Few layered graphene Sheet decorated by ZnO Nanoparticles for anti-bacterial application

Bykkam, Satish; Narsingam, Sowmya; Ahmadipour, Mohsen; Dayakar, T.; Rao, K. Venkateswara; Chakra, Ch. Shilpa; Shanker, Kalakotla

doi:10.1016/j.spmi.2015.03.063

Cited by 47 publications

(14 citation statements)

References 42 publications

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“…The mechanism of graphene's bactericidal action is directly related to the sharp edges of the sheets, which cause the mechanical destruction of cell membranes. Thus, smoothing the edges leads to the deactivation of the antimicrobial action [58]. The zone of growth inhibition for Escherichia coli when exposed to nanogold may also result from the impairment of proteins, lipids and nucleic acids present in bacterial cell membranes [59,60].…”

Section: Resultsmentioning

confidence: 99%

Synthesis of Silver and Gold Nanoparticles in Sodium Alginate Matrix Enriched with Graphene Oxide and Investigation of Properties of the Obtained Thin Films

et al. 2021

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Polymer nanocomposites containing nanometals became a subject of interest due to their bactericidal properties. Different polysaccharides have been used as matrices for nanosilver and nanogold synthesis. In this study, we present a novel, environmentally friendly method for the preparation of sodium alginate/nanosilver/graphene oxide (GOX) and sodium alginate/nanogold/graphene oxide GOX nanocomposites and their characteristics. The formation of approximately 10–20 nm ball-shaped Ag and Au nanoparticles was confirmed by UV–vis spectroscopy, scanning electron microscopy (SEM) and Fourier transform infrared (FTIR) spectra. The incorporation of GOX sheets within the ALG matrix improved the thermal stability of the nanocomposites film, which was measured using the differential scanning calorimetry (DSC). We also estimated the molecular weights of polysaccharide chains of the matrix with the size exclusion chromatography coupled with multiangle laser light scattering and refractometric detectors (HPSEC-MALLS-RI). The composites were more prone to enzymatic hydrolysis. The strongest bacteriostatic activity was observed for the sample containing nanosilver.

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Section: Resultsmentioning

confidence: 99%

Synthesis of Silver and Gold Nanoparticles in Sodium Alginate Matrix Enriched with Graphene Oxide and Investigation of Properties of the Obtained Thin Films

et al. 2021

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“…However, it can only be activated under UV irradiation because of a wide bandgap and it also exhibits reduced photo-catalytic efficiency due to a high recombination rate of the photo-generated holes/electrons [147,148]. To conquer these shortcomings, several studies on the preparation of GO/rGO-ZnO composites with improved antibacterial activity have been reported [74,75,149,150,151]. Wang et al [152] prepared GO-ZnO composites by a facile one-pot reaction to achieve superior antibacterial property with a very low effect on the HeLa cell viability in different concentrations, which is attributed to the synergetic effect of ZnO NPs and GO (Figure 3A,B).…”

Section: Graphene-based Composite Antibacterial Materialsmentioning

confidence: 99%

Antibacterial Properties of Graphene-Based Nanomaterials

et al. 2019

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Bacteria mediated infections may cause various acute or chronic illnesses and antibiotic resistance in pathogenic bacteria has become a serious health problem around the world due to their excessive use or misuse. Replacement of existing antibacterial agents with a novel and efficient alternative is the immediate demand to alleviate this problem. Graphene-based materials have been exquisitely studied because of their remarkable bactericidal activity on a wide range of bacteria. Graphene-based materials provide advantages of easy preparation, renewable, unique catalytic properties, and exceptional physical properties such as a large specific surface area and mechanical strength. However, several queries related to the mechanism of action, significance of size and composition toward bacterial activity, toxicity criteria, and other issues are needed to be addressed. This review summarizes the recent efforts that have been made so far toward the development of graphene-based antibacterial materials to face current challenges to combat against the bacterial targets. This review describes the inherent antibacterial activity of graphene-family and recent advances that have been made on graphene-based antibacterial materials covering the functionalization with silver nanoparticles, other metal ions/oxides nanoparticles, polymers, antibiotics, and enzymes along with their multicomponent functionalization. Furthermore, the review describes the biosafety of the graphene-based antibacterial materials. It is hoped that this review will provide valuable current insight and excite new ideas for the further development of safe and efficient graphene-based antibacterial materials.

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“…Moreover, it reduces friction and wear and possesses favorable tribological properties, high conductivity, and large surface area [ 155 , 156 , 157 , 158 ]. Graphene can also be utilized as a substrate for the stabilization and dispersion of antibacterial NPs; for instance, Ag, Fe 3 O 4 , TiO 2 and ZnO [ 159 , 160 , 161 ]. It can be converted into many different forms like fullerenes, a zero-dimensional (0D) nanomaterial, one-dimensional (1D) nanotube or a 3D graphite.…”

Section: Specific Nanostructures Incorporated In Gicsmentioning

confidence: 99%

Effect of Nanostructures on the Properties of Glass Ionomer Dental Restoratives/Cements: A Comprehensive Narrative Review

et al. 2021

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Overall perspective of nanotechnology and reinforcement of dental biomaterials by nanoparticles has been reported in the literature. However, the literature regarding the reinforcement of dental biomaterials after incorporating various nanostructures is sparse. The present review addresses current developments of glass ionomer cements (GICs) after incorporating various metallic, polymeric, inorganic and carbon-based nanostructures. In addition, types, applications, and implications of various nanostructures incorporated in GICs are discussed. Most of the attempts by researchers are based on the laboratory-based studies; hence, it warrants long-term clinical trials to aid the development of suitable materials for the load bearing posterior dentition. Nevertheless, a few meaningful conclusions are drawn from this substantial piece of work; they are as follows: (1) most of the nanostructures are likely to enhance the mechanical strength of GICs; (2) certain nanostructures improve the antibacterial activity of GICs against the cariogenic bacteria; (3) clinical translation of these promising outcomes are completely missing, and (4) the nanostructured modified GICs could perform better than their conventional counterparts in the load bearing posterior dentition.

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Few layered graphene Sheet decorated by ZnO Nanoparticles for anti-bacterial application

Cited by 47 publications

References 42 publications

Synthesis of Silver and Gold Nanoparticles in Sodium Alginate Matrix Enriched with Graphene Oxide and Investigation of Properties of the Obtained Thin Films

Synthesis of Silver and Gold Nanoparticles in Sodium Alginate Matrix Enriched with Graphene Oxide and Investigation of Properties of the Obtained Thin Films

Antibacterial Properties of Graphene-Based Nanomaterials

Effect of Nanostructures on the Properties of Glass Ionomer Dental Restoratives/Cements: A Comprehensive Narrative Review

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