MRI: Acquisition of an Advanced Integrated Environmental X-ray Photoelectron Spectroscopy/Optical Spectroscopy Instrument for Simultaneous Surface, Bulk and Gas/Liquid Phase

MRI：购置先进的集成环境 X 射线光电子能谱/光学能谱仪器，可同时进行表面、体相和气/液相分析

• 批准号: 1726841
• 负责人: Israel Wachs
• 金额: $ 71.26万
• 依托单位: Lehigh University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2017
• 资助国家: 美国
• 起止时间: 2017-09-15 至 2020-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1726841&HistoricalAwards=false
• 关键词: MRI; Acquisition; Advanced; Integrated; Environmental

Advanced functional materials possess unique surfaces and interfaces that find widespread use, such as solar energy storage, biofuel production, water treatment, and medicine. Successful applications require detailed information about the surfaces and interfaces of these materials in different environmental conditions. The proposed Environmental X-ray Photoelectron Spectrometer (E-XPS) for surface analysis overcomes the deficiency of traditional instrument that must operate under ultra-high vacuum pressures by providing uncompromised operation at near ambient pressures in reactive environments over a wide temperature range (-100 to 1100 degrees Farenheit). The proposed research activities have the potential to advance the fundamental science and use of advanced functional materials for these numerous applications. The E-XPS will enhance interdisciplinary research, training and education of undergraduate, graduate, and postdoctoral researchers at Lehigh University. As a user facility, the unique instrument will enhance regional academic, governmental and industrial research collaborations. Four broad areas are the focus of the proposed research: heterogeneous catalysts and sorbents; photonics and photoelectron-chemistry; surface tribology and multifunctional materials; and biomolecules in their natural environments at surfaces/interfaces. For catalysis, the projects include rational design of catalysts for hydrogen manufacture with non-toxic earth-abundant elements and design of model catalysts for conversion of inexpensive and abundant methane (natural gas) to value-added ethane and ethylene. For sorbents, the focus is on template-mediated multiscale structuring of hierarchically porous carbon membranes. Tribochemical properties of high performance coatings for aerospace applications. Ultralow wear polymer nanocomposites and nonporous materials synthesized at high pressures will also be probed. Surface chemical and electronic properties of various semiconducting materials, such as dilute-As GaNAs alloys as well as chalcogenide glasses, under atmospheric conditions, will be analyzed to understand the underlying oxidation mechanism and kinetics. Finally, cell/substrate interfacial layers in the presence of water to analyze scaffolds and cells under near-native live environments will be analyzed.

先进的功能材料具有独特的表面和界面，可找到广泛使用，例如太阳能存储，生物燃料生产，水处理和药物。成功的应用需要在不同环境条件下这些材料的表面和接口的详细信息。提议的环境X射线光电子光谱仪（E-XPS）用于表面分析，通过在宽温度范围内在反应性环境中提供不妥协的操作（-100至1100度farenheit）。拟议的研究活动有可能推进基础科学，并在这些众多应用中使用先进的功能材料。 E-XP将增强Lehigh University的本科，研究生和博士后研究人员的跨学科研究，培训和教育。作为用户设施，独特的工具将增强区域学术，政府和工业研究合作。拟议研究的重点是四个广泛的领域：异质催化剂和吸附剂；光子学和光电子化学；表面摩擦学和多功能材料；以及在其自然环境中的生物分子在表面/界面上。为了催化，这些项目包括具有无毒地球元素的催化剂的合理设计以及模型催化剂的设计，用于将廉价和丰富的甲烷（天然气）转化为增值乙烷和乙烯。 对于吸附剂，重点是模板介导的层次多孔碳膜的多尺度结构。航空航天应用高性能涂料的介绍性能。还将探测到高压下合成的超大磨损聚合物纳米复合材料和非孔材料。将分析各种半导体材料的表面化学和电子性能，例如稀释剂Ganas合金以及在大气条件下的葡萄干剂玻璃，以了解潜在的氧化机制和动力学。 最后，将分析在水存在下的细胞/底物界面层，以分析接近本地的活环境下的支架和细胞。