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Synthesis and application of g-C(3)N(4)/Fe(3)O(4)/Ag nanocomposite for the efficient photocatalytic inactivation of Escherichia coli and Bacillus subtilis bacteria in aqueous solutions

Contamination of water with bacteria is one of the main causes of waterborne diseases. The photocatalytic method on the basis of bacterial inactivation seems to be a suitable disinfectant due to the lack of by-products formation. Herein, g-C(3)N(4)/Fe(3)O(4)/Ag nanocomposite combined with UV-light i...

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Autores principales: Ghodsi, Soudabeh, Esrafili, Ali, Sobhi, Hamid Reza, Rezaei Kalantary, Roshanak, Gholami, Mitra, maleki, Ramin
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Springer Berlin Heidelberg 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8642592/
https://www.ncbi.nlm.nih.gov/pubmed/34860289
http://dx.doi.org/10.1186/s13568-021-01324-3
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author Ghodsi, Soudabeh
Esrafili, Ali
Sobhi, Hamid Reza
Rezaei Kalantary, Roshanak
Gholami, Mitra
maleki, Ramin
author_facet Ghodsi, Soudabeh
Esrafili, Ali
Sobhi, Hamid Reza
Rezaei Kalantary, Roshanak
Gholami, Mitra
maleki, Ramin
author_sort Ghodsi, Soudabeh
collection PubMed
description Contamination of water with bacteria is one of the main causes of waterborne diseases. The photocatalytic method on the basis of bacterial inactivation seems to be a suitable disinfectant due to the lack of by-products formation. Herein, g-C(3)N(4)/Fe(3)O(4)/Ag nanocomposite combined with UV-light irradiation was applied for the inactivation two well-known bacteria namely, E. coli and B. subtilis. The nanocomposite was prepared by a hydrothermal method, and subsequently it was characterized by XRD, FT-IR, SEM, EDX and PL analyses. The optimum conditions established for the inactivation of both bacteria were as follows: nanocomposite dosage 3 g/L and bacterial density of 10(3) CFU/mL. In the meantime, the efficient inactivation of E. coli and B. subtilis took 30 and 150 min, respectively. The results also revealed that inactivation rate dropped with an increase in the bacterial density. It is also pointed out that OH˚ was found out to be the main radical species involved in the inactivation process. Finally, the kinetic results indicated that the inactivation of E. coli and B. subtilis followed the Weibull model. It is concluded that C(3)N(4)/Fe(3)O(4)/Ag nanocomposite along with UV-light irradiation is highly effective in inactivating E. coli and B. subtilis bacteria in the aqueous solutions.
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spelling pubmed-86425922021-12-15 Synthesis and application of g-C(3)N(4)/Fe(3)O(4)/Ag nanocomposite for the efficient photocatalytic inactivation of Escherichia coli and Bacillus subtilis bacteria in aqueous solutions Ghodsi, Soudabeh Esrafili, Ali Sobhi, Hamid Reza Rezaei Kalantary, Roshanak Gholami, Mitra maleki, Ramin AMB Express Original Article Contamination of water with bacteria is one of the main causes of waterborne diseases. The photocatalytic method on the basis of bacterial inactivation seems to be a suitable disinfectant due to the lack of by-products formation. Herein, g-C(3)N(4)/Fe(3)O(4)/Ag nanocomposite combined with UV-light irradiation was applied for the inactivation two well-known bacteria namely, E. coli and B. subtilis. The nanocomposite was prepared by a hydrothermal method, and subsequently it was characterized by XRD, FT-IR, SEM, EDX and PL analyses. The optimum conditions established for the inactivation of both bacteria were as follows: nanocomposite dosage 3 g/L and bacterial density of 10(3) CFU/mL. In the meantime, the efficient inactivation of E. coli and B. subtilis took 30 and 150 min, respectively. The results also revealed that inactivation rate dropped with an increase in the bacterial density. It is also pointed out that OH˚ was found out to be the main radical species involved in the inactivation process. Finally, the kinetic results indicated that the inactivation of E. coli and B. subtilis followed the Weibull model. It is concluded that C(3)N(4)/Fe(3)O(4)/Ag nanocomposite along with UV-light irradiation is highly effective in inactivating E. coli and B. subtilis bacteria in the aqueous solutions. Springer Berlin Heidelberg 2021-12-03 /pmc/articles/PMC8642592/ /pubmed/34860289 http://dx.doi.org/10.1186/s13568-021-01324-3 Text en © The Author(s) 2021 https://creativecommons.org/licenses/by/4.0/Open AccessThis article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) .
spellingShingle Original Article
Ghodsi, Soudabeh
Esrafili, Ali
Sobhi, Hamid Reza
Rezaei Kalantary, Roshanak
Gholami, Mitra
maleki, Ramin
Synthesis and application of g-C(3)N(4)/Fe(3)O(4)/Ag nanocomposite for the efficient photocatalytic inactivation of Escherichia coli and Bacillus subtilis bacteria in aqueous solutions
title Synthesis and application of g-C(3)N(4)/Fe(3)O(4)/Ag nanocomposite for the efficient photocatalytic inactivation of Escherichia coli and Bacillus subtilis bacteria in aqueous solutions
title_full Synthesis and application of g-C(3)N(4)/Fe(3)O(4)/Ag nanocomposite for the efficient photocatalytic inactivation of Escherichia coli and Bacillus subtilis bacteria in aqueous solutions
title_fullStr Synthesis and application of g-C(3)N(4)/Fe(3)O(4)/Ag nanocomposite for the efficient photocatalytic inactivation of Escherichia coli and Bacillus subtilis bacteria in aqueous solutions
title_full_unstemmed Synthesis and application of g-C(3)N(4)/Fe(3)O(4)/Ag nanocomposite for the efficient photocatalytic inactivation of Escherichia coli and Bacillus subtilis bacteria in aqueous solutions
title_short Synthesis and application of g-C(3)N(4)/Fe(3)O(4)/Ag nanocomposite for the efficient photocatalytic inactivation of Escherichia coli and Bacillus subtilis bacteria in aqueous solutions
title_sort synthesis and application of g-c(3)n(4)/fe(3)o(4)/ag nanocomposite for the efficient photocatalytic inactivation of escherichia coli and bacillus subtilis bacteria in aqueous solutions
topic Original Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8642592/
https://www.ncbi.nlm.nih.gov/pubmed/34860289
http://dx.doi.org/10.1186/s13568-021-01324-3
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