Synthesis of Graphite-Encapsulated Ni Micro- and Nanoparticles Using Liquid-Phase Arc Discharge

Marzhan N. Ualkhanova, Alibek S. Zhakypov, Renata R. Nemkayeva, Madi B. Aitzhanov, Beybars Y. Kurbanov, Nazym Ye. Akhanova, Yerassyl Yerlanuly (), Sagi A. Orazbayev, Dmytro Shchur, Anatolii Zolotarenko and Maratbek T. Gabdullin ()
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Marzhan N. Ualkhanova: Kazakh-British Technical University, 59 Tole Bi, Almaty 050000, Kazakhstan
Alibek S. Zhakypov: Kazakh-British Technical University, 59 Tole Bi, Almaty 050000, Kazakhstan
Renata R. Nemkayeva: Kazakh-British Technical University, 59 Tole Bi, Almaty 050000, Kazakhstan
Madi B. Aitzhanov: Al-Farabi Kazakh National University, 71 Al-Farabi Av., Almaty 050040, Kazakhstan
Beybars Y. Kurbanov: Kazakh-British Technical University, 59 Tole Bi, Almaty 050000, Kazakhstan
Nazym Ye. Akhanova: Kazakh-British Technical University, 59 Tole Bi, Almaty 050000, Kazakhstan
Yerassyl Yerlanuly: Kazakh-British Technical University, 59 Tole Bi, Almaty 050000, Kazakhstan
Sagi A. Orazbayev: Al-Farabi Kazakh National University, 71 Al-Farabi Av., Almaty 050040, Kazakhstan
Dmytro Shchur: Kazakh-British Technical University, 59 Tole Bi, Almaty 050000, Kazakhstan
Anatolii Zolotarenko: Frantsevich Institute for Problems of Materials Science of NASU, 3, Krzhyzhanovsky Str., 03142 Kyiv, Ukraine
Maratbek T. Gabdullin: Kazakh-British Technical University, 59 Tole Bi, Almaty 050000, Kazakhstan

Energies, 2023, vol. 16, issue 3, 1-9

Abstract: In this work, the synthesis of nickel particles encapsulated in a few-layer graphene shell was carried out using the method of electric arc discharge in the liquid phase, in various media: deionized water, alcohol, and toluene. Nickel and graphite were used as electrodes. The study was carried out to analyze how various liquids, acting as a cooling medium and a source of carbon, affect the formation of a protective shell around metal particles. Raman studies, analysis of X-ray diffraction data, and scanning electron microscopy confirmed the formation of spherical encapsulated nickel particles in all types of liquid media. It was found out that the use of toluene as a cooling medium increased the number of particles with a graphite shell and allowed obtaining micro- and nanoparticles covered with monolayer graphene. The absence of oxygen in the composition of toluene, in contrast with alcohol and especially water, prevents the oxidation of nickel particles during the synthesis. This fact, along with the initial basic hexagonal carbon structure of toluene, makes it a good medium for the formation of metal particles covered with a protecting graphite shell as a result of arc discharge in the liquid phase.

Keywords: micro- and nanoparticles; graphene encapsulation; X-ray diffraction; Raman spectroscopy; scanning electron microscopy (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2023
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