LEAPS-MPS: Production of Solvated Electrons by Atmospheric Pressure Plasma Jets

LEAPS-MPS：通过大气压等离子体射流产生溶剂化电子

• 批准号: 2213526
• 负责人: Adam Light
• 金额: $ 24.94万
• 依托单位: Colorado College
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2022
• 资助国家: 美国
• 起止时间: 2022-08-01 至 2024-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2213526&HistoricalAwards=false
• 关键词: LEAPS; MPS; Production; Solvated; Electrons

This award is funded in whole or in part under the American Rescue Plan Act of 2021 (Public Law 117-2). Contamination of groundwater by poly-fluoroalkyl substances (PFAS) is increasingly recognized as a major environmental issue. Sometimes called “forever chemicals,” these compounds bioaccumulate, can cause adverse health outcomes, and are difficult to break down. Plasma technologies offer promising avenues to remediation, especially via the production of free electrons dissolved in water (“solvated electrons”). This award supports Dr. Light at Colorado College in a project to study the production of solvated electrons by atmospheric pressure plasma. The award will also provide the resources to involve a significant number of undergraduates from minoritized backgrounds in cutting edge research through a “research incubator” course and funded summer research positions. The overarching goal of this research program in the next five to ten years is to understand the physics and chemistry involved in using low-temperature plasma (LTP) to break apart and extract recalcitrant contaminants from water. The project seeks to measure the time-dependent concentration of solvated electrons at the water’s surface by adapting an existing spectroscopic technique. Supercontinuum transient absorption spectroscopy is a well-established method for studying time-resolved chemical and physical processes, but it has not yet been applied to LTP or to the plasma/water interface. The development of this diagnostic would open new avenues for time-resolved studies of LTP and of the chemistry they drive. The proposed study will also illuminate the landscape of atmospheric pressure plasma jets as sources for solvated electrons, yield information about what plasma parameters are important to the process, and guide efforts to optimize plasma sources for remediation applications. This award funds a pilot “research incubator” course designed for first- and second-year students from underrepresented backgrounds in order to lower the entry barrier into undergraduate research positions. The course will run twice during the grant period, with a cap of ten students each time. The award also establishes six dedicated research stipends for low-income, minoritized, and first-generation college students.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

该奖项是根据2021年《美国救援计划法》（公法117-2）全部或部分资助的。多氟烷基物质（PFA）对地下水的污染越来越被认为是主要环境问题。这些化合物有时被称为“永远的化学物质”，这些化合物会导致不利的健康结果，并且很难分解。等离子体技术为补救提供了途径，尤其是通过生产溶解在水中的游离电子（“溶剂化电子”）。该奖项支持科罗拉多学院的Light博士，该项目旨在研究大气压力等离子体的解决电子产品的生产。该奖项还将提供资源，以通过“研究孵化器”课程和资助的夏季研究职位涉及少量背景的大量本科生。该研究计划在未来五到十年中的总体目标是了解使用低温等离子体（LTP）涉及的物理和化学反应，以分解并从水中提取顽固污染物。该项目旨在通过调整现有的光谱技术来测量水面上解决的电子的时间依赖性浓度。 SuperContinuum瞬态吸收光谱是一种研究时间分辨的化学和物理过程的良好方法，但尚未应用于LTP或血浆/水位界面。这种诊断的发展将为对LTP的时间分辨研究及其驾驶的化学反应开放新的途径。拟议的研究还将照亮大气压力等离子体的景观作为解决电子的源，产生有关哪些等离子体参数对过程很重要的信息，并指导优化等离子源以进行修复应用的努力。该奖项为一项试验“研究孵化器”课程提供了资金，该课程是为来自代表性不足的一年级学生而设计的，以降低进入本科研究职位的入口障碍。该课程将在赠款期间两次，每次有十名学生的上限。该奖项还为低收入，少数和第一代大学生建立了六项专门的研究压力。该奖项反映了NSF的法定任务，并使用基金会的知识分子优点和更广泛的影响审查标准，认为值得通过评估来获得支持。