Mixed-dimensional membranes: chemistry and structure-property relationships
Yanan Liu1,2, Marc-Olivier Coppens2, Zhongyi Jiang1
1Key Laboratory for Green Chemical Technology of Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China. zhyjiang@tju.edu.cn.
Chemical Society Reviews
|September 9, 2021
Summary
Mixed dimensional membranes (MDMs) integrate 2D materials with other nanomaterials for advanced membrane design. These novel structures offer tunable nanochannels for diverse separation applications.
Area of Science:
- Materials Science and Engineering
- Nanotechnology
- Chemical Engineering
Background:
- Advances in two-dimensional (2D) nanomaterial chemistry enable new membrane development.
- Existing membranes like mixed matrix or hybrid membranes have limitations.
- A new conceptual approach is needed for designing advanced membranes.
Purpose of the Study:
- To introduce and review the concept of mixed dimensional membranes (MDMs).
- To explore the fabrication, structure, and applications of MDMs.
- To discuss strategies for tuning MDM properties and future perspectives.
Main Methods:
- Review of existing literature on 2D nanomaterials and membrane fabrication.
- Categorization of MDMs based on the dimensionality of integrated nanomaterials (0D/2D, 1D/2D, 3D/2D).
- Analysis of nanochannel structures (1D, 2D, 3D) within MDMs.
Main Results:
- MDMs are fabricated by integrating 2D materials with 0D, 1D, or 3D nanomaterials.
- Three types of nanochannels (1D, 2D, 3D) are identified within different MDM architectures.
- Tunable nanochannel and bulk properties are achieved by controlling nanomaterial characteristics.
Conclusions:
- MDMs offer a novel design paradigm for advanced membranes.
- These membranes show promise in various separation applications including gas, liquid, ionic, and oil/water separations.
- Further research into MDMs can address current challenges and unlock future potential in membrane technology.
Related Concept Videos
01:26Membrane Fluidity
13.2K
Membrane fluidity is explained by the fluid mosaic model of the cell membrane, which describes the plasma membrane structure as a mosaic of components—including phospholipids, cholesterol, proteins, and carbohydrates—that gives the membrane a fluid character.
Mosaic nature of the membrane
The mosaic characteristic of the membrane helps the plasma membrane remain fluid. The integral proteins and lipids exist as separate but loosely-attached molecules in the membrane. The membrane is...
Mosaic nature of the membrane
The mosaic characteristic of the membrane helps the plasma membrane remain fluid. The integral proteins and lipids exist as separate but loosely-attached molecules in the membrane. The membrane is...
13.2K
01:19Fluid Mosaic Model
14.1K
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...
14.1K
01:54What are Membranes?
177.5K
A key characteristic of life is the ability to separate the external environment from the internal space. To do this, cells have evolved semi-permeable membranes that regulate the passage of biological molecules. Additionally, the cell membrane defines a cell’s shape and interactions with the external environment. Eukaryotic cell membranes also serve to compartmentalize the internal space into organelles, including the endomembrane structures of the nucleus, endoplasmic reticulum and...
177.5K
01:15Potentiometry: Membrane Electrodes
911
Membrane electrodes, also known as p-ion electrodes, use membranes that selectively interact with free analyte ions, generating a potential difference across the membrane. The resulting membrane potential, known as the asymmetry potential, is not zero even when analyte concentrations on both sides of the membrane are equal. The membrane's response is typically not selective to a single analyte but proportional to the concentration of all ions in the sample solution capable of interacting at...
911
01:19Membrane Asymmetry Regulating Transporters
6.0K
Enzymes like flippase, floppase, and scramblase transfer phospholipids from one layer to another in the membrane, thereby affecting membrane asymmetry.
Flippase
Eukaryotic flippases are type-IV P-type ATPases or P4-ATPases belonging to P-type ATPase family proteins that are membrane-bound pumps involved in the ATP-mediated transport of ions and molecules across the membrane. Flippases flip specific phospholipids from the outer to the inner leaflet of a membrane. All P4-ATPases have one...
Flippase
Eukaryotic flippases are type-IV P-type ATPases or P4-ATPases belonging to P-type ATPase family proteins that are membrane-bound pumps involved in the ATP-mediated transport of ions and molecules across the membrane. Flippases flip specific phospholipids from the outer to the inner leaflet of a membrane. All P4-ATPases have one...
6.0K
01:18Membrane Domains
6.3K
The membrane domains concentrate specific lipids and proteins at one place within the membrane, which helps in cell signaling, adhesion, and other critical cellular processes. These domains can differ in size, composition, function, and lifespan.
Protein Domains
The membrane comprises a group of distinct proteins responsible for carrying out a cell's specific function. For example, the plasma membrane of the human sperm, or a single germ cell, contains a unique set of proteins in the...
Protein Domains
The membrane comprises a group of distinct proteins responsible for carrying out a cell's specific function. For example, the plasma membrane of the human sperm, or a single germ cell, contains a unique set of proteins in the...
6.3K