Property Changes of Multiphasic Fluids by Geometrical Confinement in Advanced Mesoporous Materials

先进介孔材料中几何约束引起的多相流体性质变化

• 批准号: 407319385
• 负责人: Professor Dr. Michael Fröba
• 金额: --
• 依托单位: Institut de Physique de Rennes (IPR)
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2018
• 资助国家: 德国
• 起止时间: 2017-12-31 至 2023-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/407319385?language=en
• 关键词: Property; Changes; Multiphasic; Fluids; Geometrical

Fluids confined in nanometer-size porous geometry exhibit unique properties that have no equivalent in the corresponding bulk systems. As such, they deserve an extensive interest for their high potential of technological innovation. In this context, the scientific community has been encouraged to improve the ground basis knowledge of nanoconfined liquids. During the last decade, an impressive number of physico-chemical properties have been studied when confining a fluid in a mesoporous medium. As a whole, it appears that the nature of the surface-liquid interaction and the geometric parameters of confinement readily affect the phase behavior, structure, dynamics and fluid flow, leading to original physico-chemical phenomena.The next step in the field would be to direct the (new) properties of nanofluids in a desired manner. Many of the studied systems comprised a single fluid phase confined in a ‘passive’ porous material, which is seen as a bottleneck to such developments. For this reason, the intension of the NanoLiquids project, is to explore the properties of new systems that would allow for an unprecedented control of interfaces based on the nanoconfinement of multicomponent fluids into functionalized porous materials with periodically alternating surface chemistry. Starting from examinations of the mesoscale structure and dynamics of the bulk binary systems the physico-chemical properties of mixtures confined in tailored mesoporous media shall be explored. In particular effects such as microphase separation, enhanced gas solubility and confinement-induced changes in the fluid rheology as well as the interplay of these phenomenologies will be in the research focus. These studies will be possible only by the combination of an extensive number of complementary methods and skills in physics and chemistry, both experimental and numerical, encompassing temporal and spatial windows that range from the molecular to the macroscopic scales and provide a strong added value to the proposed French-German collaboration.

纳米尺寸的多孔几何形状中的流体表现出独特的性质，在相应的散装系统中没有等效的。因此，它们因其技术创新的巨大潜力而值得广泛关注。在这方面，鼓励科学界提高对纳米约束液体的基础知识。在过去的十年中，一个令人印象深刻的物理化学性质的数量已被研究时，限制在介孔介质中的流体。总体而言，表面-液体相互作用的性质和限制的几何参数很容易影响相行为、结构、动力学和流体流动，从而导致原始的物理化学现象。该领域的下一步将是以所需的方式指导纳米流体的（新）性质。许多研究的系统包括一个单一的流体相限制在一个“被动”的多孔材料，这被视为一个瓶颈，这样的发展。出于这个原因，NanoLiquids项目的目的是探索新系统的特性，这些新系统将允许基于多组分流体到具有周期性交替表面化学的功能化多孔材料中的纳米限制的前所未有的界面控制。从大量二元系统的介观结构和动力学的检查开始，将探索限制在定制的介孔介质中的混合物的物理化学性质。特别是影响，如微相分离，提高气体溶解度和约束引起的流体流变学的变化，以及这些现象的相互作用将是研究的重点。这些研究只有结合大量的物理学和化学方面的实验和数值的互补方法和技能才有可能，包括从分子到宏观尺度的时间和空间窗口，并为拟议的法德合作提供强大的附加值。