Research Initiation Award: Mechanisms of CO2 Adsorption in Amine-immobilized Porous Materials

研究启动奖：胺固定多孔材料中CO2吸附机理

• 批准号: 1800795
• 负责人: Daniel Autrey
• 金额: $ 29.62万
• 依托单位: Fayetteville State University
• 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 2024-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1800795&HistoricalAwards=false
• 关键词: Research; Initiation; Award; Mechanisms; CO2

The Historically Black Colleges and Universities-Undergraduate Program (HBCU-UP) Research Initiation Awards (RIAs) provide support to STEM faculty at HBCUs to pursue research at their home institution, at an NSF-funded Center, at a research intensive institution or at a national laboratory. The RIA projects are expected to help further the faculty member's research capability and effectiveness, to improve research and teaching at their home institution, and to involve undergraduate students in research experiences. With support from the National Science Foundation, Fayetteville State University (FSU), will conduct research aimed at addressing one of the most pressing environmental concerns of our age: the escalating level of atmospheric carbon dioxide (CO2), which is a major greenhouse gas largely correlated to the combustion of fossil fuels. For the foreseeable future, it seems that the ever-growing energy demand will most likely necessitate more consumption of these indispensable sources of energy. Therefore, it is strategically important to develop technologies for Carbon Capture, Usage and Storage (CCUS). Currently, aqueous amine solution is the most advanced technology for carbon capture. However, the use of aqueous amine solution suffers from several significant drawbacks, including apparatus corrosion and high regeneration cost. These disadvantages can be alleviated if we graft amine into porous solid matrix instead of mixing with water. This project aims at developing novel amine-grafted porous organic polymers for efficient carbon capture. We expect two major benefits for our designed materials: one is noncorrosive. Amines are grafted inside the porous solid matrix without direct contact the apparatus. The other is energy efficient. Water has one of the highest heat capacities. It costs a lot more energy to heat aqueous solution than porous solid in a temperature swing process. The successful implementation of this proposed research will enhance our international competitiveness in carbon capture technology.The scientific challenges for amine-grafted porous materials to become an economically viable technology for carbon capture are their CO2 loading, recyclability, and manufacturing costs. The better understanding of adsorption-desorption mechanisms of CO2 in amine-grafted porous materials is one of the key factors which will help us design and synthesize such materials to reach maximum CO2 loading with optimized energy efficiency. We propose several strategies to build porous polymeric platforms to study the structure-property correlations between amines and CO2 molecules. First, we build anchors in the porous platforms, then we use these anchors to attach amines of different lengths. The number of amines that could be incorporated is largely dependent upon the number of installed anchors; therefore, high concentration and even distribution of anchors inside the porous platforms ensure the maximum amine loading afterwards. The proposed research will advance our understanding of the CO2 adsorption-desorption mechanisms in amine-grafted porous materials at the molecular level. The knowledge generated will guide the development of such materials of high CO2 loading with optimized energy efficiency. The proposed research will also allow the PI to work with two to three undergraduate researchers each year over a three-year course. All of them will obtain extensive training in experimental design and implementation, data collection and analysis, results presentation and publication, etc. Such experiences will boost their competency and prepare them for graduate schools or professional workforces.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.

历史上的黑人学院和大学本科课程（HBCU-UP）研究启动奖（RIA）为HBCU的STEM教师提供支持，以便在他们的家乡机构，NSF资助的中心，研究密集型机构或国家实验室进行研究。RIA项目预计将有助于进一步提高教师的研究能力和有效性，改善他们所在机构的研究和教学，并让本科生参与研究经验。在美国国家科学基金会的支持下，费耶特维尔州立大学（FSU）将开展旨在解决我们这个时代最紧迫的环境问题之一的研究：大气中二氧化碳（CO2）的水平不断上升，这是一种主要的温室气体，主要与化石燃料的燃烧有关。在可预见的未来，不断增长的能源需求似乎很可能需要更多地消耗这些不可或缺的能源。因此，开发碳捕集、利用和封存技术具有重要的战略意义。胺水溶液是目前最先进的碳捕集技术。然而，胺水溶液的使用具有几个显著的缺点，包括设备腐蚀和高再生成本。如果我们将胺接枝到多孔固体基质中，而不是与水混合，这些缺点可以得到缓解。该项目旨在开发新型胺接枝多孔有机聚合物以实现高效的碳捕获。我们希望我们设计的材料有两个主要优点：一是无腐蚀性。胺接枝在多孔固体基质内而不直接接触装置。另一个是能源效率。水的热容量是最高的。在变温过程中，加热水溶液比加热多孔固体要消耗更多的能量。这项研究的成功实施将提高我们在碳捕集技术方面的国际竞争力。胺接枝多孔材料要成为一种经济可行的碳捕集技术，其科学挑战是其CO2负载，可回收性和制造成本。更好地理解CO2在胺接枝多孔材料中的吸附-脱附机理是帮助我们设计和合成此类材料以达到最大CO2负载量并优化能量效率的关键因素之一。我们提出了几种策略来构建多孔聚合物平台，以研究胺和CO2分子之间的结构-性能相关性。首先，我们在多孔平台中构建锚，然后我们使用这些锚连接不同长度的胺。可以掺入的胺的数量在很大程度上取决于安装的锚钉的数量;因此，多孔平台内锚钉的高浓度和均匀分布确保了随后的最大胺负载。该研究将有助于我们从分子水平上深入理解胺接枝多孔材料对CO2的吸附-脱附机理。所产生的知识将指导开发具有最佳能效的高CO2负载材料。拟议的研究还将允许PI在三年的课程中每年与两到三名本科研究人员合作。他们将在实验设计和实施、数据收集和分析、结果展示和出版等方面获得广泛的培训，这些经验将提高他们的能力，并为他们进入研究生院或专业工作队伍做好准备。该奖项反映了NSF的法定使命，并通过使用基金会的智力价值和更广泛的影响审查标准进行评估，被认为值得支持。

项目成果

On the structure of one-dimensional TiO2 lepidocrocite

一维TiO2纤铁矿的结构研究

• DOI: 10.1016/j.matt.2022.10.015
• 发表时间: 2023
• 期刊: Matter
• 影响因子: 18.9
• 作者: Badr, Hussein O.;Lagunas, Francisco;Autrey, Daniel E.;Cope, Jacob;Kono, Takayuki;Torita, Takeshi;Klie, Robert F.;Hu, Yong-Jie;Barsoum, Michel W.
• 通讯作者: Barsoum, Michel W.

Effect of Etching Method on the Morphology and Stability of Ti 2 CT x MXene

刻蚀方法对Ti 2 CT x MXene形貌和稳定性的影响

• DOI: 10.1017/s143192762201056x
• 发表时间: 2022
• 期刊: Microscopy and Microanalysis
• 影响因子: 2.8
• 作者: Udoh, Ona;Briles, Ashlynn;Gautam, Bhoj;Autrey, Daniel E.
• 通讯作者: Autrey, Daniel E.