Inorganically modified smectites for environmental applications

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68145535%3A_____%2F22%3A00565071" target="_blank" >RIV/68145535:_____/22:00565071 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.dttg.ethz.ch/Abstract%20book%20mecc20.pdf" target="_blank" >https://www.dttg.ethz.ch/Abstract%20book%20mecc20.pdf</a>

DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Inorganically modified smectites for environmental applications

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

Inorganically modified smectites for environmental applications

Popis výsledku anglicky

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.

Druh

O - Ostatní výsledky

CEP obor

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OECD FORD obor

10406 - Analytical chemistry

Projekt

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Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2022

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů