Nanoparticle-Surface Interactions in Aqueous Environments

水环境中纳米颗粒-表面相互作用

• 批准号: 1112335
• 负责人: Howard Fairbrother
• 金额: $ 46.94万
• 依托单位: Johns Hopkins University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2011
• 资助国家: 美国
• 起止时间: 2011-06-15 至 2015-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1112335&HistoricalAwards=false
• 关键词: Nanoparticle; Surface; Interactions; Aqueous; Environments

The Environmental Chemical Sciences (ECS) program of the Division of Chemistry will support the research program of Prof. Howard Fairbrother of Johns Hopkins University. Prof. Fairbrother and his research group will study the surface interactions that regulate the behavior of nanoparticles in aqueous environments by measuring particle-surface interactions of carbon nanotubes and gold nanoparticles in model environmental systems. The study will make use of state of the art instrumentation to study these interactions including atomic force microscopy (AFM), transmission electron microscopy (TEM) and UV-VIS absorption spectroscopy. Surface properties will be assayed using zeta potential measurements, potentiometric titrations and chemical derivatization techniques in conjunction with X-ray photoelectron spectroscopy. The study will lead to a significantly improved fundamental understanding of nanoparticle behavior in aquatic environments, which will enable the rational synthesis of safe-by-design nanoparticles. The development of safe materials, including nanoparticles is a priority area for NSF and the nation. The study will provide excellent training opportunities to undergraduate and graduate students in an area of research of great societal importance.

化学系的环境化学科学（ECS）计划将支持约翰霍普金斯大学的霍华德费尔布罗夫教授的研究计划。Fairbrother教授和他的研究小组将通过测量模型环境系统中碳纳米管和金纳米颗粒的颗粒-表面相互作用，研究调节纳米颗粒在水性环境中行为的表面相互作用。该研究将利用最先进的仪器来研究这些相互作用，包括原子力显微镜（AFM），透射电子显微镜（TEM）和紫外可见吸收光谱。将使用zeta电位测量、电位滴定和化学衍生化技术结合X射线光电子能谱分析表面特性。该研究将显着提高对纳米颗粒在水环境中行为的基本了解，从而能够合理合成设计安全的纳米颗粒。安全材料的开发，包括纳米粒子是NSF和国家的优先领域。该研究将为本科生和研究生在具有重大社会重要性的研究领域提供绝佳的培训机会。