Structure and Properties of Sio<sub>2</sub> Nanopowder Obtained From High-Silica Raw Materials by Plasma Method

Abstract

The paper presents a plasma-assisted generation of nanodisperse powder obtained from diatomite, a natural high-silica material. The structure and properties of the obtained material are investigated using the transmission electron microscopy, energy dispersive X-Ray spectroscopy, infrared and X-ray photoelectron spectroscopies, and Brunauer–Emmett–Teller method. It is clearly shown that the obtained SiO₂ nanoparticles are spherical, polydisperse and represented in the form of agglomerates. The specific surface of this nanopowder is 32 m²/g. Thermodynamic modeling of the plasma-assisted process is used to obtain the equilibrium compositions of condensed and gaseous reaction products. The plasma process is performed within the 300–5000 K temperature range.

Original language	English
Pages (from-to)	1-5
Number of pages	5
Journal	Russian Physics Journal
DOIs	https://doi.org/10.1007/s11182-017-1068-9
Publication status	Accepted/In press - 31 May 2017

Keywords

equilibrium composition
plasma method
SiO nanopowder
sublimation
thermodynamic modeling

ASJC Scopus subject areas

Physics and Astronomy(all)

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10.1007/s11182-017-1068-9

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title = "Structure and Properties of Sio2 Nanopowder Obtained From High-Silica Raw Materials by Plasma Method",

abstract = "The paper presents a plasma-assisted generation of nanodisperse powder obtained from diatomite, a natural high-silica material. The structure and properties of the obtained material are investigated using the transmission electron microscopy, energy dispersive X-Ray spectroscopy, infrared and X-ray photoelectron spectroscopies, and Brunauer–Emmett–Teller method. It is clearly shown that the obtained SiO2 nanoparticles are spherical, polydisperse and represented in the form of agglomerates. The specific surface of this nanopowder is 32 m2/g. Thermodynamic modeling of the plasma-assisted process is used to obtain the equilibrium compositions of condensed and gaseous reaction products. The plasma process is performed within the 300–5000 K temperature range.",

keywords = "equilibrium composition, plasma method, SiO nanopowder, sublimation, thermodynamic modeling",

author = "Kosmachev, {P. V.} and Vlasov, {V. A.} and Skripnikova, {N. K.}",

year = "2017",

month = may,

day = "31",

doi = "10.1007/s11182-017-1068-9",

language = "English",

pages = "1--5",

journal = "Russian Physics Journal",

issn = "1064-8887",

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T1 - Structure and Properties of Sio2 Nanopowder Obtained From High-Silica Raw Materials by Plasma Method

AU - Kosmachev, P. V.

AU - Vlasov, V. A.

AU - Skripnikova, N. K.

PY - 2017/5/31

Y1 - 2017/5/31

N2 - The paper presents a plasma-assisted generation of nanodisperse powder obtained from diatomite, a natural high-silica material. The structure and properties of the obtained material are investigated using the transmission electron microscopy, energy dispersive X-Ray spectroscopy, infrared and X-ray photoelectron spectroscopies, and Brunauer–Emmett–Teller method. It is clearly shown that the obtained SiO2 nanoparticles are spherical, polydisperse and represented in the form of agglomerates. The specific surface of this nanopowder is 32 m2/g. Thermodynamic modeling of the plasma-assisted process is used to obtain the equilibrium compositions of condensed and gaseous reaction products. The plasma process is performed within the 300–5000 K temperature range.

AB - The paper presents a plasma-assisted generation of nanodisperse powder obtained from diatomite, a natural high-silica material. The structure and properties of the obtained material are investigated using the transmission electron microscopy, energy dispersive X-Ray spectroscopy, infrared and X-ray photoelectron spectroscopies, and Brunauer–Emmett–Teller method. It is clearly shown that the obtained SiO2 nanoparticles are spherical, polydisperse and represented in the form of agglomerates. The specific surface of this nanopowder is 32 m2/g. Thermodynamic modeling of the plasma-assisted process is used to obtain the equilibrium compositions of condensed and gaseous reaction products. The plasma process is performed within the 300–5000 K temperature range.

KW - equilibrium composition

KW - plasma method

KW - SiO nanopowder

KW - sublimation

KW - thermodynamic modeling

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