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Related Concept Videos

Gas Exchange and Transport01:20

Gas Exchange and Transport

63.5K
Gas exchange, the intake of molecular oxygen (O2) from the environment and the outflow of carbon dioxide (CO2) into the environment, is necessary for cellular function. Gas exchange during respiration occurs largely via the movement of gas molecules along pressure gradients. Gas travels from areas of higher partial pressure to areas of lower partial pressure. In mammals, gas exchange occurs in the alveoli of the lungs, which are adjacent to capillaries and share a membrane with them.
63.5K
The Significance of Membrane Transport01:44

The Significance of Membrane Transport

20.2K
The transport of solutes across the cell membrane is essential for metabolic processes, like maintaining cell size and volume, generating the action potential, exchanging nutrients and gases, etc. Membrane transport can be either passive or active. It can be simple diffusion, facilitated, or mediated transport aided by transport proteins such as transporters and channels.
Transporters facilitate either an active or passive movement of solutes. They can allow a single-molecule transport down its...
20.2K
Physical Principles Governing Gas Exchange01:16

Physical Principles Governing Gas Exchange

1.5K
Gas behavior plays a vital role in understanding bodily processes such as external and internal respiration. External respiration involves the diffusion of oxygen into the blood and carbon dioxide out of it in the lungs. In contrast, internal respiration happens in body tissues, where these gases move in opposite directions.
Gas Laws Governing Respiration
The behavior of gases is guided by Dalton's Law of partial pressures and Henry's Law.
Dalton's Law asserts that the total...
1.5K
Membrane Transporters01:31

Membrane Transporters

10.0K
Transporters are essential membrane transport proteins with functions related to cell nutrition, homeostasis, communication, etc. Approximately 7% of all genes in the human genome code for transporters or transporter-related proteins.
Transporters are mainly composed of alpha-helices, built from bundles of ten or more helices traversing the plasma membrane. The solute-binding sites are located midway, where some of the helices are broken or distorted, making space for the binding site through...
10.0K
Transcellular Transport of Solutes01:23

Transcellular Transport of Solutes

3.3K
Transcellular transport of solutes is the movement of substances like monosaccharides and amino acids through polarized cells. This transport mechanism is primarily seen in epithelial and endothelial cells aided by membrane transport proteins such as channels and transporters. The tight junctions between these cells confine the membrane proteins to the two sides of the cell. The epithelial cells have distinct apical and basolateral domains. In contrast, the endothelial cells show the luminal...
3.3K
Glucose Transporters01:27

Glucose Transporters

22.2K
Glucose transporters facilitate the transport of glucose across the cell membrane. In addition to glucose, some glucose transporters can also aid the movement of other hexoses such as fructose, mannose, and galactose.
Facilitated diffusion-glucose transporters (GLUTs) are encoded by the solute-linked carrier (SLC) family 2, subfamily A gene family, or SLC2A. The 14 GLUT protein members are distributed into three classes:
22.2K

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Related Experiment Video

Updated: May 13, 2025

Development and Functionalization of Electrolyte-Gated Graphene Field-Effect Transistor for Biomarker Detection
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Development and Functionalization of Electrolyte-Gated Graphene Field-Effect Transistor for Biomarker Detection

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Gas Transport Mechanisms and Applications Through Graphene-Based Membranes.

Jing Yang1, Zeyu Zhuang1, Ningran Wu1,2

  • 1National Key Laboratory of Advanced Micro and Nano Manufacture Technology, School of Integrated Circuits, Peking University, Beijing, 100871, China.

Small (Weinheim an Der Bergstrasse, Germany)
|May 12, 2025
PubMed
Summary

Graphene-based membranes offer superior gas separation by overcoming traditional material limitations. This review details theoretical and experimental advancements in understanding gas transport through these advanced membranes.

Keywords:
gas separationgraphene‐based membranesindustrial membrane applicationsmolecular transport mechanisms

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Electrophoretic Crystallization of Ultrathin High-performance Metal-organic Framework Membranes
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Synthesis and Functionalization of 3D Nano-graphene Materials: Graphene Aerogels and Graphene Macro Assemblies
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Area of Science:

  • Materials Science
  • Chemical Engineering
  • Nanotechnology

Background:

  • Membrane-based gas separation is crucial for industry, environment, and healthcare.
  • Graphene membranes promise enhanced permeability and selectivity over traditional polymeric membranes.
  • Understanding gas transport in graphene is key for next-generation separation technologies.

Purpose of the Study:

  • To review theoretical and experimental progress in gas transport across graphene-based membranes.
  • To provide a foundation for designing advanced graphene gas separation membranes.
  • To identify challenges and future directions in the field.

Main Methods:

  • Discussion of gas transport theory and numerical analysis from continuum to sub-continuum regimes.
  • Presentation of simulation and experimental developments.
  • Analysis of fundamental mechanisms governing gas transport.

Main Results:

  • Graphene-based membranes show potential to surpass traditional membranes in gas separation.
  • Theoretical and simulation studies provide insights into gas transport mechanisms.
  • Experimental progress highlights practical applications and performance.

Conclusions:

  • Further research into gas transport mechanisms is essential for optimizing graphene membranes.
  • Bridging theoretical understanding with experimental validation will drive innovation.
  • Addressing current challenges will lead to improved graphene-based gas separation performance.