Antibacterial potential of electrochemically exfoliated graphene sheets
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AuthorsMarković, Zoran M.
Matijasevic, Danka M.
Pavlović, Vladimir B.
Jovanović, Svetlana P.
Holclajtner-Antunović, Ivanka D.
Niksic, Miomir P.
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Electrochemically exfoliated graphene is functionalized graphene with potential application in biomedicine. Two most relevant biological features of this material are its electrical conductivity and excellent water dispersibility. In this study we have tried to establish the correlation between graphene structure and its antibacterial properties. The exfoliation process was performed in a two electrode-highly oriented pyrolytic graphite electrochemical cell. Solution of ammonium persulfate was used as an electrolyte. Exfoliated graphene sheets were dispersed in aqueous media and characterized by atomic force microscopy, scanning electron microscopy, Raman spectroscopy, Fourier transform infrared spectroscopy, X photoelectron spectroscopy, X-ray diffraction, electron paramagnetic resonance, zeta potential, contact angle measurements and surface energy. Antibacterial assays have shown lack of the significant antibacterial activity. Major effect on bacteria was slight change of bacteria m...orphology. Membrane remained intact despite significant change of chemical content of membrane components. (C) 2017 Elsevier Inc. All rights reserved.
Keywords:Exfoliated graphene / Antibacterial tests / Scanning electron microscopy / Atomic force microscopy / X-photoelectron spectroscopy
Source:Journal of Colloid and Interface Science, 2017, 500, 30-43
- Thin films of single wall carbon nanotubes and graphene for electronic application (RS-172003)
- Novel encapsulation and enzyme technologies for designing of new biocatalysts and biologically active compounds targeting enhancement of food quality, safety and competitiveness (RS-46010)
- SASPRO - Mobility Programme of Slovak Academy of Sciences: Supportive Fund for Excellent Scientists (EU-609427)
- SASPRO Programme project [1237/02/02-b], Slovak Academy of Sciences, bilateral project Serbia-Slovakia [SK-SRB-2016-0038], multilateral scientific and technological cooperation in the Danube region [DS021], VEGA [2/0093/16]