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Silver-doped active carbon spheres and their application for microbial decontamination of water

Highly efficient and durable, silver nanoparticles doped Active Carbon Spheres ACS(Ag) were synthesized by carbonization and activation of silver exchanged resins. The silver exchanged resins were prepared by exchanging H(+) ions of polystyrene sulphonate resin with Ag(+) ions of silver nitrate (AgN...

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Autores principales: Chandra Joshi, Harish, Dutta, Dhiraj, Gaur, Nisha, Singh, G.S., Dubey, Rama, Dwivedi, S.K.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Elsevier 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8983378/
https://www.ncbi.nlm.nih.gov/pubmed/35399375
http://dx.doi.org/10.1016/j.heliyon.2022.e09209
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author Chandra Joshi, Harish
Dutta, Dhiraj
Gaur, Nisha
Singh, G.S.
Dubey, Rama
Dwivedi, S.K.
author_facet Chandra Joshi, Harish
Dutta, Dhiraj
Gaur, Nisha
Singh, G.S.
Dubey, Rama
Dwivedi, S.K.
author_sort Chandra Joshi, Harish
collection PubMed
description Highly efficient and durable, silver nanoparticles doped Active Carbon Spheres ACS(Ag) were synthesized by carbonization and activation of silver exchanged resins. The silver exchanged resins were prepared by exchanging H(+) ions of polystyrene sulphonate resin with Ag(+) ions of silver nitrate (AgNO(3)). The quantity of Ag(+) in the spheres was controlled by varying the concentration of AgNO(3), from 0.0125 to 0.1 M. With increasing molar concentration of AgNO(3,) the effective intake of Ag(+) by the sphere increases from 1.1 to 8.1 weight percent (wt %). For activation, the spheres were incubated in the CO(2) atmosphere for 6 h at fixed soaking temperature i.e. 1123 K. The characterization of synthesized silver doped ACS was performed by using different sophisticated instrumental techniques. The antimicrobial activity of silver doped ACS was studied against different bacterial strains like, E. coli, B. subtilis and Staphylococcus aureus. The study demonstrated that the zone of inhibition for E. coli was 16.9 ± 0.7 mm while for B. subtilis it was 17.1 ± 0.3 mm at a concentration of 8 mg of synthesized material. In addition, satisfactory results were obtained in shake flask and filtration test experiments also, even at a low concentration of 2 mg, showing growth inhibition of 94% for E. coli and 93% for B. subtilis. When the concentration of silver doped ACS was increased to 8 mg, complete removal of both the bacteria was observed after 24 h (100 % reduction for E. coli and B. subtilis). Furthermore, when silver doped ACS was tested against Staphylococcus aureus according to ASTM:E 2149-01 method, biocidal activity of up to 73% was observed. Therefore, the silver doped ACS can be considered as a potential biocidal material for the studied bacterial strains and hence find suitable application for decontamination of water.
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spelling pubmed-89833782022-04-07 Silver-doped active carbon spheres and their application for microbial decontamination of water Chandra Joshi, Harish Dutta, Dhiraj Gaur, Nisha Singh, G.S. Dubey, Rama Dwivedi, S.K. Heliyon Research Article Highly efficient and durable, silver nanoparticles doped Active Carbon Spheres ACS(Ag) were synthesized by carbonization and activation of silver exchanged resins. The silver exchanged resins were prepared by exchanging H(+) ions of polystyrene sulphonate resin with Ag(+) ions of silver nitrate (AgNO(3)). The quantity of Ag(+) in the spheres was controlled by varying the concentration of AgNO(3), from 0.0125 to 0.1 M. With increasing molar concentration of AgNO(3,) the effective intake of Ag(+) by the sphere increases from 1.1 to 8.1 weight percent (wt %). For activation, the spheres were incubated in the CO(2) atmosphere for 6 h at fixed soaking temperature i.e. 1123 K. The characterization of synthesized silver doped ACS was performed by using different sophisticated instrumental techniques. The antimicrobial activity of silver doped ACS was studied against different bacterial strains like, E. coli, B. subtilis and Staphylococcus aureus. The study demonstrated that the zone of inhibition for E. coli was 16.9 ± 0.7 mm while for B. subtilis it was 17.1 ± 0.3 mm at a concentration of 8 mg of synthesized material. In addition, satisfactory results were obtained in shake flask and filtration test experiments also, even at a low concentration of 2 mg, showing growth inhibition of 94% for E. coli and 93% for B. subtilis. When the concentration of silver doped ACS was increased to 8 mg, complete removal of both the bacteria was observed after 24 h (100 % reduction for E. coli and B. subtilis). Furthermore, when silver doped ACS was tested against Staphylococcus aureus according to ASTM:E 2149-01 method, biocidal activity of up to 73% was observed. Therefore, the silver doped ACS can be considered as a potential biocidal material for the studied bacterial strains and hence find suitable application for decontamination of water. Elsevier 2022-03-30 /pmc/articles/PMC8983378/ /pubmed/35399375 http://dx.doi.org/10.1016/j.heliyon.2022.e09209 Text en © 2022 Published by Elsevier Ltd. https://creativecommons.org/licenses/by-nc-nd/4.0/This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).
spellingShingle Research Article
Chandra Joshi, Harish
Dutta, Dhiraj
Gaur, Nisha
Singh, G.S.
Dubey, Rama
Dwivedi, S.K.
Silver-doped active carbon spheres and their application for microbial decontamination of water
title Silver-doped active carbon spheres and their application for microbial decontamination of water
title_full Silver-doped active carbon spheres and their application for microbial decontamination of water
title_fullStr Silver-doped active carbon spheres and their application for microbial decontamination of water
title_full_unstemmed Silver-doped active carbon spheres and their application for microbial decontamination of water
title_short Silver-doped active carbon spheres and their application for microbial decontamination of water
title_sort silver-doped active carbon spheres and their application for microbial decontamination of water
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8983378/
https://www.ncbi.nlm.nih.gov/pubmed/35399375
http://dx.doi.org/10.1016/j.heliyon.2022.e09209
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