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Updated: Jan 26, 2026
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Scalable Syntheses of Graphene Oxide and Reduced Graphene Oxide using Cascade Design Oxidation and Highly Basic Reduction Reactions
Published on: July 3, 2025
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Is the interaction between graphene oxide and minerals reversible?
1CAS Key Laboratory of Photovoltaic and Energy Conservation Materials, Institute of Plasma Physics, Chinese Academy of Sciences, P.O. Box 1126, Hefei, 230031, PR China.
Environmental Pollution (Barking, Essex : 1987)
|April 6, 2019
Summary
Graphene oxide (GO) interactions with minerals like goethite and kaolinite are influenced by pH, ionic strength, and temperature. Stronger binding to goethite suggests potential environmental risks.
Area of Science:
- Environmental Science
- Materials Science
- Geochemistry
Background:
- Graphene oxide (GO) production and application are increasing.
- Understanding GO's environmental fate and health risks necessitates studying its mineral interactions.
Purpose of the Study:
- To investigate the reversibility of graphene oxide (GO) interactions with goethite and kaolinite.
- To determine the influence of environmental factors on GO-mineral adsorption and desorption.
Main Methods:
- Adsorption and desorption experiments were conducted.
- The effects of pH, ionic strength, and temperature were analyzed.
Main Results:
- GO adsorption/desorption behavior was significantly affected by pH, ionic strength, and temperature.
- Interaction forces were stronger between GO and goethite compared to kaolinite.
- Electrostatic, hydrogen-bonding, and Lewis acid-base interactions were identified as key mechanisms.
- Irreversible interactions contribute to desorption hysteresis.
Conclusions:
- GO-mineral interactions are complex and influenced by multiple environmental factors.
- The binding affinity varies between different mineral types (goethite > kaolinite).
- Understanding these interactions is crucial for assessing GO's environmental behavior and potential risks.
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