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

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

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

Antibacterial hybrid cellulose–graphene oxide nanocomposite immobilized with silver nanoparticles

RSC Advances ◽  
2015 ◽  
Vol 5 (33) ◽  
pp. 26263-26268 ◽  
Author(s):  
Soon Wei Chook ◽  
Chin Hua Chia ◽  
Sarani Zakaria ◽  
Mohd Khan Ayob ◽  
Nay Ming Huang ◽  
...  
Keyword(s):  
Silver Nanoparticles ◽  
Antibacterial Activity ◽  
Graphene Oxide ◽  
Porous Structure ◽  
Regenerated Cellulose ◽  
Cellulose Membrane

An antibacterial hybrid GO–AgNPs cellulose membrane was prepared. Incorporation of GO created a more porous structure of the regenerated cellulose membrane, improved the deposition of AgNPs and demonstrated an effective antibacterial activity with minimal release of Ag ions.

Nanohybrids of silver nanoparticles grown in-situ on a graphene oxide silver ion salt: simple synthesis and their enhanced antibacterial activity

2019 ◽  
Vol 34 (5) ◽  
pp. 426-433 ◽  
Author(s):  
Kai-rong Xiong ◽  
Ye-ru Liang ◽  
Yi Ou-yang ◽  
Ding-cai Wu ◽  
Ruo-wen Fu
Keyword(s):  
Silver Nanoparticles ◽  
Antibacterial Activity ◽  
Graphene Oxide ◽  
Silver Ion ◽  
Simple Synthesis

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

scholarly journals Evaluating the Antibacterial Activity of AgGO Nanocomposite Against Clinical Isolate Bacteria

2019 ◽  
Vol 54 (6) ◽  
Author(s):  
Marwah Al-Ogaidi ◽  
Israa Al-Ogaidi
Keyword(s):  
Silver Nanoparticles ◽  
Antibacterial Activity ◽  
Graphene Oxide ◽  
Laser Ablation ◽  
Silver Nanoparticle ◽  
Pathogenic Bacteria ◽  
Fourier Transforms ◽  
Gram Positive Bacteria ◽  
Laser Ablation Method ◽  
Fast Synthesis

This study discusses the synthesis, characterization, and activity of silver nanoparticles, along with silver graphene oxide, against pathogenic bacteria. Silver nanoparticles are prepared by laser ablation and fabricated with silver graphene oxide. The synthesized silver nanoparticles and silver graphene oxide were characterized through UV-Vis spectrophotometer, Fourier-transforms spectroscopy, and zeta potential. The antimicrobial performance of silver nanoparticles and silver graphene oxide nanoparticles were monitored by the contradiction of gram-negative bacteria (Escherichia.coli and Acenetobacter bumannii), and gram positive bacteria: Staphylococcus aureus. Different concentrations of silver and silver graphene oxide have been investigated to monitor their antibacterial activity against bacterial isolates. The results indicate that the nanocomposites have antibacterial activity and the antibacterial effect increases with increased concentration of nanocomposites. Laser ablation method, a fast synthesis technique, has been used in the current study to prepare silver nanoparticle and silver nanoparticle-graphene oxide nanocomposites.

Nanohybrids of silver nanoparticles grown in-situ on a graphene oxide silver ion salt: simple synthesis and their enhanced antibacterial activity

Carbon ◽  
2020 ◽  
Vol 158 ◽  
pp. 930
Author(s):  
Kai-rong Xiong ◽  
Ye-ru Liang ◽  
Yi Ou-yang ◽  
Ding-cai Wu ◽  
Ruo-wen Fu
Keyword(s):  
Silver Nanoparticles ◽  
Antibacterial Activity ◽  
Graphene Oxide ◽  
Silver Ion ◽  
Simple Synthesis
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