scholarly journals Toxicity assessment of reduced graphene oxide and titanium dioxide nanomaterials on gram-positive and gram-negative bacteria under normal laboratory lighting condition

2020 ◽  
Vol 7 ◽  
pp. 693-699 ◽  
Author(s):  
N.S. Ahmad ◽  
N. Abdullah ◽  
F.M. Yasin
Keyword(s):  
Titanium Dioxide ◽  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Toxicity Assessment ◽  
Gram Negative Bacteria ◽  
Gram Positive ◽  
Lighting Condition ◽  
Gram Negative ◽  
Reduced Graphene ◽  
Normal Laboratory

Efficient capture and photothermal ablation of planktonic bacteria and biofilms using reduced graphene oxide–polyethyleneimine flexible nanoheaters

2019 ◽  
Vol 7 (17) ◽  
pp. 2771-2781 ◽  
Author(s):  
Milica Budimir ◽  
Roxana Jijie ◽  
Ran Ye ◽  
Alexandre Barras ◽  
Sorin Melinte ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Gram Positive ◽  
Nanohole Array ◽  
Gram Negative ◽  
Planktonic Bacteria ◽  
Photothermal Ablation ◽  
Reduced Graphene

A flexible nanoheater device, consisting of a Au nanohole array coated with reduced graphene oxide–polyethyleneimine, was applied to capture and eradicate both Gram-positive and Gram negative planktonic bacteria and their biofilms.

scholarly journals Reduced graphene oxide-chitosan flexible nanocomposites for efficient bacteria capture and photothermal ablation

2020 ◽  
Vol 5 (1) ◽  
pp. 5-12
Author(s):  
Milica Budimir ◽  
Duška Kleut ◽  
Biljana Todorovic Markovic ◽  
Rabah Boukherroub
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Electrostatic Interactions ◽  
Near Infrared ◽  
Bacterial Strains ◽  
Gram Positive ◽  
Antibiotic Resistant ◽  
Gram Negative ◽  
Photothermal Ablation ◽  
Reduced Graphene

AbstractOne of the major public health concerns today is bacterial infection-associated diseases. Traditional antibacterial therapies are becoming less efficient because frequent and inadequate use of antibiotics has caused mutations in bacteria that led to many antibiotic-resistant bacterial strains. It is, therefore, crucial to develop novel antibacterial materials and strategies that will successfully combat both gram-positive and gram-negative bacteria. In the present study, we will demonstrate a simple and efficient method for bacteria capture and elimination through photothermal ablation. The developed material consists of a flexible Kapton substrate, coated with reduced graphene oxide-chitosan (rGO-CS) thin films. Reduced graphene oxide has strong absorption in the near-infrared (NIR) region, while chitosan has the ability to bind bacteria through electrostatic interactions. The K/rGO-CS device proved to capture and efficiently eradicate both planktonic Gram-positive Staphylococcus aureus (S. aureus) and Gram-negative Escherichia coli (E. coli) bacteria after 10 min of NIR (980 nm) irradiation.

scholarly journals Graphene oxide exhibits differential mechanistic action towards Gram-positive and Gram-negative bacteria

2019 ◽  
Vol 181 ◽  
pp. 6-15 ◽  
Author(s):  
Thiruchelvi Pulingam ◽  
Kwai Lin Thong ◽  
Md. Eaqub Ali ◽  
Jimmy Nelson Appaturi ◽  
Ignatius Julian Dinshaw ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Gram Negative Bacteria ◽  
Gram Positive ◽  
Gram Negative
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