Unraveling Plasma-Assisted Catalysis: Toward Understanding Fundamental Molecule-Surface Interactions and Energy Partitioning Synergisms

揭示等离子体辅助催化:理解基本的分子-表面相互作用和能量分配协同作用

基本信息

  • 批准号:
    1803067
  • 负责人:
  • 金额:
    $ 35万
  • 依托单位:
  • 依托单位国家:
    美国
  • 项目类别:
    Standard Grant
  • 财政年份:
    2018
  • 资助国家:
    美国
  • 起止时间:
    2018-09-01 至 2022-08-31
  • 项目状态:
    已结题

项目摘要

The proposed project seeks to explore the fundamental chemistry occurring in low temperature plasmas (LTPs) used for plasma-assisted catalytic (PAC) processes designed to remove atmospheric pollutants. Plasmas contain a broad spectrum of reactive species that can work synergistically with a catalyst to enhance the overall elimination of contaminants such as nitrogen oxides (NOx) and volatile organic compounds (VOCs). The mechanisms for these cooperative actions, however, are not well understood. The proposed work will combine electronic structure calculations with multiple spectroscopic analysis tools to unravel the complexity of reactions occurring in this system. The proposed research will combine experimental and theoretical approaches to decipher energy partitioning and inter-twined reactions to elicit predictive outcomes. These studies are designed to illuminate key factors that address critical foundational science challenges associated with LTP processes, including determining how energy is partitioned in LTPs and how reactive species are formed in these systems. On a molecular level, the project seeks to determine how substrate architecture (including micro- and nanostructure) affects plasma-surface interactions as well as the mechanisms for plasma-substrate interactions. The proposed experiments will provide robust experimental data to improve computer models of relevant LTPs that currently rely on either incomplete data or extrapolated information for plasma properties. A key element is a comprehensive approach that connects gas-phase chemistry with molecule-surface interactions to elucidate the underlying chemistry in PAC systems with enhanced performance. Spatially- and temporally-resolved absorption and emission spectroscopies along with mass spectrometry will be used to probe dynamics, energy partitioning and synergisms among chemical processes in LTPs. Substrates and plasma processing systems selected for the proposed study are designed to improve performance of plasma-catalytic removal of atmospheric pollutants. The PI has a strong track record of mentoring groups traditionally underrepresented in STEM and is currently leading efforts to establish a cross-college, multidisciplinary School of Advanced Materials Discovery (SAMD) at Colorado State University. SAMD will house interdisciplinary degree programs and serve as an umbrella organization for materials-related education and outreach. Based on the proposed work, the PI and her trainees will further develop materials-focused kits for use in K-12 classrooms and demonstrations that emphasize materials chemistry and plasma processing.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.
拟议的项目旨在探索低温等离子体(LTP)中发生的基本化学,用于旨在去除大气污染物的等离子体辅助催化(PAC)过程。等离子体含有广谱的反应性物质,其可以与催化剂协同作用,以增强对污染物(例如氮氧化物(NOx)和挥发性有机化合物(VOC))的总体消除。然而,这些合作行动的机制并不十分清楚。拟议的工作将联合收割机电子结构计算与多种光谱分析工具相结合,以揭示该系统中发生的反应的复杂性。拟议的研究将结合联合收割机的实验和理论方法来破译能量分配和相互作用的反应,以得出预测的结果。这些研究旨在阐明解决与LTP过程相关的关键基础科学挑战的关键因素,包括确定能量如何在LTP中分配以及活性物质如何在这些系统中形成。在分子水平上,该项目旨在确定基底结构(包括微米和纳米结构)如何影响等离子体-表面相互作用以及等离子体-基底相互作用的机制。拟议的实验将提供强大的实验数据,以改善计算机模型的相关LTP,目前依赖于不完整的数据或外推的信息等离子体属性。一个关键因素是一个全面的方法,连接气相化学与分子表面相互作用,以阐明PAC系统的基本化学与增强性能。空间和时间分辨的吸收和发射光谱沿着质谱将用于探测LTP中化学过程之间的动力学、能量分配和协同作用。 为拟议的研究选择的基板和等离子体处理系统的设计,以提高性能的等离子体催化去除大气污染物。PI在传统上在STEM中代表性不足的指导小组方面有着良好的记录,目前正在努力在科罗拉多州立大学建立一个跨学院、多学科的先进材料发现学院(SAMD)。SAMD将容纳跨学科学位课程,并作为材料相关教育和推广的伞式组织。根据建议的工作,PI和她的学员将进一步开发用于K-12教室和演示的以材料为重点的套件,强调材料化学和等离子体处理。该奖项反映了NSF的法定使命,并被认为值得通过使用基金会的知识价值和更广泛的影响审查标准进行评估来支持。

项目成果

期刊论文数量(9)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
Employing Optical Emission Spectroscopy to Elucidate the Impact of Titanium Dioxide in Plasma-Assisted Catalysis
  • DOI:
    10.1021/acs.jpcc.0c10698
  • 发表时间:
    2021-02
  • 期刊:
  • 影响因子:
    3.7
  • 作者:
    Tara L. Van Surksum;E. R. Fisher
  • 通讯作者:
    Tara L. Van Surksum;E. R. Fisher
Gas-phase diagnostic studies of H 2 and CH 4 inductively coupled plasmas
H 2 和CH 4 感应耦合等离子体的气相诊断研究
Elucidating energetics and kinetics in environmentally relevant mixed gas plasmas
阐明环境相关混合气体等离子体的能量学和动力学
Investigating recent developments and applications of optical plasma spectroscopy: A review
研究光学等离子体光谱的最新发展和应用:综述
Tailoring the surface properties of porous zeolite constructs using plasma processing
  • DOI:
    10.1016/j.micromeso.2020.110467
  • 发表时间:
    2020-11
  • 期刊:
  • 影响因子:
    5.2
  • 作者:
    Angela R. Hanna;E. R. Fisher
  • 通讯作者:
    Angela R. Hanna;E. R. Fisher
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Ellen Fisher其他文献

The Hopkins Symptom Checklist. Assessing emotional distress in obstetric-gynecologic practice.
霍普金斯症状清单。
  • DOI:
  • 发表时间:
    1976
  • 期刊:
  • 影响因子:
    1.9
  • 作者:
    Karl Rickels;Celso;Ronald S. Lipman;Derogatis Lr;Ellen Fisher
  • 通讯作者:
    Ellen Fisher

Ellen Fisher的其他文献

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{{ truncateString('Ellen Fisher', 18)}}的其他基金

Systematic Studies of the Dynamics, Energetics, and Surface Interactions of Plasma Species during Materials Processing
材料加工过程中等离子体物质的动力学、能量学和表面相互作用的系统研究
  • 批准号:
    1152963
  • 财政年份:
    2012
  • 资助金额:
    $ 35万
  • 项目类别:
    Standard Grant
Toward Fundamental Understanding of Plasma Processing Mechanisms: In Situ Studies of the Gas-Surface Interface During Materials Deposition and Modification
对等离子体处理机制的基本理解:材料沉积和改性过程中气体-表面界面的原位研究
  • 批准号:
    0911248
  • 财政年份:
    2009
  • 资助金额:
    $ 35万
  • 项目类别:
    Continuing Grant
REU Site: Materials Chemistry Research: Synthesis, Characterization, and Device Fabrication
REU 网站:材料化学研究:合成、表征和器件制造
  • 批准号:
    0649263
  • 财政年份:
    2007
  • 资助金额:
    $ 35万
  • 项目类别:
    Continuing Grant
Toward Fundamental Understanding: Correlating the Gas-Phase, Surface, and Gas-Surface Interface in Halogenated Plasma Systems
迈向基本理解:关联卤化等离子体系统中的气相、表面和气体-表面界面
  • 批准号:
    0613653
  • 财政年份:
    2006
  • 资助金额:
    $ 35万
  • 项目类别:
    Continuing Grant
Mechanistic Studies of Plasma Deposition and Etching for Integrated Circuit Materials
集成电路材料等离子沉积与刻蚀机理研究
  • 批准号:
    0137664
  • 财政年份:
    2002
  • 资助金额:
    $ 35万
  • 项目类别:
    Continuing Grant
Acquisition of an Integrated Scanning Electron Microscope System
购置集成扫描电子显微镜系统
  • 批准号:
    0114093
  • 财政年份:
    2001
  • 资助金额:
    $ 35万
  • 项目类别:
    Standard Grant
Acquisition of XPS Instrumentation for a Departmental Materials Characterization Facility
为部门材料表征设施购置 XPS 仪器
  • 批准号:
    9977398
  • 财政年份:
    1999
  • 资助金额:
    $ 35万
  • 项目类别:
    Standard Grant
POWRE: Resonantly Enhanced Multiphoton Ionization for Measurement of Radical-Surface Reactivities
POWRE:用于测量自由基表面反应性的共振增强多光子电离
  • 批准号:
    9805815
  • 财政年份:
    1998
  • 资助金额:
    $ 35万
  • 项目类别:
    Standard Grant
Investigation of Plasma Deposition and Etching Mechanisms for Silicon-based Materials
硅基材料的等离子体沉积和刻蚀机理研究
  • 批准号:
    9812332
  • 财政年份:
    1998
  • 资助金额:
    $ 35万
  • 项目类别:
    Continuing Grant
Investigation of Plasma Deposition Mechanisms for Silicon Dioxide and Silicon Nitride Films
二氧化硅和氮化硅薄膜的等离子体沉积机理研究
  • 批准号:
    9501157
  • 财政年份:
    1995
  • 资助金额:
    $ 35万
  • 项目类别:
    Continuing Grant

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旁轴式plasma-pulsed MIG复合焊电弧、熔滴、贯穿小孔和熔池的耦合机理
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