Structure and properties of self-assembled graphene oxide–detonation nanodiamond composites

Abstract

The properties of graphene oxide–detonation nanodiamond composites obtained as a result of heterocoagulation of graphene oxide and hydrogenated detonation nanodiamonds in aqueous mixtures were studied. The resulting composites with different proportions of graphene oxide and detonation nanodiamond were subjected to drying and subsequent heat treatment in a vacuum, converting graphene oxide into graphene. The structure of the composites was studied using electron microscopy and Raman spectroscopy. The specific surface area and porosity of the obtained samples were studied by analyzing nitrogen adsorption isotherms. A model for the composite formation and a possible technology for producing a material based on it with different specific surface area values and pore structure are proposed. It is shown, that the largest possible specific surface area of two-component structures of the «DND/GO» type does not exceed 500 m²·g⁻¹. It was also concluded that it is necessary to achieve a uniform distribution of detonation nanodiamond particles over the surface of graphene sheets.

Keywords:

• Graphene oxide
• detonation nanodiamond
• self-assembled structure
• porous material

Acknowledgments

Authors are grateful to Alexandr Shvidchenko for valuable methodological advice and comments on the first draft of the article, as well as SvetlanaVul’ for carrying out the treatment in carbon dioxide. A.D. Trofimuk is grateful to Maxim Rabchinskii for valuable recommendations in the early stages of this study.

Disclosure statement

No potential conflict of interest was reported by the author(s).

Additional information

Funding

Research was supported by the Ioffe Institute program FFUG-2024-0019. Е.Yu. Stovpiaga thanks the Russian Science Foundation, grant No. 23-79-00018.