Formation mechanism of MgO hollow nanospheres via calcination of C-MgO composite produced by electric arc spraying

Dmitry V. Smovzh; Salavat Z. Sakhapov; Alexey V. Zaikovskii; Svetlana A. Chernova; Sergey A. Novopashin

doi:10.1016/j.ceramint.2019.01.017

Formation mechanism of MgO hollow nanospheres via calcination of C-MgO composite produced by electric arc spraying

Dmitry V. Smovzh, Salavat Z. Sakhapov, Alexey V. Zaikovskii, Svetlana A. Chernova, Sergey A. Novopashin

General Physics Section

Research output: Contribution to journal › Article › peer-review

5 Citations (Scopus)

Abstract

Spherical MgO nanoparticles were obtained using the method of electric arc spraying of the Mg-C composite electrode, followed by calcination in air. The composition and morphology of nanostructures, formed at spraying, were studied; kinetics of changes in the elemental composition of the carbon-magnesium composite was investigated at annealing in the range of up to 900 °C. It is shown that during arc spraying, core-shell nanoparticles are formed with a carbon core and shell enriched with magnesium nanoparticles, which are oxidized to MgO at contact with the atmosphere. When carbon-magnesium composites are annealed, carbon burns out; the morphology of magnesium oxide nanoparticles is a 250-nm sphere of magnesium crystals of 20–30 nm in size.

Original language	English
Pages (from-to)	7338-7343
Number of pages	6
Journal	Ceramics International
Volume	45
Issue number	6
DOIs	https://doi.org/10.1016/j.ceramint.2019.01.017
Publication status	Published - 15 Apr 2019

Keywords

Arc discharge
Calcination
Condensation
MgO
Nanoceramics
Nucleation
Powders
PERFORMANCE
ADSORBENTS
GRAPHENE
NANOCRYSTALLINE MAGNESIUM-OXIDE
NANOSTRUCTURES
CO2 CAPTURE
NANOPARTICLES
REFRACTORIES
RAPID SYNTHESIS
MORPHOLOGY

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@article{e039a39dfedc4f53b57fe9365e63047c,

title = "Formation mechanism of MgO hollow nanospheres via calcination of C-MgO composite produced by electric arc spraying",

abstract = "Spherical MgO nanoparticles were obtained using the method of electric arc spraying of the Mg-C composite electrode, followed by calcination in air. The composition and morphology of nanostructures, formed at spraying, were studied; kinetics of changes in the elemental composition of the carbon-magnesium composite was investigated at annealing in the range of up to 900 °C. It is shown that during arc spraying, core-shell nanoparticles are formed with a carbon core and shell enriched with magnesium nanoparticles, which are oxidized to MgO at contact with the atmosphere. When carbon-magnesium composites are annealed, carbon burns out; the morphology of magnesium oxide nanoparticles is a 250-nm sphere of magnesium crystals of 20–30 nm in size.",

keywords = "Arc discharge, Calcination, Condensation, MgO, Nanoceramics, Nucleation, Powders, PERFORMANCE, ADSORBENTS, GRAPHENE, NANOCRYSTALLINE MAGNESIUM-OXIDE, NANOSTRUCTURES, CO2 CAPTURE, NANOPARTICLES, REFRACTORIES, RAPID SYNTHESIS, MORPHOLOGY",

author = "Smovzh, {Dmitry V.} and Sakhapov, {Salavat Z.} and Zaikovskii, {Alexey V.} and Chernova, {Svetlana A.} and Novopashin, {Sergey A.}",

year = "2019",

month = apr,

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doi = "10.1016/j.ceramint.2019.01.017",

language = "English",

volume = "45",

pages = "7338--7343",

journal = "Ceramics International",

issn = "0272-8842",

publisher = "Elsevier",

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TY - JOUR

T1 - Formation mechanism of MgO hollow nanospheres via calcination of C-MgO composite produced by electric arc spraying

AU - Smovzh, Dmitry V.

AU - Sakhapov, Salavat Z.

AU - Zaikovskii, Alexey V.

AU - Chernova, Svetlana A.

AU - Novopashin, Sergey A.

PY - 2019/4/15

Y1 - 2019/4/15

N2 - Spherical MgO nanoparticles were obtained using the method of electric arc spraying of the Mg-C composite electrode, followed by calcination in air. The composition and morphology of nanostructures, formed at spraying, were studied; kinetics of changes in the elemental composition of the carbon-magnesium composite was investigated at annealing in the range of up to 900 °C. It is shown that during arc spraying, core-shell nanoparticles are formed with a carbon core and shell enriched with magnesium nanoparticles, which are oxidized to MgO at contact with the atmosphere. When carbon-magnesium composites are annealed, carbon burns out; the morphology of magnesium oxide nanoparticles is a 250-nm sphere of magnesium crystals of 20–30 nm in size.

AB - Spherical MgO nanoparticles were obtained using the method of electric arc spraying of the Mg-C composite electrode, followed by calcination in air. The composition and morphology of nanostructures, formed at spraying, were studied; kinetics of changes in the elemental composition of the carbon-magnesium composite was investigated at annealing in the range of up to 900 °C. It is shown that during arc spraying, core-shell nanoparticles are formed with a carbon core and shell enriched with magnesium nanoparticles, which are oxidized to MgO at contact with the atmosphere. When carbon-magnesium composites are annealed, carbon burns out; the morphology of magnesium oxide nanoparticles is a 250-nm sphere of magnesium crystals of 20–30 nm in size.

KW - Arc discharge

KW - Calcination

KW - Condensation

KW - MgO

KW - Nanoceramics

KW - Nucleation

KW - Powders

KW - PERFORMANCE

KW - ADSORBENTS

KW - GRAPHENE

KW - NANOCRYSTALLINE MAGNESIUM-OXIDE

KW - NANOSTRUCTURES

KW - CO2 CAPTURE

KW - NANOPARTICLES

KW - REFRACTORIES

KW - RAPID SYNTHESIS

KW - MORPHOLOGY

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U2 - 10.1016/j.ceramint.2019.01.017

DO - 10.1016/j.ceramint.2019.01.017

M3 - Article

AN - SCOPUS:85060230697

VL - 45

SP - 7338

EP - 7343

JO - Ceramics International

JF - Ceramics International

SN - 0272-8842

IS - 6

ER -