Synthesis and application of g-C3N4/Fe3O4/Ag nanocomposite for the efficient photocatalytic inactivation of Escherichia coli and Bacillus subtilis bacteria in aqueous solutions

Abstract 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-C3N4/Fe3O4/Ag nanocomposite combined with UV-light...

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Autores principales:	Soudabeh Ghodsi, Ali Esrafili, Hamid Reza Sobhi, Roshanak Rezaei Kalantary, Mitra Gholami, Ramin maleki
Formato:	article
Lenguaje:	EN
Publicado:	SpringerOpen 2021
Materias:	Photocatalysis E. coli B. subtilis g-C3N4/Fe3O4/Ag Inactivation Biotechnology TP248.13-248.65 Microbiology QR1-502
Acceso en línea:	https://doaj.org/article/6fab516f71314897967453303d5f353a
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spelling	oai:doaj.org-article:6fab516f71314897967453303d5f353a2021-12-05T12:08:34ZSynthesis and application of g-C3N4/Fe3O4/Ag nanocomposite for the efficient photocatalytic inactivation of Escherichia coli and Bacillus subtilis bacteria in aqueous solutions10.1186/s13568-021-01324-32191-0855https://doaj.org/article/6fab516f71314897967453303d5f353a2021-12-01T00:00:00Zhttps://doi.org/10.1186/s13568-021-01324-3https://doaj.org/toc/2191-0855Abstract 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-C3N4/Fe3O4/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 103 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 C3N4/Fe3O4/Ag nanocomposite along with UV-light irradiation is highly effective in inactivating E. coli and B. subtilis bacteria in the aqueous solutions.Soudabeh GhodsiAli EsrafiliHamid Reza SobhiRoshanak Rezaei KalantaryMitra GholamiRamin malekiSpringerOpenarticlePhotocatalysisE. coliB. subtilisg-C3N4/Fe3O4/AgInactivationBiotechnologyTP248.13-248.65MicrobiologyQR1-502ENAMB Express, Vol 11, Iss 1, Pp 1-12 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Photocatalysis E. coli B. subtilis g-C3N4/Fe3O4/Ag Inactivation Biotechnology TP248.13-248.65 Microbiology QR1-502
spellingShingle	Photocatalysis E. coli B. subtilis g-C3N4/Fe3O4/Ag Inactivation Biotechnology TP248.13-248.65 Microbiology QR1-502 Soudabeh Ghodsi Ali Esrafili Hamid Reza Sobhi Roshanak Rezaei Kalantary Mitra Gholami Ramin maleki Synthesis and application of g-C3N4/Fe3O4/Ag nanocomposite for the efficient photocatalytic inactivation of Escherichia coli and Bacillus subtilis bacteria in aqueous solutions
description	Abstract 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-C3N4/Fe3O4/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 103 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 C3N4/Fe3O4/Ag nanocomposite along with UV-light irradiation is highly effective in inactivating E. coli and B. subtilis bacteria in the aqueous solutions.
format	article
author	Soudabeh Ghodsi Ali Esrafili Hamid Reza Sobhi Roshanak Rezaei Kalantary Mitra Gholami Ramin maleki
author_facet	Soudabeh Ghodsi Ali Esrafili Hamid Reza Sobhi Roshanak Rezaei Kalantary Mitra Gholami Ramin maleki
author_sort	Soudabeh Ghodsi
title	Synthesis and application of g-C3N4/Fe3O4/Ag nanocomposite for the efficient photocatalytic inactivation of Escherichia coli and Bacillus subtilis bacteria in aqueous solutions
title_short	Synthesis and application of g-C3N4/Fe3O4/Ag nanocomposite for the efficient photocatalytic inactivation of Escherichia coli and Bacillus subtilis bacteria in aqueous solutions
title_full	Synthesis and application of g-C3N4/Fe3O4/Ag nanocomposite for the efficient photocatalytic inactivation of Escherichia coli and Bacillus subtilis bacteria in aqueous solutions
title_fullStr	Synthesis and application of g-C3N4/Fe3O4/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-C3N4/Fe3O4/Ag nanocomposite for the efficient photocatalytic inactivation of Escherichia coli and Bacillus subtilis bacteria in aqueous solutions
title_sort	synthesis and application of g-c3n4/fe3o4/ag nanocomposite for the efficient photocatalytic inactivation of escherichia coli and bacillus subtilis bacteria in aqueous solutions
publisher	SpringerOpen
publishDate	2021
url	https://doaj.org/article/6fab516f71314897967453303d5f353a
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Synthesis and application of g-C3N4/Fe3O4/Ag nanocomposite for the efficient photocatalytic inactivation of Escherichia coli and Bacillus subtilis bacteria in aqueous solutions

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