Eco-friendly decoration of graphene oxide with biogenic silver nanoparticles: antibacterial and antibiofilm activity
This work reports on preparation, characterization, and antibacterial activity of graphene oxide (GO) decorated with biogenic silver nanoparticles (Bio-AgNPs) produced by the fungus Fusarium oxysporum . This nanocomposite (Bio-GOAg) was prepared by an ex situ process through the physical mixture of...
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Published in | Journal of nanoparticle research : an interdisciplinary forum for nanoscale science and technology Vol. 16; no. 2; pp. 1 - 16 |
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Main Authors | , , , , , , , |
Format | Journal Article |
Language | English |
Published |
Dordrecht
Springer Netherlands
01.02.2014
Springer Springer Nature B.V |
Subjects | |
Online Access | Get full text |
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Summary: | This work reports on preparation, characterization, and antibacterial activity of graphene oxide (GO) decorated with biogenic silver nanoparticles (Bio-AgNPs) produced by the fungus
Fusarium oxysporum
. This nanocomposite (Bio-GOAg) was prepared by an
ex situ
process through the physical mixture of a GO dispersion with the previously prepared Bio-AgNPs. The adsorption of the Bio-AgNPs onto the GO sheets was confirmed by transmission electron microscopy. The average size of the Bio-AgNPs anchored onto the GO surface was found to be 3.5 nm. The antibacterial activity of the Bio-GOAg nanocomposite against Gram-positive and Gram-negative microorganisms was investigated and a very promising result was found for the Gram-negative strains. In addition, the Bio-GOAg nanocomposite displayed a very strong biocidal activity against the
Salmonella typhimurium
strain at a concentration of 2.0 μg/mL. The antibiofilm activity toward
S
.
typhimurium
adhered on stainless steel surfaces was also investigated. The results showed 100 % inhibition of the adhered cells after exposure to the Bio-GOAg nanocomposite for 1 h. |
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Bibliography: | ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 |
ISSN: | 1388-0764 1572-896X |
DOI: | 10.1007/s11051-013-2110-7 |