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Metal-Metal and Metal-Molecule Interactions on Nanoisland Covered Single Crystal Electrodes

纳米岛覆盖单晶电极上的金属-金属和金属-分子相互作用

基本信息

批准号：
0349999
负责人：
Andrzej Wieckowski
金额：
$ 52.56万
依托单位：
University of Illinois at Urbana-Champaign
依托单位国家：
美国
项目类别：
Continuing Grant
财政年份：
2004
资助国家：
美国
起止时间：
2004-06-01 至 2007-05-31
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=0349999&HistoricalAwards=false
关键词：
Metal Molecule Interactions Nanoisland Covered

项目摘要

This project, funded by the Analytical and Surface Chemistry Program, addresses the correlation between the structure and reactivity of binary and ternary transition metal catalysts used for electrooxidation of methanol and formic acid in fuel cell contexts. The work, carried out primarily in the laboratories of Andrzej Wieckowski at the University of Illinois, examines spontaneously deposited nanoislands of Os or Ru deposited on Pt and Au substrates. STM and electrochemical methods are used to examine these structures, as well as emersed electrode XPS examination of the structures. Calculations carried out by co-P.I. Paul Bagus at the University of North Texas are used to help interpret the detailed core level spectroscopy used to probe these systems. Collaboration with C. Woell in Bochum provides high resolution synchrotron based XPS studies of these nano-structured materials. Information obtained from these studies may find applicability in the design of improved fuel cell catalysts.Using a combination of experimental and calculational studies, Wieckowski at Illinois, and Bagus at the University of North Texas, are examining the correlation between structure and reactivity of a series of nanoisland transition metal catalyst systems. These catalysts, consisting of Os or Ru deposited on Pt or Au substrates, show promise as effective electrooxidation catalysts in methanol fuel cell applications. Information obtained from these fundamental studies may aid in the design of improved fuel cell systems.

该项目由分析和表面化学计划资助，解决了用于燃料电池环境中甲醇和甲酸电氧化的二元和三元过渡金属催化剂的结构和反应性之间的相关性。这项工作主要在伊利诺伊大学的Andrzej Wieckowski实验室进行，研究了沉积在Pt和Au衬底上的Os或Ru的自发沉积纳米岛。 STM和电化学方法被用来检查这些结构，以及暴露电极XPS检查的结构。由co-P.I.进行计算。北德克萨斯大学的Paul Bagus被用来帮助解释用于探测这些系统的详细的核心水平光谱。与C的合作。波鸿的Woell提供了这些纳米结构材料的高分辨率同步加速器XPS研究。从这些研究中获得的信息可能会发现在改进的燃料电池catalysts.Using实验和计算研究相结合的设计适用性，Wieckowski在伊利诺伊州，和Bagus在北德克萨斯大学，正在研究一系列的纳米岛过渡金属催化剂系统的结构和反应性之间的相关性。这些催化剂，由沉积在Pt或Au衬底上的Os或Ru组成，在甲醇燃料电池应用中显示出作为有效的电氧化催化剂的前景。从这些基础研究中获得的信息可能有助于改进燃料电池系统的设计。