Formation and Luminescent Properties of Al^sub 2^O3:SiOC Nanocomposites on the Base of Alumina Nanoparticles Modified by Phenyltrimethoxysilane

Formation and Luminescent Properties of Al^sub 2^O3:SiOC Nanocomposites on the Base of Alumina Nanoparticles Modified by Phenyltrimethoxysilane

Al2O3:SiOC nanocomposites were synthesized by thermal treatment of fumed alumina nanoparticles modified by phenyltrimethoxysilane. The effect of annealing temperature in inert ambient on structure and photoluminescence of modified alumina powder was studied by IR spectroscopy as well as photolumines...

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Veröffentlicht in:Nanoscale research letters 2017-08, Vol.12 (1), p.1
Hauptverfasser: Kysil, D V, Vasin, A V, Sevostianov, S V, Degoda, V Ya, Strelchuk, V V, Naseka, V M, Piryatinski, Yu P, Tertykh, V A, Nazarov, A N, Lysenko, V S
Format: Artikel
Sprache:eng
Schlagworte:
Aluminum
Aluminum oxide
Annealing
Heat treatment
Infrared spectroscopy
Luminescence
Nanocomposites
Nanoparticles
Optical properties
Photoluminescence
Photons
Powder
Precipitates
Silica
Silicon dioxide
Spectrum analysis
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Zusammenfassung:Al2O3:SiOC nanocomposites were synthesized by thermal treatment of fumed alumina nanoparticles modified by phenyltrimethoxysilane. The effect of annealing temperature in inert ambient on structure and photoluminescence of modified alumina powder was studied by IR spectroscopy as well as photoluminescence spectroscopy with ultraviolet and X-ray excitation. It is demonstrated that increase of annealing temperature results in formation of silica precipitates on the surface of alumina particles that is accompanied by development and spectral evolution of visible photoluminescence. These observations are discussed in terms of structural transformation of the surface of Al2O3 particles.
ISSN:1931-7573
1556-276X
DOI:10.1186/s11671-017-2245-z