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Related Experiment Video

Updated: Jul 12, 2026

Scalable Syntheses of Graphene Oxide and Reduced Graphene Oxide using Cascade Design Oxidation and Highly Basic Reduction Reactions
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Kinetics of single-layer graphite oxidation: evaluation by electron microscopy.

E L Evans, R J Griffiths, J M Thomas

    Science (New York, N.Y.)
    |January 15, 1971
    PubMed
    Summary

    Etch-decoration shows graphite oxidation rates differ significantly between monolayer and multilayer steps. Multilayer steps oxidize nearly 100 times faster than monolayer steps under specific oxygen conditions.

    Area of Science:

    • Surface science
    • Materials science
    • Chemical kinetics

    Background:

    • Graphite surface structure influences chemical reactivity.
    • Understanding step edge kinetics is crucial for materials processing.

    Purpose of the Study:

    • To investigate the differential oxidation rates of carbon atoms at monolayer versus multilayer steps on graphite.
    • To quantify the impact of step height on graphite oxidation kinetics.

    Main Methods:

    • Utilized etch-decoration technique to differentiate step types on graphite surfaces.
    • Performed oxidation experiments under controlled temperature (1113 K) and oxygen pressure (1.33 N/m²).

    Main Results:

    • Identified a significant difference in the rate of carbon atom removal between monolayer and multilayer steps.

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  • Observed that the oxidation rate along layer planes at multilayer steps is approximately 100 times greater than at monolayer steps under identical conditions.

    • Conclusions:

    • Step height on graphite surfaces dramatically affects oxidation rates.
    • Monolayer steps exhibit significantly lower reactivity towards oxidation compared to multilayer steps, impacting surface modification strategies.