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Related Concept Videos

Size-Exclusion Chromatography01:08

Size-Exclusion Chromatography

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In size-exclusion chromatography (SEC), also known as molecular-exclusion or gel-permeation chromatography, molecules are separated based on their sizes. This technique is important for separating large molecules such as polymers and biomolecules. The two classes of micron-sized stationary phases encountered in SEC are silica particles and cross-linked polymer resin beads. Both materials are porous, but their pore sizes vary significantly.
Silica particles offer advantages such as rigidity,...
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Capillary Electrophoresis: Applications01:30

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Capillary electrophoretic separations offer various modes, each with unique applications. These modes include capillary zone electrophoresis, capillary gel electrophoresis, capillary array electrophoresis, capillary isoelectric focusing, capillary isotachophoresis, micellar electrokinetic chromatography, and capillary electrochromatography.
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Updated: Aug 4, 2025

Electrophoretic Crystallization of Ultrathin High-performance Metal-organic Framework Membranes
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Carbon nanomaterial-based membranes in solid-phase extraction.

Chiara Dal Bosco1, Massimo Giuseppe De Cesaris1, Nina Felli1

  • 1Department of Chemistry, Sapienza University, P.le Aldo Moro 5, 00185, Rome, Italy.

Mikrochimica Acta
|April 6, 2023
PubMed
Summary

Carbon nanomaterial (CNM) membranes offer a practical solution for solid-phase extraction (SPE), overcoming handling issues of traditional CNMs. These membranes provide efficient adsorption and high throughput for improved sample preparation.

Keywords:
BuckypaperCarbon nanotubesGrapheneMembranesSolid-phase extraction

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Area of Science:

  • Analytical Chemistry
  • Materials Science

Background:

  • Carbon nanomaterials (CNMs) possess excellent properties for solid-phase extraction (SPE).
  • Practical challenges like poor handling and sorbent loss hinder direct application of CNMs in conventional SPE.
  • CNM-based membranes have emerged as a novel solution to these limitations.

Purpose of the Study:

  • To review the preparation and synthesis of CNM-based membranes.
  • To evaluate the potential of these membranes in SPE applications.
  • To compare CNM-based membranes with conventional SPE materials and devices.

Main Methods:

  • Synthesis of exclusively CNM membranes (e.g., buckypaper, graphene oxide paper).
  • Fabrication of polysaccharide membranes incorporating dispersed CNMs.
  • Application of membranes in flow-through (filter) or magnetic stirring (rotating device) modes for SPE.

Main Results:

  • CNM-based membranes demonstrate excellent transport rates and adsorption capabilities.
  • High throughput and ease of use are significant advantages.
  • Membranes overcome handling issues associated with bulk CNMs.

Conclusions:

  • CNM-based membranes represent a promising advancement in SPE technology.
  • They offer superior performance and practicality compared to conventional carbonaceous sorbents.
  • Further research can address challenges and enhance future applications.