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Statements

Subject Item
n2:RIV%2F61389013%3A_____%2F15%3A00439965%21RIV15-GA0-61389013
rdf:type
skos:Concept n12:Vysledek
dcterms:description
In the present work, we have studied for the first time the combined effect of both sonication and precipitation pH on the structure of amorphous zirconia gels synthesized from zirconium(IV) propoxide. The techniques of small-angle neutron and X-ray scattering (SANS and SAXS) and low temperature nitrogen adsorption provided the integral data on the changes in the microstructure and mesostructure of these materials caused by ultrasonic (US) treatment. Amorphous ZrO2xH2O synthesized under ultrasonic treatment was found to possess a very structured surface, characterized by the surface fractal dimension 2.9–3.0, compared to 2.3–2.5 for the non US-assisted synthesis, and it was also found to possess a higher specific surface area, while the sizes of the primary particles remain unchanged. In the present work, we have studied for the first time the combined effect of both sonication and precipitation pH on the structure of amorphous zirconia gels synthesized from zirconium(IV) propoxide. The techniques of small-angle neutron and X-ray scattering (SANS and SAXS) and low temperature nitrogen adsorption provided the integral data on the changes in the microstructure and mesostructure of these materials caused by ultrasonic (US) treatment. Amorphous ZrO2xH2O synthesized under ultrasonic treatment was found to possess a very structured surface, characterized by the surface fractal dimension 2.9–3.0, compared to 2.3–2.5 for the non US-assisted synthesis, and it was also found to possess a higher specific surface area, while the sizes of the primary particles remain unchanged.
dcterms:title
Combined SANS and SAXS study of the action of ultrasound on the structure of amorphous zirconia gels Combined SANS and SAXS study of the action of ultrasound on the structure of amorphous zirconia gels
skos:prefLabel
Combined SANS and SAXS study of the action of ultrasound on the structure of amorphous zirconia gels Combined SANS and SAXS study of the action of ultrasound on the structure of amorphous zirconia gels
skos:notation
RIV/61389013:_____/15:00439965!RIV15-GA0-61389013
n3:aktivita
n8:I n8:P
n3:aktivity
I, P(GAP208/10/1600)
n3:cisloPeriodika
May
n3:dodaniDat
n16:2015
n3:domaciTvurceVysledku
Angelov, Borislav
n3:druhVysledku
n11:J
n3:duvernostUdaju
n4:S
n3:entitaPredkladatele
n9:predkladatel
n3:idSjednocenehoVysledku
73
n3:idVysledku
RIV/61389013:_____/15:00439965
n3:jazykVysledku
n13:eng
n3:klicovaSlova
zirconia; ultrasonication; fractals
n3:klicoveSlovo
n5:zirconia n5:fractals n5:ultrasonication
n3:kodStatuVydavatele
GB - Spojené království Velké Británie a Severního Irska
n3:kontrolniKodProRIV
[71BE0D951838]
n3:nazevZdroje
Ultrasonics Sonochemistry
n3:obor
n17:CF
n3:pocetDomacichTvurcuVysledku
1
n3:pocetTvurcuVysledku
8
n3:projekt
n14:GAP208%2F10%2F1600
n3:rokUplatneniVysledku
n16:2015
n3:svazekPeriodika
24
n3:tvurceVysledku
Almásy, L. Baranchikov, A. Y. Ivanov, V. K. Rosta, L. Yapryntsev, A. D. Angelov, Borislav Gubanova, N. N. Kopitsa, G. P.
n3:wos
000349726500030
s:issn
1350-4177
s:numberOfPages
8
n15:doi
10.1016/j.ultsonch.2014.11.012