Smectites composite materials for environmental remediation
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68145535%3A_____%2F23%3A00573479" target="_blank" >RIV/68145535:_____/23:00573479 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Alternative languages
Result language
angličtina
Original language name
Smectites composite materials for environmental remediation
Original language description
Clay minerals from the smectite group are widely used as precursors for composite materials. Clay-based composites represent a current trend in the development of novel materials that can offer a suitable alternative of eco-friendly and affordable materials for pollutant removal in environmental remediation. The study focuses on design and preparation of composites based on selected smectites with manganese oxides and verification of their performance in various applications. The preparation of composites was performed by precipitation of manganese oxides colloids on the surface of chemically modified clay mineral montmorillonit. The prepared materials were characterized by X-ray diffraction analysis (XRD), infrared spectroscopy (FT-IR), scanning electron microscopy (SEM) and X-ray fluorescence spectroscopy (XRFS). The composites were studied for thermal stability, catalytic activity, sorption properties and evaluation of specific surface area. Results showed creation of a manganese oxide phase with a structure of α-MnO2 (XRD, FT-IR), the α-MnO2 fibers cover the surface of the clay grains and are much shorter than in the neat reference sample (SEM). The obtained composites exhibited increased efficiency in catalytic combustion of volatile organic compounds (toluene and ethanol). The adsorption procedure in a batch regimen confirmed sufficient sorption ability (over 90%) for two types of broad-spectrum antibiotics.
Czech name
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Czech description
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Classification
Type
O - Miscellaneous
CEP classification
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OECD FORD branch
10406 - Analytical chemistry
Result continuities
Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2023
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů