O2 Diffusion in Amorphous SiO2 Nanoparticles Probed by Outgassing

2012 ◽  
Vol 116 (20) ◽  
pp. 11351-11356 ◽  
Author(s):  
G. Iovino ◽  
S. Agnello ◽  
F. M. Gelardi ◽  
R. Boscaino
Keyword(s):  
Sio2 Nanoparticles ◽  
Amorphous Sio2 ◽  
O2 Diffusion

The effect of packing density on luminescence of amorphous SiO2 nanoparticles

2016 ◽  
Vol 120 (6) ◽  
pp. 922-925 ◽  
Author(s):  
Z. Sh. Shaymardanov ◽  
S. S. Kurbanov ◽  
R. Yu. Rakhimov
Keyword(s):  
Packing Density ◽  
Sio2 Nanoparticles ◽  
Amorphous Sio2

Synthesis and properties of amorphous SiO2 nanoparticles

2012 ◽  
Vol 48 (4) ◽  
pp. 355-360 ◽  
Author(s):  
V. S. Rimkevich ◽  
A. A. Pushkin ◽  
I. V. Girenko
Keyword(s):  
Sio2 Nanoparticles ◽  
Amorphous Sio2

Amorphous-SiO2 nanoparticles for water treatment materials

2020 ◽  
Author(s):  
Munasir Munasir ◽  
Nurul Hidayat ◽  
Diah Hari Kusumawati ◽  
Nugrahi Primary Putri ◽  
Ahmad Taufiq ◽  
...  
Keyword(s):  
Water Treatment ◽  
Sio2 Nanoparticles ◽  
Amorphous Sio2

Microstructural analysis of liquid and amorphous SiO2 nanoparticles

2008 ◽  
Vol 403 (18) ◽  
pp. 3199-3205 ◽  
Author(s):  
Nguyen Thi Xuan Huynh ◽  
Vo Van Hoang ◽  
Hoang Zung
Keyword(s):  
Microstructural Analysis ◽  
Sio2 Nanoparticles ◽  
Amorphous Sio2

Near-Infrared Emission of O2 Embedded in Amorphous SiO2 Nanoparticles

2011 ◽  
Vol 115 (26) ◽  
pp. 12831-12835 ◽  
Author(s):  
S. Agnello ◽  
M. Cannas ◽  
L. Vaccaro ◽  
G. Vaccaro ◽  
F. M. Gelardi ◽  
...  
Keyword(s):  
Near Infrared ◽  
Sio2 Nanoparticles ◽  
Infrared Emission ◽  
Amorphous Sio2 ◽  
Near Infrared Emission

scholarly journals Microstructures of SiO2 Scales Formed on MoSi2

2006 ◽  
Vol 522-523 ◽  
pp. 595-602 ◽  
Author(s):  
Kazuya Kurokawa ◽  
Daichi Goto ◽  
Jyunichi Kuchino ◽  
Akira Yamauchi ◽  
Tamaki Shibayama ◽  
...  
Keyword(s):  
Growth Rate ◽  
Diffusion Coefficient ◽  
Oxide Scale ◽  
Oxidation Rate ◽  
Diffusion Mechanism ◽  
Lattice Diffusion ◽  
Oxide Scales ◽  
Amorphous Sio2 ◽  
O2 Diffusion ◽  
Diffusion Coefficient Of Oxygen

The microstructures of oxide scales formed on MoSi2 at medium-high temperatures in air were observed by TEM. Based on the observation, relationships between oxidation temperature and formation of MoO3 and crystallization of amorphous SiO2 scales were investigated. At 1273 K and 1373 K, the oxide scales had a structure consisting of amorphous SiO2 with small amounts of fine MoO3 particles. The oxide scales at 1573 K and 1773 K had a structure consisting of amorphous and crystalline SiO2. Growth rate of the oxide scale formed at 1773 K appreciably increased due to crystallization of amorphous SiO2. It was thought that the increase in the oxidation rate at 1773 K was caused by a change in the diffusion mechanism from O2 diffusion to lattice diffusion of O2- through SiO2. In addition, the diffusion coefficient of oxygen was estimated from the growth rate of SiO2 scale.

Diffusive Equilibrium Properties of O2 in Amorphous SiO2 Nanoparticles Probed via Dependence of Concentration on Size and Pressure

2014 ◽  
Vol 118 (31) ◽  
pp. 18044-18050
Author(s):  
G. Iovino ◽  
S. Agnello ◽  
F. M. Gelardi ◽  
R. Boscaino
Keyword(s):  
Sio2 Nanoparticles ◽  
Amorphous Sio2

Interstitial O2 distribution in amorphous SiO2 nanoparticles determined by Raman and photoluminescence spectroscopy

2013 ◽  
Vol 114 (10) ◽  
pp. 104305 ◽  
Author(s):  
S. Agnello ◽  
D. Di Francesca ◽  
A. Alessi ◽  
G. Iovino ◽  
M. Cannas ◽  
...  
Keyword(s):  
Sio2 Nanoparticles ◽  
Photoluminescence Spectroscopy ◽  
Amorphous Sio2 ◽  
O2 Distribution
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