Synthetic Control over MOF Particle Growth and Surface Chemistry

MOF 颗粒生长和表面化学的综合控制

基本信息

批准号：
2114430
负责人：
Carl Brozek
金额：
$ 45万
依托单位：
University of Oregon Eugene
依托单位国家：
美国
项目类别：
Standard Grant
财政年份：
2021
资助国家：
美国
起止时间：
2021-08-01 至 2025-07-31
项目状态：
未结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=2114430&HistoricalAwards=false
关键词：
Synthetic Control over MOF Particle

项目摘要

Non-technical SummaryMembranes based on metal-organic frameworks (MOFs), which are three-dimensional (3-D) organic/inorganic compounds, attract intense interest for industrial petroleum refining and gas separations due to their exceptional tunability and synthetic diversity. For MOFs to reach widespread attraction and implementation in the industrial sector, however, researchers will be required to go beyond 3-D MOFs and develop new types of MOF nanoparticles, as they exhibit superior separation performance and generate membranes with superior stability. For the past two decades, bulk powders of MOFs occupied the focus of academic MOF research, but very recent attention has turned to preparing MOF nanoparticles and polymer composites with precise control of particle sizes. Despite preliminary demonstrations of the great potential of MOF nanoparticles, key fundamental questions remain for achieving reproducible control over MOF particle composition and for understanding how particle size and composition impact membrane performance. With this project, supported by the Solid State and Materials Chemistry program in the Division of Materials Research at NSF, Prof. Carl Brozek at the University of Oregon and his research group will investigate the chemical principles that control the precise sizes and compositions of MOF nanocrystals. Mechanistic growth models will be developed in the context of growth models established for other classes of materials so that these results inform the broad field of materials chemistry. Similarly, the synthetic techniques pursued in this proposal will influence materials design beyond MOF particles, by outlining fundamental tools for molecular control over materials across multiple size regimes. The proposed research is practically relevant to society because precise control over MOF nanocrystal sizes will open new frontiers in improved gas separation membranes for industry and the opportunity for elevating MOF application performance to becoming practically relevant. Technical Summary This project, supported by the Solid State and Materials Chemistry program in the Division of Materials Research at NSF, will investigate the fundamental growth mechanisms of metal-organic framework (MOF) particles, develop methods to control particle surface chemistry for enhancing their colloidal stability and interfacing with polymer composites, and understand the impact of size and surface composition on molecular- and charge-transport properties. Tackling this goal will require basic investigation into the parameters that dictate particle sizes, defect incorporation, and surface functionalization. Insight into controlling prenucleation crystal growth of materials in general, reproducible synthesis of MOF-based heterostructure composites, and improving the practical relevance of MOF materials will result from this research. Broader impacts of this proposal include 1) integrating these research aims into educational outreach initiatives that communicate the science of carbon capture technology to underserved students, 2) fostering interdisciplinary training programs that pairs chemistry with architecture students to design air-purification modules, 3) sponsoring industry-academia seminar series on MOF-based carbon-capture, and 4) implementing a teaching course on designing outreach initiative offered year-round to University of Oregon (UO) chemistry PhD 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.

基于金属有机框架（MOF）的非技术摘要，这些框架是三维（3-D）有机/无机化合物，由于其出色的可爱性和合成性而引起了对工业石油精炼和气体分离的强烈兴趣。但是，要使MOF在工业领域达到广泛的吸引力和实施，研究人员将被要求超越3-D MOF并开发新型的MOF纳米颗粒，因为它们表现出卓越的分离性能并产生具有出色稳定性的膜。在过去的二十年中，MOF的散装粉末占据了MOF研究的重点，但是最近的关注已转移到准备MOF纳米颗粒和聚合物复合材料，并精确控制粒径。尽管初步证明了MOF纳米颗粒的巨大潜力，但仍有关键的基本问题仍然用于实现对MOF颗粒组成的可再现控制以及了解粒径和组成如何影响膜性能。借助该项目，在NSF材料研究部的固态和材料化学计划的支持下，俄勒冈大学的Carl Brozek教授及其研究小组将研究控制MOF纳米晶体的精确尺寸和组成的化学原理。机械增长模型将在为其他类别的材料建立的增长模型的背景下开发，以使这些结果为广泛的材料化学领域提供了信息。同样，该提案中提出的合成技术将通过概述用于对多种尺寸制度的材料的分子控制材料的基本工具来影响MOF颗粒以外的材料设计。拟议的研究实际上与社会有关，因为对MOF纳米晶体尺寸的精确控制将在改善行业的气体分离膜以及提高MOF应用程序性能以实际相关的机会方面开放新的边界。技术总结该项目得到了NSF材料研究划分的固态和材料化学计划的支持，将研究金属有机框架（MOF）颗粒的基本增长机制，开发了控制粒子表面化学的方法，以增强其胶体稳定性和与聚合物复合材料的交流，并了解对大小和表面构成的影响，并了解分类和分类的影响。解决此目标将需要对决定颗粒大小，缺陷掺入和表面功能的参数进行基本研究。洞察材料总体上的晶晶晶体生长，基于MOF的异质结构复合材料的可再现合成以及改善MOF材料的实际相关性，将由这项研究产生。该提案的更广泛的影响包括1）将这些研究的目的整合到教育外展计划中，这些计划将碳捕获技术传达给服务不足的学生，2）促进跨学科培训计划，将化学与建筑学学生配对化学与设计空气纯化模块配对，3）在基于MOF的启动过程中，在实施基于MOF的启动方面，并实施了工程，并实施了4）工具，并实施了4）工具，该课程是实施的4）。授予俄勒冈大学（UO）化学博士学位。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标准，被认为值得通过评估来获得支持。

项目成果

期刊论文数量（4）

专著数量（0）

科研奖励数量（0）

会议论文数量（0）

专利数量（0）

Giant Redox Entropy in the Intercalation vs Surface Chemistry of Nanocrystal Frameworks with Confined Pores

有限孔纳米晶体框架插层与表面化学中的巨大氧化还原熵

DOI：
10.1021/jacs.2c12846
发表时间：
2023
期刊：
Journal of the American Chemical Society
影响因子：
15
作者：
Huang, Jiawei;Marshall, Checkers R.;Ojha, Kasinath;Shen, Meikun;Golledge, Stephen;Kadota, Kentaro;McKenzie, Jacob;Fabrizio, Kevin;Mitchell, James B.;Khaliq, Faiqa
通讯作者：
Khaliq, Faiqa

Size-Dependent Properties of Solution-Processable Conductive MOF Nanocrystals