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

被引:8
|
作者
Ualkhanova, Marzhan N. N. [1 ,2 ]
Zhakypov, Alibek S. S. [1 ,2 ]
Nemkayeva, Renata R. R. [1 ,2 ]
Aitzhanov, Madi B. B. [2 ]
Kurbanov, Beybars Y. Y. [1 ,2 ]
Akhanova, Nazym Ye. [1 ,3 ]
Yerlanuly, Yerassyl [1 ,2 ,3 ]
Orazbayev, Sagi A. A. [2 ,3 ]
Shchur, Dmytro [1 ,4 ]
Zolotarenko, Anatolii [4 ]
Gabdullin, Maratbek T. T. [1 ]
机构
[1] Kazakh British Tech Univ, 59 Tole Bi, Alma Ata 050000, Kazakhstan
[2] Al Farabi Kazakh Natl Univ, 71 Al Farabi Ave, Alma Ata 050040, Kazakhstan
[3] Inst Appl Sci & Informat Technol, Shashkina 40-48, Alma Ata 050038, Kazakhstan
[4] NASU, Frantsevich Inst Problems Mat Sci, 3 Krzhyzhanovsky Str, UA-03142 Kiev, Ukraine
关键词
micro- and nanoparticles; graphene encapsulation; X-ray diffraction; Raman spectroscopy; scanning electron microscopy; NICKEL NANOPARTICLES; MAGNETIC-PROPERTIES; CARBON; BENZENE; TOLUENE; METAL; MECHANISMS; CONVERSION; PYROLYSIS; CATALYST;
D O I
10.3390/en16031450
中图分类号
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号
0807 ; 0820 ;
摘要
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.
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页数:9
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