Visible-Light Active Flexible and Durable Photocatalytic Antibacterial Ethylene-co-vinyl Acetate—Ag/AgCl/α-Fe(2)O(3) Composite Coating

When particles are mixed in polymer, particle surfaces become passivated by polymer matrix, leading to significantly reduced photocatalytic and, thus, also reduced antibacterial activity, as the catalytic particles become isolated from the outer environment and microorganisms reaching the surface. H...

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Autores principales: Vihodceva, Svetlana, Šutka, Andris, Otsus, Maarja, Vija, Heiki, Grase, Liga, Kahru, Anne, Kasemets, Kaja
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9227942/
https://www.ncbi.nlm.nih.gov/pubmed/35745325
http://dx.doi.org/10.3390/nano12121984
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author Vihodceva, Svetlana
Šutka, Andris
Otsus, Maarja
Vija, Heiki
Grase, Liga
Kahru, Anne
Kasemets, Kaja
author_facet Vihodceva, Svetlana
Šutka, Andris
Otsus, Maarja
Vija, Heiki
Grase, Liga
Kahru, Anne
Kasemets, Kaja
author_sort Vihodceva, Svetlana
collection PubMed
description When particles are mixed in polymer, particle surfaces become passivated by polymer matrix, leading to significantly reduced photocatalytic and, thus, also reduced antibacterial activity, as the catalytic particles become isolated from the outer environment and microorganisms reaching the surface. Herein, we demonstrate a facile and rapid approach for coating preparation at room temperature, yielding good adhesion of particles in combination with the particles’ interface location. Flexible ethylene-co-vinyl acetate Ag/AgCl/α-Fe(2)O(3) composite coatings were prepared by the spin-coating method. The synthesized photocatalytically active coating surface exhibited a distinct and rapid inhibition of bacterial growth, with at least a 7-log reduction of gram-positive bacteria Staphylococcus aureus viability after 30 min of visible-light illumination. We also analyzed the shedding of the Ag-ions and reactive oxygen species production from the composite coating and showed that reactive oxygen species played the main role in the photocatalytic bacterial inactivation, destroying the bacteria cell as proven by the Confocal Laser Scanning Microscopy.
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spelling pubmed-92279422022-06-25 Visible-Light Active Flexible and Durable Photocatalytic Antibacterial Ethylene-co-vinyl Acetate—Ag/AgCl/α-Fe(2)O(3) Composite Coating Vihodceva, Svetlana Šutka, Andris Otsus, Maarja Vija, Heiki Grase, Liga Kahru, Anne Kasemets, Kaja Nanomaterials (Basel) Article When particles are mixed in polymer, particle surfaces become passivated by polymer matrix, leading to significantly reduced photocatalytic and, thus, also reduced antibacterial activity, as the catalytic particles become isolated from the outer environment and microorganisms reaching the surface. Herein, we demonstrate a facile and rapid approach for coating preparation at room temperature, yielding good adhesion of particles in combination with the particles’ interface location. Flexible ethylene-co-vinyl acetate Ag/AgCl/α-Fe(2)O(3) composite coatings were prepared by the spin-coating method. The synthesized photocatalytically active coating surface exhibited a distinct and rapid inhibition of bacterial growth, with at least a 7-log reduction of gram-positive bacteria Staphylococcus aureus viability after 30 min of visible-light illumination. We also analyzed the shedding of the Ag-ions and reactive oxygen species production from the composite coating and showed that reactive oxygen species played the main role in the photocatalytic bacterial inactivation, destroying the bacteria cell as proven by the Confocal Laser Scanning Microscopy. MDPI 2022-06-09 /pmc/articles/PMC9227942/ /pubmed/35745325 http://dx.doi.org/10.3390/nano12121984 Text en © 2022 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
Vihodceva, Svetlana
Šutka, Andris
Otsus, Maarja
Vija, Heiki
Grase, Liga
Kahru, Anne
Kasemets, Kaja
Visible-Light Active Flexible and Durable Photocatalytic Antibacterial Ethylene-co-vinyl Acetate—Ag/AgCl/α-Fe(2)O(3) Composite Coating
title Visible-Light Active Flexible and Durable Photocatalytic Antibacterial Ethylene-co-vinyl Acetate—Ag/AgCl/α-Fe(2)O(3) Composite Coating
title_full Visible-Light Active Flexible and Durable Photocatalytic Antibacterial Ethylene-co-vinyl Acetate—Ag/AgCl/α-Fe(2)O(3) Composite Coating
title_fullStr Visible-Light Active Flexible and Durable Photocatalytic Antibacterial Ethylene-co-vinyl Acetate—Ag/AgCl/α-Fe(2)O(3) Composite Coating
title_full_unstemmed Visible-Light Active Flexible and Durable Photocatalytic Antibacterial Ethylene-co-vinyl Acetate—Ag/AgCl/α-Fe(2)O(3) Composite Coating
title_short Visible-Light Active Flexible and Durable Photocatalytic Antibacterial Ethylene-co-vinyl Acetate—Ag/AgCl/α-Fe(2)O(3) Composite Coating
title_sort visible-light active flexible and durable photocatalytic antibacterial ethylene-co-vinyl acetate—ag/agcl/α-fe(2)o(3) composite coating
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9227942/
https://www.ncbi.nlm.nih.gov/pubmed/35745325
http://dx.doi.org/10.3390/nano12121984
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