Fluorination of Metal-Organic Frameworks

金属有机框架的氟化

• 批准号: 2906170
• 金额: --
• 依托单位: University of Manchester
• 依托单位国家: 英国
• 项目类别: Studentship
• 财政年份: 2023
• 资助国家: 英国
• 起止时间: 2023 至 无数据
• 项目状态: 未结题
• 来源: https://gtr.ukri.org/projects?ref=studentship-2906170
• 关键词: Fluorination; Metal; Organic; Frameworks

Background/ objective: Metal-organic frameworks (MOFs) are an exciting, and the largest, family of crystalline nanoporous material that is receiving global research attention for numerous uses including commercial and pilot plant applications for the storage of toxic gases, carbon capture, dehumidification - water harvesting and the control of fruit ripening. Due to the vast number of MOFs, a recent trend is to modify available MOFs in a designed manner to adapt their properties and enhance their application performance. One suitable modification route is to incorporate fluoride anions into the inorganic component of the MOF framework. Inclusion of fluoride anions in this framework component can produce MOFs with exceptional selectivity, recyclability and moisture stability for CO2 separations, or change the onset and degree of framework breathing transitions.Approach: This project aims to replace specific amounts of inorganic anions for fluoride anions in the subset of MOFs that contain inorganic anions as part of the zero-, one- or two-dimensional inorganic component of the MOF using a variety of materials' synthesis and post-synthesis approaches. The MOFs resulting from successful development of such methods will be fully characterized to determine the amount and nature of the fluoride incorporation that will involve powder and single crystal X-ray diffraction, solid state NMR spectroscopy, scanning electron microscopy, XPS and gas adsorption measurements. The resulting MOFs will also be tested for a range of properties including thermoresponsive, gas adsorption/ separation and electrical behaviours. The studentship will be based in Manchester but may involve trips to synchrotron sources for data collection.Novel engineering and/or physical sciences content: This research project will result in new routes to produce designed frameworks for MOFs and to understand the distribution of specific atoms/ groups within their framework. The functional MOFs produced will have modified and controllable properties particularly regarding their thermoresponsive and gas adsorption/ separation properties.Research areas: chemistry; energy; physical sciences; directed assembly; advanced materials

背景/目的：金属有机框架（M0 F）是一种令人兴奋的并且是最大的晶体纳米多孔材料家族，其在许多用途上受到全球研究关注，包括用于有毒气体储存、碳捕获、雨水收集和水果成熟控制的商业和中试植物应用。由于大量的MOFs，最近的趋势是以设计的方式改性可用的MOFs以适应它们的性质并提高它们的应用性能。一种合适的改性途径是将氟阴离子掺入到MOF骨架的无机组分中。在这种骨架组分中包含氟阴离子可以产生具有优异的选择性、可回收性和水分稳定性的用于CO2分离的MOF，或者改变骨架呼吸转变的开始和程度。本项目旨在用特定量的无机阴离子取代含有无机阴离子作为零，使用各种材料合成和合成后方法制备MOF的一维或二维无机组分。将对成功开发此类方法所产生的MOF进行充分表征，以确定氟化物掺入的量和性质，这将涉及粉末和单晶X射线衍射、固态NMR光谱、扫描电子显微镜、XPS和气体吸附测量。还将测试所产生的MOF的一系列特性，包括热敏性、气体吸附/分离和电学行为。新的工程和/或物理科学内容：该研究项目将产生新的路线，以产生设计的框架MOFs和了解其框架内的特定原子/基团的分布。所生产的功能性MOFs将具有改性和可控的性质，特别是关于它们的温敏和气体吸附/分离性质。研究领域：化学;能源;物理科学;定向组装;先进材料