Antibacterial Activity of Graphene Oxide Nanosheets

Krishnamoorthy, Karthikeyan; Umasuthan, Navaneethaiyer; Mohan, Rajneesh; Lee, Jehee; Kim, Sang‐Jae

doi:10.1166/sam.2012.1402

Cited by 126 publications

(86 citation statements)

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“…41 Oxidative stress is due to the overproduction of reactive oxygen species in the bacterial cells by the nanoparticle exposure. 40 The mechanism of antibacterial activity of the prepared TiO 2 nanopaint is due to direct interaction between the bacteria and paint surface which can result in the membrane stress and cell death. The cell death by the oxidative stress can be ruled out in this study since ROS related mechanistic pathways for cell death are available only in free nanoparticles suspended in solution.…”

Section: Discussionmentioning

confidence: 99%

Preparation of TiO₂ nanopaint using ball milling process and investigation on its antibacterial properties

Subbiah¹,

Premanathan²,

Kim³

et al. 2014

mat express

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The development of nanomaterials based antibacterial coatings has received considerable attention towards the control and prevention of healthcare associated infections (HAIs). In this article, we are reporting the preparation of titanium oxide (TiO 2 ) nanopaint by embedding the TiO 2 nanoparticles in alkyd resin matrix (with other suitable non-toxic additives) using ball milling process. The Fourier transform-infra red spectroscopy and scanning electron microscope analysis revealed the incorporation of TiO 2 nanoparticles in the alkyd resin matrix of the paint. The TiO 2 nanopaint coatings are examined for their antibacterial properties against different types of bacterial strains viz. Pseudomonas aeruginosa, Staphylococcus aureus, and methicillin resistant Staphylococcus aureus (MRSA). The experimental results showed that the TiO 2 nanopaint coated surfaces inhibited about 85%, 90% and 76% of microbial population against Pseudomonas aeruginosa, Staphylococcus aureus and MRSA, respectively. We believe that our efforts ensure the potential applications of the TiO 2 nanopaint in the prevention of HAIs.

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Section: Discussionmentioning

confidence: 99%

Preparation of TiO₂ nanopaint using ball milling process and investigation on its antibacterial properties

Subbiah¹,

Premanathan²,

Kim³

et al. 2014

mat express

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“…9 The underlying mechanism in the observed case is most likely due to different degrees of hydrophobichydrophobic and ionic-ionic interactions between the PEM and the bacteria cell wall. The thick negatively charged peptidoglycan layer in case of gram positive bacteria is unlikely to adsorb on a negatively charged substrate, compared to a partly uncharged cell wall in case of gram negative bacteria.…”

Section: Effect Of Different Surfacesmentioning

confidence: 91%

“…The mechanism for the preference of a certain bacteria type in the observed is therefore very different from the one of graphene films, which's selectivity is due to the production of oxygen radicals. 9 Interestingly the reversed phenomena can be monitored for cross-linked negative charge terminated films, which prefer no bacteria type. The reason for this is the amino group in the cross-linking agent that influences not only the mechanical properties but also the PEM structure The PSS-PDDA films showed for both types of surface charge a very selective settlement of gram positive bacteria.…”

Section: Effect Of Different Surfacesmentioning

confidence: 99%

“…4 5 Since copper and their organic boosters pose also a considerable harm to the environment, several alternatives to heavy metal and nanoparticle based coatings have been developed. [6][7][8][9] These alternatives are, for example based on biodegradable additives. 10 Besides chemical based antifouling coatings, so called fouling release coatings, based on purely physical effects; like mechanically soft surfaces, low surface tension or structures that prevent * Authors to whom correspondence should be addressed.…”

Section: Introductionmentioning

confidence: 99%

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Influence of Polyelectrolyte Multilayer Coating on the Degree and Type of Biofouling in Freshwater Environment

Frueh¹,

Gai²,

Yang³

et al. 2014

j. nanosci. nanotech.

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Biofouling is one of the biggest problems of water-borne systems. Since not only marine but also freshwater-based structures are affected, the biofouling in this environment is studied. The focus of this study lies on the antifouling properties of novel coating materials like polyelectrolyte multilayers (PEM) compared with currently used silicon rubber (PDMS) based fouling release coatings. The following article contains the results of a systematical screening of the mechanical, surface charge and surface nano-heterogeneous properties of the investigated PEM and PDMS systems. The results show that negatively charged non crosslinked and crosslinked PEM coated PDMS can surpass current PDMS based fouling release coatings. The PEM films are not only able to reduce the biofouling, but are additionally able to control the type of settled bacteria (gram positive or negative). The negative terminated surfaces inhibit the settlement of gram positive bacteria, whereby the positive terminated surfaces inhibit the settlement of gram negative bacteria.

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“…Owing to nano-sizes, it may interfere with several chemical processes taking place in cells. Such interactions may cause oxidative stress leading to bacterial cell death [19][20][21][22].…”

Section: Introductionmentioning

confidence: 99%

Study of photocatalytic and antibacterial activities of graphene oxide nanosheets

Singh

Bajaj

Bhardwaj

et al. 2018

Adv Compos Hybrid Mater

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Graphene oxide (GO) is a biocompatible material that is easily dispersible in water making its mixing easy with ceramic or polymer matrixes while trying to enhance their properties. In the present study, the photocatalytic and antibacterial activities of GO have been studied. GO has been synthesized by modified Hummer's method. The synthesized material has been characterized using X-ray diffraction, Raman spectroscopy, high-resolution transmission electron microscopy (HR-TEM), Fourier transform infrared spectroscopy (FT-IR) and UV-visible spectroscopy. HR-TEM confirmed the formation of GO nanosheets. It has been observed that GO nanosheets with excellent morphology exhibit efficient photocatalytic activity towards Congo red (CR) dye. Using advanced oxidation process, toxic organic dye CR is oxidized through reaction with reactive oxidative species generated by GO photocatalyst under UV-light irradiation. The study reflects new possibilities of GO for degradation of toxic organic pollutants. The effect of GO dose has also been studied and the reaction has been evaluated to be first order. Antibacterial activity of GO has been evaluated via well diffusion assay by growing Escherichia coli and Bacillus on LB agar plates.

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Antibacterial Activity of Graphene Oxide Nanosheets

Cited by 126 publications

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Preparation of TiO₂ nanopaint using ball milling process and investigation on its antibacterial properties

Preparation of TiO₂ nanopaint using ball milling process and investigation on its antibacterial properties

Influence of Polyelectrolyte Multilayer Coating on the Degree and Type of Biofouling in Freshwater Environment

Study of photocatalytic and antibacterial activities of graphene oxide nanosheets

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Antibacterial Activity of Graphene Oxide Nanosheets

Cited by 126 publications

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Preparation of TiO2 nanopaint using ball milling process and investigation on its antibacterial properties

Preparation of TiO2 nanopaint using ball milling process and investigation on its antibacterial properties

Influence of Polyelectrolyte Multilayer Coating on the Degree and Type of Biofouling in Freshwater Environment

Study of photocatalytic and antibacterial activities of graphene oxide nanosheets

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Preparation of TiO₂ nanopaint using ball milling process and investigation on its antibacterial properties

Preparation of TiO₂ nanopaint using ball milling process and investigation on its antibacterial properties