Effect of Hydration Procedure of Fumed Silica Precursor on the Formation of Luminescent Carbon Centers in SiO2:C Nanocomposites

Marco Cannas, Lavinia Vaccaro, Volodymyr Lysenko, Alexei Nazarov, Dmytro Kysil, Stanislav Sevostianov, Oksana Isaieva, Dmytro Virnyi, Yuri P. Piryatinski, Galyna Rudko, Valentyn Tertykh, Andrii Vasin

Risultato della ricerca: Book/Film/Article review

1 Citazione (Scopus)

Abstract

The effect of hydration procedure of fumed silica precursor on photoluminescent properties of carbonized silica (SiO2:C) nanocomposite after chemo/thermal treatments is studied. Main structural effect is the formation of chemical bonding of phenyl groups to silica surface via multiple CSiO bonding bridges. Synthesized samples demonstrate very broad photoluminescence (PL) bands in near ultraviolet and visible ranges with maximum intensity dependent on temperature of thermal annealing. Two main trends in luminescence properties are: 1) hydration-induced blue shift of PL in comparison with PL of unhydrated series; 2) red shift of PL bands with increasing synthesis temperature regardless hydration procedure. Temperature dependent evolution of light emission bands is discussed in terms of surface carbon nanoclusters formation and aggregation processes. It is assumed that blue shift of PL bands in the hydrated series is associated with the decreased surface mobility of carbon atoms and clusters as a result of increased chemical bonding with silica surface that slows down carbon thermally stimulated clusterization/aggregation processes.
Lingua originaleEnglish
pagine (da-a)1800560-1-1800560-8
Numero di pagine8
RivistaPHYSICA STATUS SOLIDI. A, APPLICATIONS AND MATERIALS SCIENCE
Volume216
Stato di pubblicazionePublished - 2019

Fingerprint

Silicon Dioxide
Hydration
hydration
Nanocomposites
Photoluminescence
nanocomposites
Carbon
Silica
silicon dioxide
photoluminescence
carbon
blue shift
Agglomeration
Nanoclusters
Light emission
nanoclusters
red shift
Temperature
light emission
temperature

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films
  • Electrical and Electronic Engineering
  • Materials Chemistry

Cita questo

Effect of Hydration Procedure of Fumed Silica Precursor on the Formation of Luminescent Carbon Centers in SiO2:C Nanocomposites. / Cannas, Marco; Vaccaro, Lavinia; Lysenko, Volodymyr; Nazarov, Alexei; Kysil, Dmytro; Sevostianov, Stanislav; Isaieva, Oksana; Virnyi, Dmytro; Piryatinski, Yuri P.; Rudko, Galyna; Tertykh, Valentyn; Vasin, Andrii.

In: PHYSICA STATUS SOLIDI. A, APPLICATIONS AND MATERIALS SCIENCE, Vol. 216, 2019, pag. 1800560-1-1800560-8.

