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Abstract <p>Graphene oxide (GO) and composites based on it are often used to produce graphene-like materials by thermal or chemical reduction, and the reduction method strongly affects the properties of the materials. In this study, a new method was proposed to prepare a conductive composite based on reduced graphene oxide (rGO) with magnetite nanoparticles (NPs) with an average diameter of 18 nm dispersed on its surface. The method consisted of treating a GO-based composite with Fe<sub>3</sub>O<sub>4</sub> on the its surface in supercritical isopropanol. The composites based on GO and rGO and magnetite NPs were investigated by FTIR spectroscopy, X-ray powder diffraction analysis, and scanning electron microscopy. It is shown that the sample compact film of the rGO-based composite has specific surface resistivity is 22 Ω cm<sup>–2</sup> and saturation magnetisation is 32.3 emu/g.</p>

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Preparation and Investigation of Composite Based on Reduced Graphene Oxide and Fe3O4 Nanoparticles

  • 期刊论文

  • 发表日期：

    2025年8月1日

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  • V. R. Ibragimova,
  • I. V. Sapkov,
  • E. I. Efremova,
  • Z. A. Kudryashova,
  • E. G. Rustamova,
  • D. V. Korolev,
  • E. I. Kunitsyna,
  • Yu. V. Ioni

摘要

Abstract

Graphene oxide (GO) and composites based on it are often used to produce graphene-like materials by thermal or chemical reduction, and the reduction method strongly affects the properties of the materials. In this study, a new method was proposed to prepare a conductive composite based on reduced graphene oxide (rGO) with magnetite nanoparticles (NPs) with an average diameter of 18 nm dispersed on its surface. The method consisted of treating a GO-based composite with Fe3O4 on the its surface in supercritical isopropanol. The composites based on GO and rGO and magnetite NPs were investigated by FTIR spectroscopy, X-ray powder diffraction analysis, and scanning electron microscopy. It is shown that the sample compact film of the rGO-based composite has specific surface resistivity is 22 Ω cm–2 and saturation magnetisation is 32.3 emu/g.