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Article

TiO2 Modified Geopolymers for the Photocatalytic Dye Decomposition

1
Department of Material Structure and Properties, Institute of Rock Structure and Mechanics, Czech Academy of Sciences, V Holešovičkách 94/41, 18209 Prague 8, Czech Republic
2
Department of Glass and Ceramics, University of Chemistry and Technology Prague, Technická 5, 16628 Prague 6, Czech Republic
3
Department of General and Inorganic Chemistry, Faculty of Chemical Technology, University of Pardubice, Studentská 573, 53210 Pardubice, Czech Republic
4
Joint Laboratory of Solid State Chemistry, Faculty of Chemical Technology, University of Pardubice, Studentská 84, 53210 Pardubice, Czech Republic
5
Synpo, a.s., S. K. Neumanna 1316, 53207 Pardubice, Czech Republic
*
Author to whom correspondence should be addressed.
Academic Editors: Luís G. Baltazar and Shima Pilehvar
Crystals 2021, 11(12), 1511; https://doi.org/10.3390/cryst11121511
Received: 5 November 2021 / Revised: 24 November 2021 / Accepted: 1 December 2021 / Published: 3 December 2021
(This article belongs to the Special Issue Geopolymer Composites)
This article studies the photocatalytic activity of three types of industrially produced TiO2 powder (P25, CG100 and CG300) incorporated into a parent geopolymer matrix, and their pure counterparts, based on the decomposition of Rhodamine B dye. Rhodamine B dye is applied as a model substance because it is frequently used in the textile industry and thus may be present in the wastewater. The average particle size, specific surface area and mineralogical composition of TiO2 powders have been determined. The geopolymer matrix works well as a supporting material for the CG100 and P25 pure types of TiO2 powder as these input materials have better properties such as a higher average particle size, lower specific surface area, mineralogicalcomposition, etc., than the CG300 TiO2 powder. These properties (or their combination) affect the photocatalytic activity of the resulting materials, which may thus become advanced composites with an additional purifying ability, e.g., materials that can be used for wastewater treatment or air purification. View Full-Text
Keywords: geopolymer; TiO2; dye decomposition; photocatalytic activity geopolymer; TiO2; dye decomposition; photocatalytic activity
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MDPI and ACS Style

Novotná, M.; Knotek, P.; Hanzlíček, T.; Kutálek, P.; Perná, I.; Melánová, K.; Černošková, E.; Kopecká, K. TiO2 Modified Geopolymers for the Photocatalytic Dye Decomposition. Crystals 2021, 11, 1511. https://doi.org/10.3390/cryst11121511

AMA Style

Novotná M, Knotek P, Hanzlíček T, Kutálek P, Perná I, Melánová K, Černošková E, Kopecká K. TiO2 Modified Geopolymers for the Photocatalytic Dye Decomposition. Crystals. 2021; 11(12):1511. https://doi.org/10.3390/cryst11121511

Chicago/Turabian Style

Novotná, Martina, Petr Knotek, Tomáš Hanzlíček, Petr Kutálek, Ivana Perná, Klára Melánová, Eva Černošková, and Kateřina Kopecká. 2021. "TiO2 Modified Geopolymers for the Photocatalytic Dye Decomposition" Crystals 11, no. 12: 1511. https://doi.org/10.3390/cryst11121511

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