxide on zirconia surfaces may be of importance in the environmentally benign synthesis of synthetic fiber precursors. The basic research supported in this project addresses the detailed mechanisms of surface photochemical reactions such as this one. In addition, small molecule reactions on model mineral aerosol surfaces will be examined, with possible application in our developing understanding of tropospheric mechanisms of air pollution generation.