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Inorganically modified smectites for environmental applications
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SYSNO ASEP 0565071 Document Type A - Abstract R&D Document Type O - Ostatní Title Inorganically modified smectites for environmental applications Author(s) Valovičová, Věra (UGN-S) RID
Vaculíková, Lenka (UGN-S) RID, ORCID
Plevová, Eva (UGN-S) RID, ORCID
Dolinská, S. (SK)
Znamenáčková, I. (SK)
Vallová, S. (CZ)
Napruszewska, B. D. (PL)
Serwicka, E. M. (PL)Number of authors 8 Source Title Book of Abstracts of MECC 20/22. - Krakov : Wydawnictwo Naukowe Akapit, 2022 / Górniak K. ; Szydlak T. ; Sek M. - ISBN 978-83-65955-60-9
S. 94-94Number of pages 1 s. Publication form Online - E Action Jubilee Mid-European Clay Conference MECC‘20/22 /10./ Event date 12.09.2022 - 15.09.2022 VEvent location Kliczkow Country PL - Poland Event type WRD Language eng - English Country PL - Poland Keywords clay minerals ; modification ; sorption Subject RIV CB - Analytical Chemistry, Separation OECD category Analytical chemistry Institutional support UGN-S - RVO:68145535 Annotation Smectites represent promising starting nanomaterials for the design and preparation of multifunctional eco-friendly clay composites with predefined properties and a wide range of environmental applications. In this work, composite materials based on montmorillonite/manganese dioxide (MMT/MnO2) were synthetized by chemical treatment of clay matrix. Advanced techniques including XRD, XRFS, FT-IR, TG/DSC, SEM and N2 adsorption/desorption were used for detailed physico-chemical characterization of obtained composites. The MMT/MnO2 composites exhibited specific surface area ranging from 80 to 116 m2/g and mesoporous texture. MnO2 component formed in a presence of a clay matrix appeared as cryptomelane with a tunnel structure. The prepared materials were tested for their potential use as effective catalysts for the oxidation of volatile compounds and also for their application as effective sorbents for the removal of pharmaceuticals from wastewater. The obtained MMT/MnO2 composites showed catalytic activity on model compounds of ethanol and toluene, sorption properties on selected antibiotics (ampicillin and amoxicillin) and higher thermal stability. Textural properties of MMT/MnO2 samples facilitated the dispersion of the catalyst active phase and their high specific surface area enhanced their catalytic effects. Sorption experiments have demonstrated the ability to remove up to 90% of ampicillin and amoxicillin. Workplace Institute of Geonics Contact Lucie Gurková, lucie.gurkova@ugn.cas.cz, Tel.: 596 979 354 Year of Publishing 2023 Electronic address https://www.dttg.ethz.ch/Abstract%20book%20mecc20.pdf
Number of the records: 1