CRC: Collaborative Research: Structure-Sorption Relationships In Disordered Iron-oxyhydroxides

CRC：合作研究：无序羟基氧化铁的结构-吸附关系

• 批准号: 0714183
• 负责人: Clare Grey
• 金额: $ 170.5万
• 依托单位: SUNY at Stony Brook
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2007
• 资助国家: 美国
• 起止时间: 2007-09-01 至 2013-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0714183&HistoricalAwards=false
• 关键词: CRC; Collaborative; Research; Structure; Sorption

Clare Grey, John Parise, Brian Phillips, Richard Reeder (Stony Brook University); James Kubicki (Pennsylvania State University); Dane Morgan (University of Wisconsin); and Daniel Strongin (Temple University) are jointly supported to study nanostructured iron oxyhydroxides. Iron oxyhydroxides represent a large class of materials with many, often metastable, phases and polymorphs ranging from crystalline and ordered goethite to nanoparticulate ferrihydrites. These environmentally ubiquitous materials play a key role in the transport of natural substances. Furthermore, they are now being used in remediation efforts to bind pollutants and toxicants such as cadmium, lead and arsenate. This collaborative team will develop and apply new experimental and computational methods for determining bulk and surface structures of these materials in order to solve (1) short- and intermediate-range bulk and surface structures; (2) determine how these change as a function of humidity and pH; (3) develop a systematic link between materials structure and properties such as sorption and reactivity; (4) design materials with optimal sorption capacities. A range of experimental and computational techniques will be used, including x-ray diffraction and pair distribution function analysis, novel NMR approaches, EXAFS, TEM, ATR-IR, AFM, ab-initio electronic structure calculations and molecular dynamics simulations. Many of the x-ray experiments will be conducted at the National Synchrotron Light Source at Brookhaven National Laboratory.This project is funded through the Collaborative Research in Chemistry Program (CRC) and provides collaborative training and research opportunities in chemistry, geochemistry and materials science. High school students and undergraduates will be introduced to environmental chemistry and synchrotron methods at national facilities via real-time video conferencing.

克莱尔·格雷（Clare Gray），约翰·帕里斯（John Parise），布莱恩·菲利普斯（Brian Phillips），理查德·里德（Richard Reeder）（斯托尼·布鲁克大学（Stony Brook University））；詹姆斯·库比基（James Kubicki）（宾夕法尼亚州立大学）；丹恩·摩根（威斯康星大学）；和丹尼尔·斯特朗（Daniel Strongin）（坦普尔大学）共同支持研究纳米结构的氧化铁氧化铁。 羟基氧化物代表了一大类材料，具有许多，通常是亚稳态的，相位，构成晶状体，范围从结晶和订购的石石到纳米含量的铁石。这些无处不在的材料在天然物质的运输中起着关键作用。此外，它们现在正在用于粘合污染物和毒物（例如镉，铅和砷）的修复工作中。该协作团队将开发并应用新的实验和计算方法来确定这些材料的整体和表面结构，以解决（1）短距离和中间范围的体积和表面结构； （2）确定这些变化如何随湿度和pH的函数而变化； （3）在材料结构和属性（例如吸附和反应性）之间建立系统的联系； （4）具有最佳吸附能力的设计材料。将使用一系列实验和计算技术，包括X射线衍射和配对分布函数分析，新型NMR方法，EXAFS，TEM，ATR-IR，AFM，AB-INITIO电子结构计算和分子动力学模拟。许多X射线实验将在布鲁克黑文国家实验室的国家同步加速器光源进行。该项目是通过化学研究计划（CRC）资助的，并提供化学，地球化学和材料科学的合作培训和研究机会。高中生和本科生将通过实时视频会议介绍国家设施的环境化学和同步方法。