Structure and Chemistry of Alloy and Oxide Films at Bimetallic Pt Surfaces

利哈伊大学的Bruce E.Koel教授在化学系化学催化计划的支持下，在铂表面制备双金属锗和锡合金，如锡/铂(111)和锗/铂(111)，并在这些合金上形成氧化膜。将使用一套复杂的表面分析光谱和显微技术来表征具有原子尺度分辨率的合金，并提供关于它们的结构、组成和催化性能的信息。将建立这些体系作为新催化材料发展所需的结构-性质关系。金属基多相催化剂大多为双金属或多金属体系。这项研究将有助于更好地理解双金属铂合金表面的结构和组成，以及氧化物-合金界面如何影响这些材料的化学和催化作用。研究结果将为开发具有更高选择性的新型催化剂和合理设计具有更高功能的纳米材料提供参考。参与这项研究的研究生、本科生和博士后助理将接受化学催化和表面化学方面的优秀培训。

Professor Bruce E. Koel of Lehigh University is supported by the Chemical Catalysis Program in the Division of Chemistry to prepare bimetallic germanium and tin alloys on platinum surfaces, such as Sn/Pt(111) and Ge/Pt(111), and to form oxide films on these alloys. A sophisticated suite of surface analytical spectroscopy and microscopy techniques will be employed to characterize the alloys with atomic scale resolution and provide information on their structure, composition, and catalytic properties. Structure-property relationships of these systems, required for their development as new catalytic materials, will be established. The majority of metal-based heterogeneous catalysts are bimetallic or multimetallic systems. The proposed research will lead to a better understanding of how the structure and composition of bimetallic Pt alloy surfaces, and oxide-alloy interfaces affect the chemistry and catalysis of these materials. The results will inform the development of new catalysts with higher selectivity and the rational design of nanoscale materials with improved functionality. Graduate and undergraduate students and postdoctoral associates involved in this research will receive excellent training in chemical catalysis and surface chemistry.