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项目支持华盛顿大学的Young-Shin Jun教授的研究，他将研究复杂环境界面中的重要成核过程。通过现场实时和非原位观察，研究者将阐明赤铁矿和氧化铈纳米相由于铁离子的存在而发生的转变。纳米颗粒-纳米颗粒和纳米颗粒-矿物表面的关系将研究与天然有机物质涂层和不。该项目的反应系统在阐明自然和工程水生系统（如废水处理厂）中环境和工程NPs和生物膜的物理和化学演变的关键信息方面既新颖又有利。此外，运移研究和流出物分析将允许将模拟地下水和废水中纳米颗粒-腐殖酸污染系统的横向混合程度与系统聚集率联系起来。在这个项目中，Jun教授将在华盛顿大学科学推广办公室的支持下，与密苏里州当地K-12学校的教师合作，开发一套用于教授水质概念的教育工具包。通过与学生和教师作为研究科学家计划（STARS）、华盛顿大学本科生研究经验计划（REU）和华盛顿大学本科生研究办公室的合作，研究者将招募高中生和本科生早期参与科学研究项目，通过基于项目的方法培养他们的创造力和好奇心。