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The Electrochemistry of Nitrogen and Sulfur Oxides: In situ Spectroelectrochemical Studies

氮氧化物和硫氧化物的电化学：原位光谱电化学研究

基本信息

批准号：
0316934
负责人：
Daniel Scherson
金额：
$ 42万
依托单位：
Case Western Reserve University
依托单位国家：
美国
项目类别：
Continuing Grant
财政年份：
2003
资助国家：
美国
起止时间：
2003-07-15 至 2006-06-30
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=0316934&HistoricalAwards=false
关键词：
Electrochemistry Nitrogen Sulfur Oxides situ

项目摘要

This research project investigates aspects of interfacial structure and dynamics that control the heterogeneous oxidation and reduction of nitrogen and sulfur oxides and oxyanions in aqueous solution. With the support of the Analytical and Surface Chemistry Program, Professor Daniel Scherson in the Department of Chemistry at Case Western Reserve University, uses optical techniques that enable direct probing of chemical processes at metal-solution interfaces, including resonance and surface enhanced Raman spectroscopies, ultraviolet-visible reflectance spectroscopy, X-ray absorption methods, and second harmonic generation. The binding and reactivity of small nitrogen and sulfur containing molecules to ordered metal surfaces and metal surfaces modified by transition metal macrocyclic compounds are studied. An important thrust of the project involves the development of strategies for achieving temporal resolution in these measurements on the sub-microsecond scale. Information obtained from this project improves our understanding of chemical reactions involving molecular and ionic forms of nitrogen and sulfur oxides. Interest in this class of compounds spans a wide variety of disciplines, ranging from atmospheric sciences and toxicology to catalysts and neurobiology. Fundamental insight into the formation and dissociation of chemical bonds in nitrogen oxide and sulfur oxide compounds is obtained from these studies.

本研究项目研究了控制水溶液中氮、硫氧化物和氧离子的非均相氧化和还原的界面结构和动力学方面。在分析和表面化学项目的支持下，凯斯西储大学化学系的Daniel Scherson教授使用光学技术，可以直接探测金属溶液界面的化学过程，包括共振和表面增强拉曼光谱、紫外-可见反射光谱、x射线吸收方法和二次谐波产生。研究了含氮、含硫小分子与有序金属表面和过渡金属大环修饰的金属表面的结合和反应性。该项目的一个重要重点是发展在亚微秒尺度上实现这些测量的时间分辨率的策略。从这个项目中获得的信息提高了我们对涉及氮和硫氧化物分子和离子形式的化学反应的理解。对这类化合物的兴趣跨越了各种学科，从大气科学和毒理学到催化剂和神经生物学。从这些研究中获得了对氮氧化物和硫氧化物化合物化学键形成和解离的基本见解。