相关实验视频

Updated: Jun 29, 2025

Electrophoretic Crystallization of Ultrathin High-performance Metal-organic Framework Membranes

Electrophoretic Crystallization of Ultrathin High-performance Metal-organic Framework Membranes

Published on: August 16, 2018

在基于MOF的混合矩阵膜中对界面兼容性的自我排序

Anheng Qi¹, Conger Li¹, Jack D Evans²

¹School of Physical Science and Technology, ShanghaiTech University, Shanghai, 201210, P. R. China.

Angewandte Chemie (International ed. in English)

|April 9, 2024

概括

一种新的自我分类方法在混合矩阵膜 (MMM) 中对金属-有机框架 (MOF) -聚合物兼容性进行了排名. 这种方法通过评估界面亲和力来预测膜性能,改善了气体分离技术.

科学领域:

材料科学材料科学材料科学
化学工程是化学工程的重要组成部分.
膜技术膜技术膜技术

背景情况:

基于金属有机框架 (MOF) 的混合矩阵膜 (MMM) 提供比传统的聚合物膜更好的气体分离性能.
MMM的性能严重依赖MOF填充剂和聚合物矩阵之间的兼容性,这是历史上难以量化的因素.
目前的方法通常需要进行广泛的气体运输实验来确定MOF-聚合物适用性,缺乏直接接口表征技术.

研究的目的:

开发和演示一种新的自我分类方法,用于直接排名MOF-聚合物界面兼容性.
建立一个可靠的,可预测的工具,用于为混合矩阵膜选择最佳的MOF-聚合物对.
为了将接口兼容性排名与实际混合矩阵膜气体分离性能进行相关联.

主要方法:

通过在混合矩阵膜中混合单个MOF与两个不同的聚合物,采用了一种自我分类技术.
这两种聚合物固有的脱混合产生了单独的域,指导基于界面亲和力的MOF粒子分区.
聚合物对的系统变化允许MOF-聚合物界面兼容性从最高到最低的排名.

主要成果:

自排序方法成功地对各种MOF-聚合物组合的界面兼容性进行了排名.
MOF颗粒优先分离到具有更高界面亲和力的聚合物领域.
从自排序方法预测的高兼容性和可预测的混合矩阵膜气体分离性能之间观察到强烈的相关性.

结论:

开发的自我分类方法提供了直接和有效的手段来量化MOF-聚合物界面兼容性.
这种技术通过确定最佳的MOF-聚合物配对来促进混合矩阵膜的合理设计.
这些发现表明,改进的界面兼容性直接转化为MMM中更可预测和潜在增强的气体分离性能.

关键词:

气体分离器的气体分离器接口兼容性接口兼容性金属有机框架混合矩阵膜的混合矩阵膜.阶段分离的阶段分离.

更多相关视频

Synthesis and Characterization of Functionalized Metal-organic Frameworks

Synthesis and Characterization of Functionalized Metal-organic Frameworks

Published on: September 5, 2014

Solvothermal Synthesis of MIL-96 and UiO-66-NH2 on Atomic Layer Deposited Metal Oxide Coatings on Fiber Mats

Solvothermal Synthesis of MIL-96 and UiO-66-NH2 on Atomic Layer Deposited Metal Oxide Coatings on Fiber Mats

Published on: June 13, 2018

相关概念视频

Comparing Intermolecular Forces: Melting Point, Boiling Point, and Miscibility

Comparing Intermolecular Forces: Melting Point, Boiling Point, and Miscibility

Intermolecular forces are attractive forces that exist between molecules. They dictate several bulk properties, such as melting points, boiling points, and solubilities (miscibilities) of substances. Molar mass, molecular shape, and polarity affect the strength of different intermolecular forces, which influence the magnitude of physical properties across a family of molecules.
Temporary attractive forces like dispersion are present in all molecules, whether they are polar or nonpolar. They...

Membrane Fluidity

Membrane Fluidity

Cell membranes are composed of phospholipids, proteins, and carbohydrates loosely attached to one another through chemical interactions. Molecules are generally able to move about in the plane of the membrane, giving the membrane its flexible nature called fluidity. Two other features of the membrane contribute to membrane fluidity: the chemical structure of the phospholipids and the presence of cholesterol in the membrane.

Fluid Mosaic Model

Fluid Mosaic Model

Scientists identified the plasma membrane in the 1890s and its principal chemical components (lipids and proteins) by 1915. The model for plasma membrane structure, proposed in 1935 by Hugh Davson and James Danielli, was the first model to be widely accepted in the scientific community. The model was based on the plasma membrane's "railroad track" appearance in early electron micrographs. Davson and Danielli theorized that the plasma membrane's structure resembled a sandwich...

Mechanisms of Membrane Domain Formation

Mechanisms of Membrane Domain Formation

Different physical properties of lipids and proteins allow them to localize and form distinct islands or domains in the membrane. Some membrane domains are formed due to protein-protein interactions, whereas others are formed due to the presence of specific lipids such as sphingolipids and sterols—for example, large proteins, such as bacteriorhodopsin, aggregate and create distinct domains.
Another mechanism for membrane domain formation involves membrane proteins interacting with...