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.

限制在纳米大小的多孔几何形状中的流体暴露的独特特性，这些特性在相应的散装系统中没有等效。因此，他们应该对他们的高技术创新潜力具有广泛的兴趣。在这种情况下，鼓励科学界提高纳米结合液体的基础知识。在过去的十年中，将液体限制在介孔培养基中时，已经研究了令人印象深刻的物理化学特性。总体而言，似乎表面液相互作用的性质和限制的几何参数很容易影响相的行为，结构，动力学和流体流，从而导致原始物理化学现象。该领域的下一步将以所需的方式指导纳米流体的（新）特性。许多研究的系统包括一个限制在“被动”多孔材料中的单个流体相，该相被视为对此类发展的瓶颈。由于这个原因，纳米液体项目的旨意是探索新系统的性质，这些属性将允许基于多型分量流体的纳米构量对界面进行前所未有的控制，并通过定期交替的表面化学技术将多孔材料纳入功能化的多孔材料中。从检查中尺度结构的检查和散装二进制系统的动力学开始，应探索限制在量身定制的中孔介质中的混合物的物理化学特性。特别是诸如微相分离，增强的气体溶解度和限制诱导的流体流变学变化以及这些现象学的相互作用等效果将出现在研究重点中。这些研究只有通过实验和数值的大量补充方法和技能的结合才能进行，包括实验和数值，包括从分子到宏观尺度的临时和空间窗口，并为拟议的法国 - 德国人协作提供了强大的附加值。