Obtaining of High Purity Amorphous Silicon Dioxide from Rice Husk

2016 ◽  
Vol 10 (4) ◽  
pp. 499-505 ◽  
Author(s):  
Tatiana Gridneva ◽  
◽  
Alexander Kravchenko ◽  
Vadim Barsky ◽  
Natalia Gurevina ◽  
...  
Keyword(s):  
Silicon Dioxide ◽  
Amorphous Silicon ◽  
Rice Husk ◽  
High Purity ◽  
Process Temperature ◽  
Solid Residue ◽  
Technological Factors ◽  
Amorphous Silicon Dioxide ◽  
Maximum Extraction ◽  
Temperature Time

Using maximum extraction of carbon-containing components the content of amorphous silicon dioxide was increased in the rice husk solid residue. In accordance with the hypothesis about the mechanism of extracting carbon-containing components from rice husk by liquid extractants, proper extractants were selected. The effect of main technological factors including process temperature, time and concentration of the extractants was determined.

X-ray induced luminescence of high-purity, amorphous silicon dioxide

1999 ◽  
Vol 86 (4) ◽  
pp. 2042-2050 ◽  
Author(s):  
A. J. Miller ◽  
R. G. Leisure ◽  
Wm. R. Austin
Keyword(s):  
Silicon Dioxide ◽  
Amorphous Silicon ◽  
High Purity ◽  
X Ray ◽  
Amorphous Silicon Dioxide

scholarly journals Сравнительный фотолюминесцентный анализ точечных дефектов в SiO-=SUB=-2-=/SUB=-, индуцированных имплантацией ионов Ar-=SUP=-+-=/SUP=- и облучением нейтронами

2019 ◽  
Vol 45 (5) ◽  
pp. 24
Author(s):  
И.П. Щербаков ◽  
А.Е. Чмель
Keyword(s):  
Silicon Dioxide ◽  
Amorphous Silicon ◽  
Point Defects ◽  
Photoluminescence Spectrum ◽  
Thermal Neutrons ◽  
Optical Transitions ◽  
Atomic Collisions ◽  
Amorphous Silicon Dioxide ◽  
Spectral Bands ◽  
Atomic Nuclei

AbstractThe introduction of Si^+ ions and ions of other elements into amorphous silicon dioxide during their interaction causes damage to the structural bonds, which is observed in the vibrational spectral bands. Pure SiO_2 has no optical transitions but the bands of induced point defects appear in the photoluminescence spectrum when ions/neutrons are introduced. The generation of photoluminescence-active defects by fluxes of Ar^+ ion and thermal neutrons is compared. It is shown that the nature of damage to the structure is associated with both the specifics of the synthesis/processing of the material and the features of the interaction between the substance and ions (atomic collisions) and neutrons (collisions with atomic nuclei).

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