NIRT: Metal Ion Complexation by Dendritic Nanoscale Ligands: Fundamental Investigations and Applications to Water Purification

NIRT：树枝状纳米级配体的金属离子络合：水净化的基础研究和应用

• 批准号: 0506951
• 负责人: Mamadou Diallo
• 金额: $ 110万
• 依托单位: Howard University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2005
• 资助国家: 美国
• 起止时间: 2005-08-01 至 2012-10-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0506951&HistoricalAwards=false
• 关键词: NIRT; Metal; Ion; Complexation; Dendritic

AbstractProposal Title: NIRT: Metal Ion Complexation by Dendritic Nanoscale Ligands: Fundamental Investigations and Applications to Water PurificationProposal Number: CTS-0506951Principal Investigator: Mamadou DialloInstitution: Howard UniversityThis proposal was received in response to Nanoscale Science and Engineering initiative, NSF 04-043, category NIRT. The fundamental mechanisms by which nanoscale ligandssuch as dendrimers bind metal ions will be elucidated through a combination of techniques: dendrimer synthesis and characterization, bench scale measurements of proton and metal ion binding, spectroscopic measurements and analysis, and multiscale modeling. In addition to advancing the fundamental science of metal ion chelation by nanoscale ligands, this research could provide insight and guidance to scientists and engineers interested in the use of dendrimers as high capacity chelating agents for industrial separations and templates for the synthesis of metal-bearing nanostructures with electronic, magnetic, optical, and catalytic activity. Two water purification platforms will be emphasized in this project: dendrimer-enhanced filtration systems and dendrimer-based treatment units. The dendrimer enhanced ultrafiltration (DEUF) process combines water-soluble functionalized dendritic polymers with the well-established water purification technology of ultrafiltration. A key objective of this project is to optimize DEUF for the recovery of metal ions from the membrane concentrates of water treatment and desalination plants, thus providing water utilities in the US with more efficient and cost-effective means of treating the problem of brine disposal. Another goal of this project is to explore the use of iron-dendrimer complexes as functional materials for a new generation of membrane-based reactors for water purification. In terms of the broader impacts, this project could provide the water industry with a versatile technology for purifying water contaminated by redox active metal ions such chromium. Similarly, the development of dendrimer-based units that selectively remove copper and lead from water would provide municipalities with novel means of treating contaminants resulting from the dissolution of water delivery pipes. This project will also provide training opportunities in interdisciplinary research for postdoctoral, graduate and undergraduate students at Howard University, the University of California at Berkeley, and the California Institute of Technology.

摘要提案标题：NIRT：树枝状纳米级配体的金属离子络合：水净化的基础研究和应用建议编号：CTS-0506951主要研究者：Mamadou DialloInstitution：霍华德大学本建议是响应纳米级科学和工程倡议，NSF 04-043，类别NIRT。 纳米ligandssuch树枝状聚合物绑定金属离子的基本机制将阐明通过技术的组合：树枝状聚合物的合成和表征，质子和金属离子结合的实验室规模的测量，光谱测量和分析，和多尺度建模。 除了通过纳米配体推进金属离子螯合的基础科学外，这项研究还可以为有兴趣使用树枝状聚合物作为工业分离的高容量螯合剂和合成具有电子，磁性，光学和催化活性的含金属纳米结构的模板的科学家和工程师提供见解和指导。 该项目将重点关注两个水净化平台：树枝状聚合物增强过滤系统和树枝状聚合物处理单元。树枝状聚合物增强超滤（DEUF）工艺将水溶性官能化树枝状聚合物与成熟的超滤水净化技术相结合。 该项目的一个关键目标是优化DEUF，以从水处理和海水淡化厂的膜浓缩物中回收金属离子，从而为美国的水务公司提供更有效和更具成本效益的处理盐水处理问题的方法。 该项目的另一个目标是探索使用铁-树枝状聚合物复合物作为新一代水净化膜基反应器的功能材料。 就更广泛的影响而言，该项目可以为水行业提供一种多功能技术，用于净化被氧化还原活性金属离子（如铬）污染的水。类似地，开发基于树枝状聚合物的单元，选择性地从水中去除铜和铅，将为市政当局提供处理由输水管道溶解产生的污染物的新方法。 该项目还将为霍华德大学、加州大学伯克利分校和加州理工学院的博士后、研究生和本科生提供跨学科研究的培训机会。