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Microwave Irradiation vs. Structural, Physicochemical, and Biological Features of Porous Environmentally Active Silver–Silica Nanocomposites

Heavy metals and other organic pollutants burden the environment, and their removal or neutralization is still inadequate. The great potential for development in this area includes porous, spherical silica nanostructures with a well-developed active surface and open porosity. In this context, we mod...

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Autores principales: Strach, Aleksandra, Dulski, Mateusz, Wasilkowski, Daniel, Metryka, Oliwia, Nowak, Anna, Matus, Krzysztof, Dudek, Karolina, Rawicka, Patrycja, Kubacki, Jerzy, Waloszczyk, Natalia, Mrozik, Agnieszka, Golba, Sylwia
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10095382/
https://www.ncbi.nlm.nih.gov/pubmed/37047604
http://dx.doi.org/10.3390/ijms24076632
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author Strach, Aleksandra
Dulski, Mateusz
Wasilkowski, Daniel
Metryka, Oliwia
Nowak, Anna
Matus, Krzysztof
Dudek, Karolina
Rawicka, Patrycja
Kubacki, Jerzy
Waloszczyk, Natalia
Mrozik, Agnieszka
Golba, Sylwia
author_facet Strach, Aleksandra
Dulski, Mateusz
Wasilkowski, Daniel
Metryka, Oliwia
Nowak, Anna
Matus, Krzysztof
Dudek, Karolina
Rawicka, Patrycja
Kubacki, Jerzy
Waloszczyk, Natalia
Mrozik, Agnieszka
Golba, Sylwia
author_sort Strach, Aleksandra
collection PubMed
description Heavy metals and other organic pollutants burden the environment, and their removal or neutralization is still inadequate. The great potential for development in this area includes porous, spherical silica nanostructures with a well-developed active surface and open porosity. In this context, we modified the surface of silica spheres using a microwave field (variable power and exposure time) to increase the metal uptake potential and build stable bioactive Ag(2)O/Ag(2)CO(3) heterojunctions. The results showed that the power of the microwave field (P = 150 or 700 W) had a more negligible effect on carrier modification than time (t = 60 or 150 s). The surface-activated and silver-loaded silica carrier features like morphology, structure, and chemical composition correlate with microbial and antioxidant enzyme activity. We demonstrated that the increased sphericity of silver nanoparticles enormously increased toxicity against E. coli, B. cereus, and S. epidermidis. Furthermore, such structures negatively affected the antioxidant defense system of E. coli, B. cereus, and S. epidermidis through the induction of oxidative stress, leading to cell death. The most robust effects were found for nanocomposites in which the carrier was treated for an extended period in a microwave field.
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spelling pubmed-100953822023-04-13 Microwave Irradiation vs. Structural, Physicochemical, and Biological Features of Porous Environmentally Active Silver–Silica Nanocomposites Strach, Aleksandra Dulski, Mateusz Wasilkowski, Daniel Metryka, Oliwia Nowak, Anna Matus, Krzysztof Dudek, Karolina Rawicka, Patrycja Kubacki, Jerzy Waloszczyk, Natalia Mrozik, Agnieszka Golba, Sylwia Int J Mol Sci Article Heavy metals and other organic pollutants burden the environment, and their removal or neutralization is still inadequate. The great potential for development in this area includes porous, spherical silica nanostructures with a well-developed active surface and open porosity. In this context, we modified the surface of silica spheres using a microwave field (variable power and exposure time) to increase the metal uptake potential and build stable bioactive Ag(2)O/Ag(2)CO(3) heterojunctions. The results showed that the power of the microwave field (P = 150 or 700 W) had a more negligible effect on carrier modification than time (t = 60 or 150 s). The surface-activated and silver-loaded silica carrier features like morphology, structure, and chemical composition correlate with microbial and antioxidant enzyme activity. We demonstrated that the increased sphericity of silver nanoparticles enormously increased toxicity against E. coli, B. cereus, and S. epidermidis. Furthermore, such structures negatively affected the antioxidant defense system of E. coli, B. cereus, and S. epidermidis through the induction of oxidative stress, leading to cell death. The most robust effects were found for nanocomposites in which the carrier was treated for an extended period in a microwave field. MDPI 2023-04-01 /pmc/articles/PMC10095382/ /pubmed/37047604 http://dx.doi.org/10.3390/ijms24076632 Text en © 2023 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Strach, Aleksandra
Dulski, Mateusz
Wasilkowski, Daniel
Metryka, Oliwia
Nowak, Anna
Matus, Krzysztof
Dudek, Karolina
Rawicka, Patrycja
Kubacki, Jerzy
Waloszczyk, Natalia
Mrozik, Agnieszka
Golba, Sylwia
Microwave Irradiation vs. Structural, Physicochemical, and Biological Features of Porous Environmentally Active Silver–Silica Nanocomposites
title Microwave Irradiation vs. Structural, Physicochemical, and Biological Features of Porous Environmentally Active Silver–Silica Nanocomposites
title_full Microwave Irradiation vs. Structural, Physicochemical, and Biological Features of Porous Environmentally Active Silver–Silica Nanocomposites
title_fullStr Microwave Irradiation vs. Structural, Physicochemical, and Biological Features of Porous Environmentally Active Silver–Silica Nanocomposites
title_full_unstemmed Microwave Irradiation vs. Structural, Physicochemical, and Biological Features of Porous Environmentally Active Silver–Silica Nanocomposites
title_short Microwave Irradiation vs. Structural, Physicochemical, and Biological Features of Porous Environmentally Active Silver–Silica Nanocomposites
title_sort microwave irradiation vs. structural, physicochemical, and biological features of porous environmentally active silver–silica nanocomposites
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10095382/
https://www.ncbi.nlm.nih.gov/pubmed/37047604
http://dx.doi.org/10.3390/ijms24076632
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