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TiO2 Modified Geopolymers for the Photocatalytic Dye Decomposition
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SYSNO ASEP 0549197 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title TiO2 Modified Geopolymers for the Photocatalytic Dye Decomposition Author(s) Novotná, Martina (USMH-B) ORCID
Knotek, P. (CZ)
Hanzlíček, Tomáš (USMH-B) RID
Kutálek, P. (CZ)
Perná, Ivana (USMH-B) RID, ORCID, SAI
Melánová, K. (CZ)
Černošková, E. (CZ)
Kopecká, K. (CZ)Article number 1511 Source Title Crystals. - : MDPI - ISSN 2073-4352
Roč. 11, č. 12 (2021)Number of pages 18 s. Publication form Online - E Language eng - English Country CH - Switzerland Keywords geopolymer ; TiO2 ; dye decomposition ; photocatalytic activity Subject RIV JI - Composite Materials OECD category Composites (including laminates, reinforced plastics, cermets, combined natural and synthetic fibre fabrics Method of publishing Open access Institutional support USMH-B - RVO:67985891 UT WOS 000737056700001 DOI 10.3390/cryst11121511 Annotation 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 improved properties such as a higher average particle size, lower specific surface area, mineralogical composition, 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. Workplace Institute of Rock Structure and Mechanics Contact Iva Švihálková, svihalkova@irsm.cas.cz, Tel.: 266 009 216 Year of Publishing 2022 Electronic address https://www.mdpi.com/2073-4352/11/12/1511
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