Abstract
A method for the synthesis of metal–carbon nanocomposites in which metal-centered particles of the core–graphite-like shell type are distributed in the bulk of an amorphous sp2-carbon matrix is proposed. Polyvinyl chloride (PVC) was used as a carbon matrix precursor. The synthesis procedure included the following stages: The dehydrochlorination of PVC with diethylamine in a dimethyl sulfoxide solution in the presence of Co, Ni, Fe, or Cu nitrates; the carbonization of the product at 400°C; metal reduction with hydrogen at 500–620°C; and methane conversion at 620–850°C. The metal concentrations in the resulting composites were the following (%): Fe, 10; Ni, 10.8; Co, 11; and Cu, 21. The structure of the final metal–carbon nanocomposites was studied by transmission electron microscopy. The size of a metal core was 20–100 nm, and the number of graphene layers in a shell was to 50.
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Notes
Analytical Instruments of the Omsk Regional Center of Collective Use of the Siberian Branch of the Russian Academy of Sciences were used in this study.
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ACKNOWLEDGMENTS
We are grateful to M.V. Erokhina and A.A. Kovaleva (students of the Omsk State University) for their participation in the experiments.
Funding
This work was carried out at the Institute of Hydrocarbon Processing, Siberian Branch, Russian Academy of Sciences within the framework of a state contract in accordance with the Program of Fundamental Scientific Research of State Academies of Sciences for 2013–2020 (project no. V.45.2.8, state registration no. АААА-А19-119050790074-9).
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Translated by V. Makhlyarchuk
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Kryazhev, Y.G., Anikeeva, I.V., Trenikhin, M.V. et al. Synthesis of Metal–Carbon Composites with Transition Metal Nanoparticles Distributed as Metal Core–Graphite-Like Shell Structures in the Bulk of an Amorphous Carbon Matrix. Solid Fuel Chem. 53, 289–293 (2019). https://doi.org/10.3103/S0361521919050069
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DOI: https://doi.org/10.3103/S0361521919050069