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Statements

Subject Item
n2:RIV%2F61989100%3A27640%2F13%3A86084575%21RIV14-MSM-27640___
rdf:type
n13:Vysledek skos:Concept
dcterms:description
The photoactive quartz sand/TiO2 composites were prepared by thermal hydrolysis of the suspension obtained by addition of quartz sand to a titanyl sulfate solution. The required amount of TiO2 in the prepared composites (i.e 9, 22 and 45 wt. %, respectively) was achieved using a variable titanyl sulfate/quartz ratio. As reference materials, pure TiO2 was prepared using the thermal hydrolysis of the titanyl sulfate solution under the same condition as used during the preparation of composite quartz/TiO2. The composite samples, dried at 105°C and calcined at temperatures of 500-900°C, were investigated using X-ray fluorescence spectroscopy, X-ray powder diffraction analysis, transmission electron microscopy, and Fourier transform infrared spectroscopy. Structural ordering of TiO2 particles on the quartz surface was studied using atomistic simulations in a Material Studio modeling environment. Photodegradation activity of the composites was evaluated by the discoloration of Acid Orange 7 aqueous solution. The composite containing 22 wt.% of TiO2 and calcined at 800°C exhibits the highest photoactivity. Higher and lower amounts of TiO2 led to worse results. The quartz/TiO2 composite is a promising material able to replace pure TiO2 in a wide range of building materials. The photoactive quartz sand/TiO2 composites were prepared by thermal hydrolysis of the suspension obtained by addition of quartz sand to a titanyl sulfate solution. The required amount of TiO2 in the prepared composites (i.e 9, 22 and 45 wt. %, respectively) was achieved using a variable titanyl sulfate/quartz ratio. As reference materials, pure TiO2 was prepared using the thermal hydrolysis of the titanyl sulfate solution under the same condition as used during the preparation of composite quartz/TiO2. The composite samples, dried at 105°C and calcined at temperatures of 500-900°C, were investigated using X-ray fluorescence spectroscopy, X-ray powder diffraction analysis, transmission electron microscopy, and Fourier transform infrared spectroscopy. Structural ordering of TiO2 particles on the quartz surface was studied using atomistic simulations in a Material Studio modeling environment. Photodegradation activity of the composites was evaluated by the discoloration of Acid Orange 7 aqueous solution. The composite containing 22 wt.% of TiO2 and calcined at 800°C exhibits the highest photoactivity. Higher and lower amounts of TiO2 led to worse results. The quartz/TiO2 composite is a promising material able to replace pure TiO2 in a wide range of building materials.
dcterms:title
A low-cost photoactive composite quartz sand/TiO2 A low-cost photoactive composite quartz sand/TiO2
skos:prefLabel
A low-cost photoactive composite quartz sand/TiO2 A low-cost photoactive composite quartz sand/TiO2
skos:notation
RIV/61989100:27640/13:86084575!RIV14-MSM-27640___
n13:predkladatel
n16:orjk%3A27640
n3:aktivita
n17:I n17:S n17:P
n3:aktivity
I, P(ED1.1.00/02.0070), S
n3:cisloPeriodika
25.3.2013
n3:dodaniDat
n19:2014
n3:domaciTvurceVysledku
n6:9404252 n6:3359174 n6:8173168 n6:1355384 n6:5718287
n3:druhVysledku
n15:J
n3:duvernostUdaju
n20:S
n3:entitaPredkladatele
n5:predkladatel
n3:idSjednocenehoVysledku
58698
n3:idVysledku
RIV/61989100:27640/13:86084575
n3:jazykVysledku
n10:eng
n3:klicovaSlova
photoactivity; nanocomposite; TiO2; quartz sand
n3:klicoveSlovo
n11:photoactivity n11:nanocomposite n11:quartz%20sand n11:TiO2
n3:kodStatuVydavatele
BE - Belgické království
n3:kontrolniKodProRIV
[C16E54608BD0]
n3:nazevZdroje
Chemical engineering journal
n3:obor
n18:JI
n3:pocetDomacichTvurcuVysledku
5
n3:pocetTvurcuVysledku
7
n3:projekt
n4:ED1.1.00%2F02.0070
n3:rokUplatneniVysledku
n19:2013
n3:svazekPeriodika
222
n3:tvurceVysledku
Vontorová, Jiřina Tokarský, Jonáš Mamulová Kutláková, Kateřina Neuwirthová, Lucie Čapková, Pavla Matějka, Vlastimil Kukutschová, Jana
n3:wos
000319528900055
s:issn
1385-8947
s:numberOfPages
10
n8:doi
10.1016/j.cej.2013.02.056
n12:organizacniJednotka
27640