Environmental Interfacial Chemistry of Dynamic Natural and Engineered Nanoparticles

动态天然和工程纳米粒子的环境界面化学

• 批准号: 1214090
• 负责人: Young-Shin Jun
• 金额: $ 38.2万
• 依托单位: Washington University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2012
• 资助国家: 美国
• 起止时间: 2012-09-01 至 2016-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1214090&HistoricalAwards=false
• 关键词: Environmental; Interfacial; Chemistry; Dynamic; Natural

The Environmental Chemical Sciences Program in the Chemistry Division at the National Science Foundation supports the research of Professor Young-Shin Jun at Washington University who will investigate important nucleation processes at complex environmental interfaces. Through both in situ real-time and ex situ observations, the investigator will articulate the transformation of hematite and cerium oxide nanophases due to the presence of ferric ions. The nanoparticle-nanoparticle and nanoparticle-mineral surface relationships will be investigated with and without natural organic matter coatings. The project's reaction system will be both novel and advantageous in elucidating crucial information about the physical and chemical evolution of environmental and engineered NPs and biofilm in natural and engineered aquatic systems, such as wastewater treatment plants. In addition, transport studies and effluent analysis will allow connecting the degree of transverse mixing of the nanoparticles-humic acid-contaminant system in simulated groundwater and wastewater with the rate of system aggregation. In this project, Professor Jun will develop an educational kit for teaching water quality concepts with support from Washington University's Science Outreach Office and collaboration with teachers from local K-12 schools in Missouri. Through collaboration with the Students and Teachers as Research Scientists program (STARS), the Research Experiences for Undergraduates (REU) Program at Washington University, and the Undergraduate Research Office at Washington University, the investigator will recruit high school and undergraduate students for early involvement in scientific research projects, cultivating their creativity and curiosity via a project-based approach.

美国国家科学基金会化学部的环境化学科学计划支持华盛顿大学的Young-Shin Jun教授的研究，该研究将研究复杂的环境界面的重要成核过程。通过现场和原位观测，研究人员将由于存在铁离子而阐明赤铁矿和氧化岩纳米相的转化。纳米颗粒纳米颗粒和纳米粒子阵线表面关系将在有和没有天然有机物涂层的情况下进行研究。该项目的反应系统将在阐明有关自然和工程水生系统（例如废水处理厂）中环境和工程NP和生物膜的物理和化学演化的关键信息方面具有新颖而有利的。此外，运输研究和废水分析将允许连接模拟地下水和废水中纳米颗粒 - 荷氨酸 - 抗抑制系统的横向混合程度与系统聚集速率。在这个项目中，Jun教授将在华盛顿大学的科学外展办公室的支持下开发一个教育套件，以教授水质概念，并与密苏里州当地K-12学校的老师合作。通过与学生和教师作为研究科学家计划（Stars）的合作，华盛顿大学的本科生（REU）计划的研究经验以及华盛顿大学的本科研究办公室，研究人员将招募高中和本科生，以早期参与科学研究项目，从而通过基于项目的方法来培养其创造力和好处。