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，介绍了用于在燃料电池环境下用于电氧化甲醇和甲醇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安德烈·威克斯基（Andrzej Wieckowski）的实验室进行，研究自发沉积在PT和AU基板上的OS或RU的纳米群岛。 STM和电化学方法用于检查这些结构，以及对结构的电极XPS检查。 Co-P.I进行的计算。北德克萨斯大学的Paul Bagus用于解释用于探测这些系统的详细核心水平光谱。 Bochum中与C. Woell的合作提供了对这些纳米结构材料的高分辨率基于同步加速器的研究。从这些研究中获得的信息可能会在改进的燃料电池催化剂的设计中找到适用性。使用实验和计算研究，伊利诺伊州的Wieckowski以及北德克萨斯大学的Bagus的结合，正在研究一系列纳米群岛过渡金属催化系统的结构与反应性之间的相关性。这些由PT或AU底物沉积的OS或RU组成的催化剂显示出有效的甲醇燃料电池应用电氧化催化剂的希望。从这些基本研究中获得的信息可能有助于设计改进的燃料电池系统。