Reduced graphene oxide fiber confined fe3o4 nanoparticle composite and preparation method thereof

By preparing a composite material of Fe3O4 nanoparticles confined to reduced graphene oxide fibers with directional micro-nano strip structures, the problem of random distribution of Fe3O4 nanoparticles in the graphene matrix was solved, achieving stable interfacial bonding and multifunctional integration, which is suitable for magnetic resonance imaging and electromagnetic wave absorption.

CN122624698APending Publication Date: 2026-08-25JILIN UNIVERSITY
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Patent Information

Application Number
CN202610751962.3
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-05-28
Publication Date
2026-08-25

AI Technical Summary

Technical Problem

In existing technologies, Fe3O4 nanoparticles are randomly distributed in the graphene matrix, their aggregation state is difficult to control precisely, and their interfacial bonding is unstable, making it difficult to meet the needs of modern integrated diagnosis and treatment.

Method used

By preparing a composite material of Fe3O4 nanoparticles confined to reduced graphene oxide fibers with oriented micro-nano strip structures, the Fe3O4 nanoparticles are arranged in an orderly manner along the fiber axis and form a stable interface bond with the reduced graphene oxide fibers through Fe-OC covalent bonds.

Benefits of technology

It achieves strong anchoring of Fe3O4 nanoparticles on a carbon matrix, and the composite material has good structural stability. It is suitable for magnetic resonance imaging contrast agents and electromagnetic wave absorbing materials, and has multifunctional integration capabilities.

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Abstract

The application relates to a reduced graphene oxide fiber confined Fe3O4 nanoparticle composite material and a preparation method thereof. The composite material is composed of reduced graphene oxide fiber (rGOF) with a directional micro-nanobelt structure (a large number of long strip / belt structures with a width in the micron to nanometer scale are arranged in parallel along the same direction on the surface or inside the material) and Fe3O4 nanoparticles confined on the reduced graphene oxide fiber; the Fe3O4 nanoparticles are distributed in an ordered chain shape along the axial direction of the reduced graphene oxide fiber; the Fe3O4 nanoparticles and the reduced graphene oxide fiber are stably combined through Fe-O-C covalent bonds, and the application has the advantages that one-dimensional confined structure-induced ordered arrangement is realized, the synthesis process is optimized, the stable Fe-O-C covalent bond between Fe3O4 and the rGO skeleton is formed, the interface structure stability and the magnetic coupling efficiency are ensured, and the application has wide application prospects in the biomedical field.
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