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Related Concept Videos

Membrane Fluidity01:23

Membrane Fluidity

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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.
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Membrane Fluidity01:26

Membrane Fluidity

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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...
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Two Components: Liquid–Liquid Systems01:27

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A pressure-composition phase diagram explicitly describes the behavior of an ideal solution of two volatile liquids under varying pressures and compositions. A pressure-composition diagram has two main curves. The bubble point curve represents the plot of pressure versus liquid mole fraction. It indicates the pressure at which the first bubble of vapor forms from the liquid phase as the system pressure decreases.The dew point curve is the pressure versus vapor mole fraction. It indicates the...
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Nonideal Two-Component Liquid Solutions01:29

Nonideal Two-Component Liquid Solutions

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Nonideal liquid solutions, also known as real solutions, do not strictly follow Raoult's law. Raoult's law is a rule of thumb in physical chemistry. However, not all mixtures adhere to this law due to varying molecular interactions. For example, in an acetone/chloroform solution, the individual vapor pressures of the components are lower than expected, resulting in a total vapor pressure below that predicted by Raoult's law, causing a negative deviation.On the other hand, in an ethanol/water...
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Updated: Mar 18, 2026

Electrophoretic Crystallization of Ultrathin High-performance Metal-organic Framework Membranes
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Two-dimensional materials for novel liquid separation membranes.

Yulong Ying1, Yefeng Yang, Wen Ying

  • 1State Key Laboratory of Silicon Materials, School of Materials Science and Engineering, Zhejiang University, Hangzhou, 310 027, People's Republic of China.

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|July 9, 2016
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Summary
This summary is machine-generated.

Two-dimensional (2D) materials offer ideal properties for advanced molecular separation membranes in water purification. This review details their fabrication, mechanisms, and applications for enhanced permeation and selectivity.

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Area of Science:

  • Materials Science
  • Nanotechnology
  • Environmental Engineering

Background:

  • The urgent need for efficient molecular separation membranes in water purification and desalination drives research into novel materials.
  • Graphene and other two-dimensional (2D) materials possess unique properties like atomic thinness, high mechanical strength, and flexibility, making them promising for membrane applications.

Purpose of the Study:

  • To review the latest advancements in 2D material-based membranes for molecular separation.
  • To critically analyze fabrication techniques, structural designs, simulation methods, and applications of these membranes.
  • To provide insights into separation mechanisms and address challenges in the field.

Main Methods:

  • Review of theoretical and experimental studies on 2D material-based membranes.
  • Analysis of fabrication strategies, including control of microstructures and pore engineering.
  • Discussion of simulation approaches and experimental validation of separation performance.

Main Results:

  • 2D materials enable ultrafast molecular separation with tunable selectivity due to their intrinsic properties and engineered structures.
  • Strategies for controlling defects, nanopores, interlayer spacing, and surface properties enhance membrane performance.
  • Significant progress has been made in nanofiltration/ultrafiltration and pervaporation applications.

Conclusions:

  • 2D material-based membranes represent a significant breakthrough in water purification and desalination technologies.
  • Further research is needed to address existing challenges, refine separation mechanisms, and optimize membrane design for practical applications.
  • This review serves as a comprehensive resource for researchers in the field of 2D material-based membranes.