Related Experiment Video
Updated: Jun 17, 2025
07:45
Electrophoretic Crystallization of Ultrathin High-performance Metal-organic Framework Membranes
Published on: August 16, 2018
9.9K
Membranes Based on Aminated Graphene Oxide with High Selectivity Toward Organic Substances
Shamil Galyaltdinov1, Gulfina Safina1, Airat Kiiamov2
1Laboratory for Advanced Carbon Nanomaterials, Chemical Institute, Kazan Federal University, Kremlyovskaya Str. 18, Kazan 420008 Tatarstan, Russian Federation.
Langmuir : the ACS Journal of Surfaces and Colloids
|August 6, 2024
Summary
Modified graphene oxide membranes offer efficient separation of organic liquids, showing high flux and selectivity for industrial mixtures without water permeation. These stable membranes are ideal for advanced purification technologies.
Area of Science:
- Materials Science
- Chemical Engineering
Background:
- Graphene oxide (GO) based membranes are promising for separation technologies.
- Developing cost-effective and efficient GO membranes remains a challenge.
Purpose of the Study:
- To prepare and characterize oleylamine-modified graphene oxide membranes.
- To evaluate their performance in separating organic liquids and retaining dyes.
Main Methods:
- Simple wet chemistry protocol for membrane preparation.
- Physicochemical characterization using TGA, FTIR, XRD, and XPS.
- Flux and selectivity measurements for various organic liquids and methylene blue retention.
Main Results:
- Membranes are stable in aqueous and organic media.
- High flux for organic substances with no water permeation at ambient conditions.
- Selectivity increases with membrane thickness; high selectivity for ethanol/1-butanol and acetone/1-butanol pairs.
- 90% retention of methylene blue from alcohol solution.
Conclusions:
- Oleylamine-modified GO membranes are effective for organic liquid separation.
- These membranes show potential for industrial purification and filtration applications.
- The simple preparation method makes them economically viable.
