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.

该研究项目研究了界面结构和动力学的各个方面，这些方面控制了水溶液中氮和硫氧化物的异质氧化和还原。在分析和表面化学计划的支持下，Case Western Reserve University化学系的Daniel Scherson教授使用光学技术，可以直接探测金属溶剂接口处的化学过程，包括共振和表面增强的Raman光谱，Ultraviolet可见的可见性反射率谱图，X射线吸收方法，X-RAY吸收方法和第二代。研究了小氮和硫的结合和反应性，这些氮和硫与有序的金属表面和金属表面的有序金属表面的结合和反应性研究了通过过渡金属大环化合物的修饰。该项目的一个重要作用是制定在亚微秒尺度上这些测量中实现时间分辨率的策略。从该项目获得的信息可以提高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涵盖了各种各样的学科，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和氧化硫化合物中化学键形成和分离的基本见解。