Abstract
The effect of thermal treatment on the structural arrangement and pore size distribution in NiFe2O4/reduced graphene oxide composite materials has been studied using X-ray diffraction, Mössbauer spectroscopy, and nitrogen adsorption/desorption technique. Composite materials have been successfully synthesized by the joint hydrothermal method using graphene oxide colloidal solution obtained by the modified Tour method. The electrical properties of the composite materials, as well as the pure component, have been studied in the frequency range from 0.1 Hz to 1 MHz, in the temperature range from 25 to 175 °C using impedance spectroscopy. A synergetic increase in the electrical conductivity of composite materials compared to pure components has been observed. The activation energies of interparticle hop** of charge carriers have been calculated using Arrhenius-type conductivity plots.
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Data availability
The datasets generated during and/or analyzed during the current study are available in the Repository of Vasyl Stefanyk Precarpathian National University, http://lib.pnu.edu.ua:8080/?locale=en. The datasets generated during and/or analyzed during the current study are available from the corresponding author on reasonable request.
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Acknowledgements
This work was supported by the National Research Foundation of Ukraine (project 2020.02/0043). Some results of the work were previously presented at the 9th International Conference “Nanotechnologies and Nanomaterials” NANO-2021.
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This study was funded by the National Research Foundation of Ukraine (project 2020.02/0043).
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Hodlevska, M., Kotsyubynsky, V., Boychuk, V. et al. Hydrothermally synthesized NiFe2O4/rGO composites: structure, morphology and electrical conductivity. Appl Nanosci 13, 5199–5209 (2023). https://doi.org/10.1007/s13204-022-02741-x
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DOI: https://doi.org/10.1007/s13204-022-02741-x