scholarly journals Facile synthesis of monodispersed silver nanoparticles on graphene oxide sheets with enhanced antibacterial activity

2011 ◽  
Vol 35 (7) ◽  
pp. 1418 ◽  
Author(s):  
Lei Liu ◽  
Jincheng Liu ◽  
Yinjie Wang ◽  
Xiaoli Yan ◽  
Darren Delai Sun
Keyword(s):  
Silver Nanoparticles ◽  
Antibacterial Activity ◽  
Graphene Oxide ◽  
Facile Synthesis ◽  
Graphene Oxide Sheets

Anti-adhesion and antibacterial activity of silver nanoparticles supported on graphene oxide sheets

2014 ◽  
Vol 113 ◽  
pp. 115-124 ◽  
Author(s):  
Andreia Fonseca de Faria ◽  
Diego Stéfani Teodoro Martinez ◽  
Stela Maris Meister Meira ◽  
Ana Carolina Mazarin de Moraes ◽  
Adriano Brandelli ◽  
...  
Keyword(s):  
Silver Nanoparticles ◽  
Antibacterial Activity ◽  
Graphene Oxide ◽  
Graphene Oxide Sheets

Silver Nanoparticles - Graphene Oxide Nanocomposite for Antibacterial Purpose

2011 ◽  
Vol 364 ◽  
pp. 439-443 ◽  
Author(s):  
Soon Wei Chook ◽  
Chin Hua Chia ◽  
Zakaria Sarani ◽  
Mohd Khan Ayob ◽  
Kah Leong Chee ◽  
...  
Keyword(s):  
Silver Nanoparticles ◽  
Graphene Oxide ◽  
Metallic Nanoparticles ◽  
Biomedical Applications ◽  
Food Packaging ◽  
Single Layer ◽  
In Situ Synthesis ◽  
Graphene Oxide Sheets

Graphene oxide (GO) sheets, a single layer of carbon atoms which can be served as substrates for fabricating metallic nanoparticles-GO nanocomposites. In this study, the nanocomposite of silver nanoparticles and graphene oxide were produced via in-situ synthesis and with the addition of chitosan to investigate the formation of silver nanoparticles on the graphene oxide sheets. XRD and UV-Vis studies confirmed the formation of silver nanoparticles on GO sheets, while TEM and FESEM images presented the loading of silver nanoparticles on the GO sheets. The degree of loading and distribution of the silver nanoparticles on the graphene oxide were depend on the method during the formation of silver nanoparticles. The nanocomposites can be potentially used in food packaging and biomedical applications.

scholarly journals Enhanced antibacterial activity through silver nanoparticles deposited onto carboxylated graphene oxide surface

2021 ◽  
Author(s):  
Arturo Barjola ◽  
María Ángeles Tormo ◽  
Oscar Sahuquillo ◽  
Patricia Bernabé ◽  
José Manuel Pérez ◽  
...  
Keyword(s):  
Silver Nanoparticles ◽  
Antibacterial Activity ◽  
Graphene Oxide ◽  
Biofilm Formation ◽  
Material Surface ◽  
Oxide Surface ◽  
Main Role ◽  
Carboxylic Groups ◽  
Average Size

Abstract The strong bactericidal action of silver nanoparticles (AgNPs) is usually limited for their degree of aggregation. Deposition of AgNPs onto a graphene oxide (GO) surface to generate GO-Ag hybrids has been shown to be an effective method to control these aggregation problems. In this sense, a novel carboxylated graphene oxide-silver nanoparticle (GOCOOH-Ag) material has been synthesized and their antibacterial and biofilm formation inhibition have been studied.AgNPs decorating the GOCOOH surface achieved an average size of 6.74±0.25 nm, which was smaller than those of AgNPs deposited onto the GO surface. In addition, better distribution of AgNPs was obtained using carboxylated material. It is important to highlight the main role of the carboxylic groups in the nucleation and growth of the AgNPs that decorate the GO-based material surface.In vitro antibacterial activity and antibiofilm-forming action were tested against Gram-positive (Staphylococcus aureus and Staphylococcus epidermidis) and Gram-negative bacteria (Pseudomonas aeruginosa and Escherichia coli). Both GO-Ag and GOCOOH-Ag reduced the bacterial growth, analyzed by time-kill curves. However, the minimum inhibitory concentration and the minimum bactericidal concentration of GOCOOH-Ag were lower than those of GO-Ag for all strains studied, indicating that GOCOOH-Ag has better antibacterial activity. In addition, both nanomaterials prevent biofilm-formation, with a higher reduction of biofilm mass and cell viability in the presence of GOCOOH-Ag. The carboxylation functionalization in GO-based materials can be applied to improve the bactericidal and antibiofilm-forming action of the AgNPs.

The effects of concentration, contact time, and pH value on antibacterial activity of silver nanoparticles decorated reduced graphene oxide

2019 ◽  
Vol 34 (13) ◽  
pp. 792-799 ◽  
Author(s):  
Nguyen Minh Dat ◽  
Vu Ngoc Phuong Linh ◽  
Nguyen Thi Lien Phuong ◽  
Le Ngoc Quan ◽  
Nguyen Thanh Huong ◽  
...  
Keyword(s):  
Silver Nanoparticles ◽  
Antibacterial Activity ◽  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Contact Time ◽  
Ph Value ◽  
Reduced Graphene

Optimization of the antibacterial activity of silver nanoparticles-decorated graphene oxide nanocomposites

2020 ◽  
Vol 268 ◽  
pp. 116492 ◽  
Author(s):  
Nguyen Thanh Huong ◽  
Nguyen Minh Dat ◽  
Doan Ba Thinh ◽  
Trinh Ngoc Minh Anh ◽  
Do Minh Nguyet ◽  
...  
Keyword(s):  
Silver Nanoparticles ◽  
Antibacterial Activity ◽  
Graphene Oxide
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