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Article

Bacteria-Mediated Synthesis of Silver and Silver Chloride Nanoparticles and Their Antimicrobial Activity

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Materials Science Department, Transilvania University of Brasov, 29 Eroilor Blvd., 500036 Brasov, Romania
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Materials Engineering and Welding Department, Transilvania University of Brasov, 29 Eroilor Blvd., 500036 Brasov, Romania
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Department of Chemical Engineering, Ben-Gurion University of the Negev, P.O.B 653, Beer-Sheva 84105, Israel
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Clinical Microbiology Laboratory, Soroka University Medical Center, Beer-Sheva 84101, Israel
*
Authors to whom correspondence should be addressed.
Academic Editor: Won Ho Park
Appl. Sci. 2021, 11(7), 3134; https://doi.org/10.3390/app11073134
Received: 11 March 2021 / Revised: 24 March 2021 / Accepted: 25 March 2021 / Published: 1 April 2021
Within the frame of this work, the synthesis of silver nanoparticles (Ag NPs) and silver chloride nanoparticles (AgCl NPs) as mediated by microbes has been investigated. The nanoparticles were reduced from a silver nitrate precursor by the presence of bacteria, like Raoultella planticola and Pantoea agglomerans. The results show that the characteristic surface plasmon resonance absorption band occurs at about 440 nm. Nanoparticles were also characterized with the help of scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), transmission electron microscopy (TEM), and X-ray diffraction (XRD), which showed the formation of spherical Ag/AgCl NPs with a centered cubic crystal structure and a mean particle size of around 10–50 nm. Assays for antimicrobial activity of the biosynthesized nanoparticles demonstrated meaningful results against microorganisms such as Staphylococcus aureus, Streptococcus pyogenes, Salmonella, and Bacillus amyloliquefaciens. Furthermore, this study shows that the combination of the obtained nanoparticles with standard antibiotics may be useful in the fight against emerging microbial drug resistance. View Full-Text
Keywords: silver chloride; nanoparticles; Pantoea agglomerans; Raoultella planticola; antibacterial properties silver chloride; nanoparticles; Pantoea agglomerans; Raoultella planticola; antibacterial properties
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MDPI and ACS Style

Ghiuta, I.; Croitoru, C.; Kost, J.; Wenkert, R.; Munteanu, D. Bacteria-Mediated Synthesis of Silver and Silver Chloride Nanoparticles and Their Antimicrobial Activity. Appl. Sci. 2021, 11, 3134. https://doi.org/10.3390/app11073134

AMA Style

Ghiuta I, Croitoru C, Kost J, Wenkert R, Munteanu D. Bacteria-Mediated Synthesis of Silver and Silver Chloride Nanoparticles and Their Antimicrobial Activity. Applied Sciences. 2021; 11(7):3134. https://doi.org/10.3390/app11073134

Chicago/Turabian Style

Ghiuta, Ioana, Catalin Croitoru, Joseph Kost, Rodica Wenkert, and Daniel Munteanu. 2021. "Bacteria-Mediated Synthesis of Silver and Silver Chloride Nanoparticles and Their Antimicrobial Activity" Applied Sciences 11, no. 7: 3134. https://doi.org/10.3390/app11073134

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