Synthesis and applications of a new catalyst based on silver nanoparticles incorporated on cationic clay
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542.057:546.57 (1)
Практическая и лабораторная химия, препаративная и экспериментальная химия (115)
Неорганическая химия (356)
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MIRILA, Diana-Carmen; RADUCANU, Dumitra; PLATON, Nicoleta; DIDI, Mohamed Amine; NISTOR, Ileana-Denisa; AZZOUZ, Abdelkrim. Synthesis and applications of a new catalyst based on silver nanoparticles incorporated on cationic clay. In: Ecological and environmental chemistry - 2022. Ediția 7, Vol.1, 3-4 martie 2022, Chișinău. Chisinau: Centrul Editorial-Poligrafic al USM, 2022, p. 163. ISBN 978-9975-159-06-7..
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Ecological and environmental chemistry
Ediția 7, Vol.1, 2022
Conferința "Ecological and environmental chemistry 2022"
7th, Chișinău, Moldova, 3-4 martie 2022

Synthesis and applications of a new catalyst based on silver nanoparticles incorporated on cationic clay

CZU: 542.057:546.57

Pag. 163-163

Mirila Diana-Carmen1, Raducanu Dumitra1, Platon Nicoleta1, Didi Mohamed Amine2, Nistor Ileana-Denisa1, Azzouz Abdelkrim3
 
1 "Vasile Alecsandri" University of Bacau,
2 University of Belkaïd Abou Bekr Tlemcen,
3 University of Quebec at Montreal
 
Disponibil în IBN: 16 martie 2022


Rezumat

A facile, eco-friendly and cost effective method involving clay coating with silver was developed to prepare a microporous material BN-Ag0 core shell with high catalytic and bactericidal /bacteriostatic activities against newly isolated bacterium from sewage sludge, named ISO SS. The catalytic activity of this nanomaterial in the mineralization process of Malachite Green and Tartrazine dyes was also tested. Malachite Green (nature = basic green), classified in the dyestuff industry as a triarylmethane dye, usually used as a dyestuf for materials such as paper, leather, silk and controversially as a strong anti-bacterial, antifungal and antiparasitic agent in fish farming. Effects due to its presence in the environment by the accumulation of sediments in the aquatic environment can cause the disappearance of fish species or even aquatic life in time due to its toxicity. It is highly cytotoxic to mammalian cells and acts as a tumor enhancing agent. On humans, it possibly causes carcinogenic, mutagenic and teratogenic effects, if it may enters in the food chain. Tartrazine is a stable water-soluble azo dye widely used as a food additive, which could pose potential threats to humans and the environment. It acts as a histological dye and food dye, being one of the most stable, edible and synthetic pigments. It is widely used as a food additive, such as coloring in beverages (juice drinks, carbonated beverages), mixed beverages and confectionery. In addition, it has a wide range of uses in the pharmaceutical, cosmetics, clothing and other industries. For this purpose, a silica material (BN) coated with silver oxide was prepared, followed by the chemical reduction of silver with sodium tetrahydroborate (BN-Ag0). The catalytic and antibacterial activities of the clay (BN) and its chemically modified counterpart (BN-Ag0), along with its recyclability will be examined using diverse characterization techniques. The results obtained are expected to provide valuable findings for the preparation of a good silica core shell material with multiple functionalities.

Cuvinte-cheie
Silver, adsorption, Catalyst, catalytic ozonation, dyes, bacteria.