MRI-R2: Acquisition of an X-ray Powder Diffractometer

MRI-R2：X 射线粉末衍射仪的采集

• 批准号: 0959546
• 负责人: Sarah Stoll
• 金额: $ 19.75万
• 依托单位: Georgetown University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2010
• 资助国家: 美国
• 起止时间: 2010-01-01 至 2012-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0959546&HistoricalAwards=false
• 关键词: MRI; R2; Acquisition; ray; Powder

This award is funded under the American Recovery and Reinvestment Act of 2009 (Public Law 111-5).With this award from the Major Research Instrumentation (MRI) program Professor Sarah L. Stoll and colleagues from the Department of Chemistry at Georgetown University will acquire a powder X-ray diffractometer for the characterization of materials and nanostructured materials. The instrument will be used to support research activities such as: 1) study of lanthanide chalcogenides for use in magnetic conductors; 2) analysis of clay minerals in soil samples; 3) coordination polymers and framework materials; 4) template directed crystal growth; 5) shape and size controlled Pt based bimetallic nanoparticles for fuel cell applications; 6) charge transfer nanocrystals; and 7) self assembled fibrillar networks.An X-ray diffractometer allows accurate and precise measurements of the full three dimensional structure of a molecule, including bond distances and angles, and provides accurate information about the spatial arrangement of a molecule relative to neighboring molecules. A powder diffractometer allows diffraction studies in powdered crystalline materials. The data provide information on particle sizes, phase identification and purity analysis. The studies described here will impact a number of areas, including chemistry and materials chemistry. This instrument will be an integral part of teaching as well as research.

该奖项是根据 2009 年《美国复苏和再投资法案》（公法 111-5）提供资金的。通过主要研究仪器 (MRI) 项目的这一奖项，乔治城大学化学系的 Sarah L. Stoll 教授及其同事将获得用于表征材料和纳米结构材料的粉末 X 射线衍射仪。该仪器将用于支持研究活动，例如：1）研究用于磁导体的稀土硫族化物； 2）土壤样品中粘土矿物的分析； 3）配位聚合物和骨架材料； 4) 模板定向晶体生长； 5）用于燃料电池应用的形状和尺寸受控的Pt基双金属纳米颗粒； 6) 电荷转移纳米晶； 7) 自组装原纤维网络。X射线衍射仪可以精确测量分子的完整三维结构，包括键距和角度，并提供有关分子相对于相邻分子的空间排列的准确信息。粉末衍射仪可以对粉末晶体材料进行衍射研究。这些数据提供有关粒径、物相识别和纯度分析的信息。这里描述的研究将影响许多领域，包括化学和材料化学。该仪器将成为教学和研究不可或缺的一部分。