Functional nanoporous materials: Synthesis and adsorption behavior

具有在1-100 nm范围内的明确限定的孔的纳米材料，例如纳米孔，由于在环境修复、清洁工业催化、小型化电子、磁性或光学器件以及生物相容性运输系统中的广泛应用前景而受到特别关注。特别地，有序介孔材料被定义为包含2至15 nm的大通道或笼的周期性阵列的无机框架。虽然大量的研究工作已经针对研究这些固体，进一步的改进，旨在设计的合成，定制的功能化，和表征仍然是非常需要的。该计划的主要目标是设计特定的介孔杂化材料，将所需的官能团与足够的结构和孔隙率的选择性吸附/分离应用，多相催化，和生物技术应用。该计划遵循我们对功能性介孔固体的合成及其通过吸附方法的详细表征所发起的研究工作。该研究旨在开发用于制备和功能化介孔材料的方法，该材料包括在纳米级组装的无机和有机组分，并具有对环境和空间定位的最佳控制。重点也将放在评估给定的功能化材料的性能，为目标的应用和他们的吸附行为。有序介孔二氧化硅主体提供高稳定性和骨架结构的多样性，便于控制客体的处置。根据目标特性，将应用不同的功能化方法（例如，插入功能聚合物，用空间定位进行后接枝）。所得多孔固体的吸附特性将通过使用不同探针（例如氮气、氩气、CO2、水）的高级气体吸附分析来研究，并补充从液体溶液中吸附的研究。除了技术方面，该研究计划强调对固体基质内主客体相互作用和纳米级吸附现象的基本理解。

Nanomaterials with well-defined pores in the range of 1-100 nm, e.g. nanopores, are of special interest because of wide perspective of applications in environmental remediation, clean industrial catalysis, miniaturized electronic, magnetic or optical devices, and biocompatible transport systems. Ordered mesoporous materials, in particular, are defined as inorganic frameworks containing periodic arrays of large channels or cages comprised between 2 and 15 nm. Although substantial research efforts have been directed on studying these solids, further improvements aiming at designed synthesis, tailored functionalization, and characterization are still much needed. The primary objective of this program is to design specific mesoporous hybrid materials incorporating desirable functional groups with adequate structure and porosity for selective sorption/separation applications, heterogeneous catalysis, and biotechnological applications. This program follows research efforts initiated by us on the synthesis of functional mesoporous solids and their detailed characterization by adsorption methods. The research is oriented towards developing methodologies for the preparation and the functionalization of mesoporous materials comprising inorganic and organic components assembled at the nanoscale with optimal control of environment and spatial positioning of groups. Emphasis will also be put on assessing the performance of given functionalized materials for targeted applications and their adsorption behavior. Ordered mesoporous silica hosts offer high stability and diversity in framework structure, facilitating control of the disposition of guests. Depending on the targeted properties, different functionalization approaches will be applied (e.g. insertion of functional polymers, post-grafting with spatial positioning). Adsorption properties of the resulting porous solids will be studied by advanced gas adsorption analyses using different probes e.g. nitrogen, argon, CO2 , water, supplemented with studies of adsorption from liquid solutions. In addition to the technological aspects, the research program emphasizes fundamental understanding of host-guest interactions within solid matrices and adsorption phenomena at the nanoscale.