Structural Characterization of Nanoporous Materials by Solid-state NMR and Vibrational Spectroscopy

通过固态核磁共振和振动光谱法表征纳米多孔材料

• 批准号: 202830-2012
• 负责人: Huang, Yining
• 金额: $ 6.27万
• 依托单位: University of Western Ontario
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2015
• 资助国家: 加拿大
• 起止时间: 2015-01-01 至 2016-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=569841
• 关键词: Structural; Characterization; Nanoporous; Materials; Solid

Nanoporous materials including microporous materials and metal-organic frameworks (MOFs) have many industrial and technological applications in catalysis, separation, sensors, fuel cells, and solid-state devices. Emerging uses lie in the areas of medical drug delivery systems, agricultural and environmental applications. Nanoporous materials characterization is extremely important because a detailed understanding the relationship between the key properties of these materials and their unique structures is crucial for developing new applications and/or improving their performance for their current uses. Our research will focus on the following areas: [1] There is a large industrial interest in microporous materials (also known as molecular sieves). However, since the nucleation and growth of these materials are not completely understood at the molecular level, a rational design of novel frameworks with desired properties is still difficult. We will use our expertise in solid-state NMR and vibrational spectroscopy to carefully study the formation mechanisms of microporous materials. The information obtained from such experiments will enhance our ability to rationally design novel materials with desired properties for specific applications. [2] MOFs are a class of new nanoporous materials with promising properties for hydrogen adsorption, carbon dioxide storage and catalysis. We will develop solid-state NMR spectroscopy as a characterization tool for probing their metal environments. We anticipate that the research will provide structural knowledge that will allow us to subtly control and tailor these metal center environments for specific applications. [3] We will explore the possibility of using high external pressure to fine tune MOF properties. The objective here is to tailor the materials to serve as size- and shape-selective adsorbents suitable for separation. [4] We will develop syntheses of porous metal chalcogenide semiconductors under solvothermal conditions for the expressed purpose of preparing novel porous semiconducting materials that can be potentially used for shape-selective photocatalysis and solar energy conversion.

纳米多孔材料包括微孔材料和金属有机框架（mof）在催化、分离、传感器、燃料电池和固态器件等方面有着广泛的工业和技术应用。新兴用途在于医疗药物输送系统、农业和环境应用领域。纳米多孔材料的表征非常重要，因为详细了解这些材料的关键特性与其独特结构之间的关系对于开发新的应用和/或改善其当前用途的性能至关重要。我们的研究将集中在以下领域：微孔材料（也称为分子筛）有很大的工业兴趣。然而，由于这些材料的成核和生长在分子水平上尚未完全了解，因此合理设计具有所需性能的新型框架仍然很困难。我们将利用我们在固态核磁共振和振动光谱方面的专业知识仔细研究微孔材料的形成机制。从这些实验中获得的信息将提高我们合理设计具有特定应用所需性能的新材料的能力。[2] mof是一类新型的纳米多孔材料，在氢吸附、二氧化碳储存和催化等方面具有良好的性能。我们将开发固态核磁共振光谱作为探测其金属环境的表征工具。我们预计这项研究将提供结构知识，使我们能够巧妙地控制和定制这些金属中心环境，以适应特定的应用。我们将探索利用高外部压力来微调MOF性能的可能性。这里的目标是定制的材料，作为大小和形状选择性吸附剂适合分离。我们将在溶剂热条件下开发多孔金属硫族半导体的合成，以制备新型多孔半导体材料，这些材料可以潜在地用于形状选择光催化和太阳能转换。