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Related Experiment Video

Updated: May 2, 2026

Scalable Syntheses of Graphene Oxide and Reduced Graphene Oxide using Cascade Design Oxidation and Highly Basic Reduction Reactions
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Monolithic graphene oxide sheets with controllable composition.

Jae Hwan Chu1, Jinsung Kwak1, Sung-Dae Kim2

  • 11] School of Materials Science and Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan 689-798, Republic of Korea [2].

Nature Communications
|March 1, 2014
PubMed

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Summary

Researchers developed a novel physical method to create monolithic graphene oxide sheets. This solution-free approach yields electrically active, tunable graphene oxide, paving the way for advanced graphene devices.

Area of Science:

  • Materials Science
  • Nanotechnology
  • Chemistry

Background:

  • Graphene oxide (GO) has diverse applications but typically requires solution-based chemical synthesis.
  • Producing monolithic GO sheets, essential for precise graphene device assembly, has remained a significant challenge.
  • Existing methods often yield non-monolithic structures, limiting their use in advanced applications.

Purpose of the Study:

  • To develop a novel, physical method for synthesizing monolithic graphene oxide (GO) sheets.
  • To achieve tunable oxygen-to-carbon composition in the synthesized GO.
  • To explore the electronic properties and potential applications of the physically synthesized GO.

Main Methods:

  • A physical approach using solid carbon and copper foil was employed for GO synthesis.

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  • The process involved controlled carbon diffusion through copper foil and trapping of oxygen species.
  • Experimental and theoretical studies were conducted to analyze the material's structure and properties.

    • Main Results:

    • Monolithic graphene oxide sheets were successfully produced on copper foil via a physical, solution-free method.
    • The synthesized GO exhibited tunable oxygen-to-carbon composition.
    • The resulting graphene oxide sheets were electrically active and possessed tunable bandgap energy and electronic properties.

    Conclusions:

    • A novel physical synthesis route for monolithic graphene oxide has been established.
    • This method offers control over GO's composition and electronic properties, unlike traditional chemical approaches.
    • The technique holds promise for producing a new class of two-dimensional, chemically modified carbon materials for advanced applications.