Issue 55, 2018

Photo-induced antibacterial activity of four graphene based nanomaterials on a wide range of bacteria

Abstract

Due to controversial reports concerning antibacterial activity of different graphene based materials it is very important to investigate their antibacterial action on a wide range of Gram-positive and Gram-negative bacteria. In this paper we have investigated the structure induced phototoxic antibacterial activity of four types of graphene based materials: graphene oxide (GO), graphene quantum dots (GQDs), carbon quantum dots (CQDs) and nitrogen doped carbon quantum dots (N-CQDs). Antibacterial activity was tested on 19 types of bacteria. It is found that nanometer-size CQDs and N-CQDs are the most potent agents whereas micrometer-size GO has very poor antibacterial activity. Electron paramagnetic resonance measurements confirmed photodynamic production of singlet oxygen for all types of used quantum dots. Detailed analysis has shown that N-CQDs are an excellent photodynamic antibacterial agent for treatment of bacterial infections induced by Enterobacter aerogenes (E. aerogenes), Proteus mirabilis (P. mirabilis), Staphylococcus saprophyticus (S. saprophyticus), Listeria monocytogenes (L. monocytogenes), Salmonella typhimurium (S. typhimurium) and Klebsiella pneumoniae.

Graphical abstract: Photo-induced antibacterial activity of four graphene based nanomaterials on a wide range of bacteria

Supplementary files

Article information

Article type
Paper
Submitted
31 mai 2018
Accepted
24 ago 2018
First published
05 set 2018
This article is Open Access
Creative Commons BY-NC license

RSC Adv., 2018,8, 31337-31347

Photo-induced antibacterial activity of four graphene based nanomaterials on a wide range of bacteria

Z. M. Marković, S. P. Jovanović, P. Z. Mašković, M. Danko, M. Mičušík, V. B. Pavlović, D. D. Milivojević, A. Kleinová, Z. Špitalský and B. M. Todorović Marković, RSC Adv., 2018, 8, 31337 DOI: 10.1039/C8RA04664F

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