Risultato della ricerca: Book/Film/Article review

Cannas, M, Vaccaro, L, Lysenko, V, Nazarov, A, Kysil, D, Sevostianov, S, Isaieva, O, Virnyi, D, Piryatinski, YP, Rudko, G, Tertykh, V & Vasin, A 2019, 'Effect of Hydration Procedure of Fumed Silica Precursor on the Formation of Luminescent Carbon Centers in SiO2:C Nanocomposites', PHYSICA STATUS SOLIDI. A, APPLICATIONS AND MATERIALS SCIENCE, vol. 216, pagg. 1800560-1-1800560-8.
Cannas, Marco ; Vaccaro, Lavinia ; Lysenko, Volodymyr ; Nazarov, Alexei ; Kysil, Dmytro ; Sevostianov, Stanislav ; Isaieva, Oksana ; Virnyi, Dmytro ; Piryatinski, Yuri P. ; Rudko, Galyna ; Tertykh, Valentyn ; Vasin, Andrii. / Effect of Hydration Procedure of Fumed Silica Precursor on the Formation of Luminescent Carbon Centers in SiO2:C Nanocomposites. In: PHYSICA STATUS SOLIDI. A, APPLICATIONS AND MATERIALS SCIENCE. 2019 ; Vol. 216. pagg. 1800560-1-1800560-8.
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title = "Effect of Hydration Procedure of Fumed Silica Precursor on the Formation of Luminescent Carbon Centers in SiO2:C Nanocomposites",
abstract = "The effect of hydration procedure of fumed silica precursor on photoluminescent properties of carbonized silica (SiO2:C) nanocomposite after chemo/thermal treatments is studied. Main structural effect is the formation of chemical bonding of phenyl groups to silica surface via multiple CSiO bonding bridges. Synthesized samples demonstrate very broad photoluminescence (PL) bands in near ultraviolet and visible ranges with maximum intensity dependent on temperature of thermal annealing. Two main trends in luminescence properties are: 1) hydration-induced blue shift of PL in comparison with PL of unhydrated series; 2) red shift of PL bands with increasing synthesis temperature regardless hydration procedure. Temperature dependent evolution of light emission bands is discussed in terms of surface carbon nanoclusters formation and aggregation processes. It is assumed that blue shift of PL bands in the hydrated series is associated with the decreased surface mobility of carbon atoms and clusters as a result of increased chemical bonding with silica surface that slows down carbon thermally stimulated clusterization/aggregation processes.",
author = "Marco Cannas and Lavinia Vaccaro and Volodymyr Lysenko and Alexei Nazarov and Dmytro Kysil and Stanislav Sevostianov and Oksana Isaieva and Dmytro Virnyi and Piryatinski, {Yuri P.} and Galyna Rudko and Valentyn Tertykh and Andrii Vasin",
year = "2019",
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T1 - Effect of Hydration Procedure of Fumed Silica Precursor on the Formation of Luminescent Carbon Centers in SiO2:C Nanocomposites

AU - Cannas, Marco

AU - Vaccaro, Lavinia

AU - Lysenko, Volodymyr

AU - Nazarov, Alexei

AU - Kysil, Dmytro

AU - Sevostianov, Stanislav

AU - Isaieva, Oksana

AU - Virnyi, Dmytro

AU - Piryatinski, Yuri P.

AU - Rudko, Galyna

AU - Tertykh, Valentyn

AU - Vasin, Andrii

PY - 2019

Y1 - 2019

N2 - The effect of hydration procedure of fumed silica precursor on photoluminescent properties of carbonized silica (SiO2:C) nanocomposite after chemo/thermal treatments is studied. Main structural effect is the formation of chemical bonding of phenyl groups to silica surface via multiple CSiO bonding bridges. Synthesized samples demonstrate very broad photoluminescence (PL) bands in near ultraviolet and visible ranges with maximum intensity dependent on temperature of thermal annealing. Two main trends in luminescence properties are: 1) hydration-induced blue shift of PL in comparison with PL of unhydrated series; 2) red shift of PL bands with increasing synthesis temperature regardless hydration procedure. Temperature dependent evolution of light emission bands is discussed in terms of surface carbon nanoclusters formation and aggregation processes. It is assumed that blue shift of PL bands in the hydrated series is associated with the decreased surface mobility of carbon atoms and clusters as a result of increased chemical bonding with silica surface that slows down carbon thermally stimulated clusterization/aggregation processes.

AB - The effect of hydration procedure of fumed silica precursor on photoluminescent properties of carbonized silica (SiO2:C) nanocomposite after chemo/thermal treatments is studied. Main structural effect is the formation of chemical bonding of phenyl groups to silica surface via multiple CSiO bonding bridges. Synthesized samples demonstrate very broad photoluminescence (PL) bands in near ultraviolet and visible ranges with maximum intensity dependent on temperature of thermal annealing. Two main trends in luminescence properties are: 1) hydration-induced blue shift of PL in comparison with PL of unhydrated series; 2) red shift of PL bands with increasing synthesis temperature regardless hydration procedure. Temperature dependent evolution of light emission bands is discussed in terms of surface carbon nanoclusters formation and aggregation processes. It is assumed that blue shift of PL bands in the hydrated series is associated with the decreased surface mobility of carbon atoms and clusters as a result of increased chemical bonding with silica surface that slows down carbon thermally stimulated clusterization/aggregation processes.

UR - http://hdl.handle.net/10447/350346

UR - https://onlinelibrary.wiley.com/doi/10.1002/pssa.201800560

M3 - Book/Film/Article review

VL - 216

SP - 1800560-1-1800560-8

JO - Physica Status Solidi (A) Applications and Materials Science

JF - Physica Status Solidi (A) Applications and Materials Science

SN - 1862-6300

ER -