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Updated: Sep 4, 2025

Scalable Syntheses of Graphene Oxide and Reduced Graphene Oxide using Cascade Design Oxidation and Highly Basic Reduction Reactions
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Remarkably enhanced dynamic oxygen migration on graphene oxide supported by copper substrate.

Zihan Yan1, Wenjie Yang1, Hao Yang1

  • 1College of Physical Science and Technology, Yangzhou University, Jiangsu 225009, China. zhaoliang@yzu.edu.cn.

Nanoscale Horizons
|July 13, 2022
PubMed
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Graphene oxide (GO) dynamic reactions are enhanced on copper substrates. This study reveals reduced energy barriers for oxygen migration on GO@copper, enabling new reaction pathways for functional materials.

Area of Science:

  • Materials Science
  • Surface Chemistry
  • Computational Chemistry

Background:

  • Dynamic covalent properties of graphene oxide (GO) are crucial for applications.
  • Reversibly breaking/reforming oxygen functional groups on GO is challenging.
  • Existing methods include photonic, mechanical, or water-mediated reactions.

Purpose of the Study:

  • To investigate the effect of a copper substrate on the dynamic covalent properties of GO.
  • To understand the mechanisms of oxygen migration and bond dynamics on GO supported by copper.
  • To explore new strategies for tuning the reactivity of GO functional groups.

Main Methods:

  • Density functional theory (DFT) calculations were employed.
  • Simulations focused on graphene oxide supported by a copper substrate (GO@copper).

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  • Analysis of C-O bond breaking, proton transfer, and oxygen migration pathways.

    • Main Results:

    • Significantly enhanced dynamic oxygen migration along the basal plane of GO on copper.
    • Reduced energy barriers for C-O bond breaking and proton transfer between epoxy and hydroxyl groups.
    • New oxygen migration pathways induced by the crystallographic match between GO and the copper substrate.

    Conclusions:

    • Metal substrates like copper can dramatically enhance the dynamic covalent properties of graphene oxide.
    • Lowered energy barriers make GO functional group reactions more feasible under ambient conditions.
    • This work provides a strategy for controlling interfacial oxygen group activity in 2D materials for advanced applications.