Oxidative and membrane stress-mediated antibacterial activity of WS<sub>2</sub>and rGO-WS<sub>2</sub>nanosheets

Navale, Govinda R.; Rout, Chandra Sekhar; Gohil, Kushal; Dharne, Mahesh; Late, Dattatray J.; Shinde, Sandip S.

doi:10.1039/c5ra15652a

Cited by 87 publications

(50 citation statements)

References 44 publications

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“…Navale et al. compared the antibacterial ability of WS 2 nanosheets, rGO, and WS 2 ‐rGO nanocomposites . They found that although all the above materials can induce ROS‐independent oxidative stress and membrane rupture, WS 2 ‐rGO nanocomposites are capable of generating .…”

Section: Antibacterial Activity Of 2d Materials Beyond Gmsmentioning

confidence: 99%

Two‐Dimensional Materials for Antimicrobial Applications: Graphene Materials and Beyond

Sun

2018

Chemistry An Asian Journal

123

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Since the "birth" of graphene in 2004, two-dimensional (2D) materials have attracted unprecedented research interest from scientists and have stimulated numerous applications in various fields, such as electronic/optical devices, energy storage, catalysis, sensors, and biomedicine. In this review, we summarize recent advances in the antimicrobial applications of 2D materials, such as graphene materials (GMs), layered double hydroxides (LDHs), transition-metal dichalcogenides (TMDs), graphitic carbon nitride (g-C N ), MXenes, black phosphorus (BP), and their derivatives. This review also correlates the unique physicochemical properties of 2D materials with their antimicrobial activities. Finally, some current challenges and future perspectives in this field are also presented.

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Section: Antibacterial Activity Of 2d Materials Beyond Gmsmentioning

confidence: 99%

Two‐Dimensional Materials for Antimicrobial Applications: Graphene Materials and Beyond

Sun

2018

Chemistry An Asian Journal

123

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“…22 Shinde and co-workers also demonstrated that WS 2 can cause retardation in bacterial growth and inhibitory effect on bacterial strains. 40 On the other hand, there are also conicting reports in literature regarding these TMDCs' antibacterial activities. For instance, Chae and coworkers suggested that MoS 2 and WS 2 only displayed limited cytotoxicity and genotoxicity, with no signicant deleterious effect to cellular viability.…”

Section: -38mentioning

confidence: 99%

Membrane destruction-mediated antibacterial activity of tungsten disulfide (WS₂)

et al. 2017

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The antibacterial activities of tungsten disulfide (WS 2 ) nanosheets against two representative bacterial strains: Gram-negative Escherichia coli (E. coli) and Gram-positive Staphylococcus aureus (S. aureus)were evaluated by colony-forming unit (CFU) studies. The WS 2 samples demonstrate a time and concentration dependent antibacterial activity (retardation of bacterial growth) for both bacterial strains.Morphology analyses reveal that WS 2 nanosheets adhere to the bacterial surfaces, resulting in robust inhibition of cell proliferation once a bacterium is fully covered with this nanomaterial. More importantly, the intimate contact of WS 2 nanosheets with a bacterium cell membrane can cause serious damage to the membrane integrity, and subsequently the cell death. On the other hand, the reactive oxygen species (ROS) generated by WS 2 nanosheets are found to be modest regardless of the WS 2 concentration, which is contradictory to the case of its structural analogue, MoS 2 , where ROS also play a significant role in its antibacterial activity. Taken together, our findings provide a detailed understanding of the antibacterial mechanism of WS 2 nanosheets, which might help promote their potential applications in biomedical fields.

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“…The high antibacterial rates against S. aureus and E. coli indicated a quite high antibacterial efficiency of the WS 2 laminar membrane, even after short‐term contact (1 h). The proposed mechanism for this marked antibacterial property is that the WS 2 nanosheets retarded the bacterial growth by deformation of the bacterial cell and damage of the cell wall on the basis of the reported results …”

Section: Resultsmentioning

confidence: 78%

Highly Stable and Antibacterial Two‐Dimensional Tungsten Disulfide Lamellar Membrane for Water Filtration

et al. 2018

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Two‐dimensional (2D) lamellar membranes consisting of restacked WS2 nanosheets have shown excellent separation properties for water filtration. The stability, antifouling properties, and antibacterial activities of the WS2 laminar membranes were investigated for practical application. We discovered that the separation properties of the WS2 laminar membranes changed slightly after soaking in water for 28 days as well as that of a 45 h‐cross‐flow filtration, demonstrating an extraordinary operational stability of the WS2 laminar membranes. The remarkable stability is related to the dominant van der Waals interactions between WS2 nanosheets. In addition, the WS2 laminar membranes exhibited excellent antibacterial properties against S. aureus and E. coli with antibacterial rates of 91.3 % and 89.7 %, respectively. These properties of the WS2 laminar membranes make them promising candidates for application in water filtration.

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Oxidative and membrane stress-mediated antibacterial activity of WS₂and rGO-WS₂nanosheets

Abstract: We examined the antibacterial activities of nanosheets of the graphene analogue tungsten disulphide (WS2) and a composite of reduced graphene oxide-tungsten disulphide (rGO-WS2).

Cited by 87 publications

References 44 publications

Two‐Dimensional Materials for Antimicrobial Applications: Graphene Materials and Beyond

Two‐Dimensional Materials for Antimicrobial Applications: Graphene Materials and Beyond

Membrane destruction-mediated antibacterial activity of tungsten disulfide (WS₂)

Highly Stable and Antibacterial Two‐Dimensional Tungsten Disulfide Lamellar Membrane for Water Filtration

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Oxidative and membrane stress-mediated antibacterial activity of WS2and rGO-WS2nanosheets

Abstract: We examined the antibacterial activities of nanosheets of the graphene analogue tungsten disulphide (WS2) and a composite of reduced graphene oxide-tungsten disulphide (rGO-WS2).

Cited by 87 publications

References 44 publications

Two‐Dimensional Materials for Antimicrobial Applications: Graphene Materials and Beyond

Two‐Dimensional Materials for Antimicrobial Applications: Graphene Materials and Beyond

Membrane destruction-mediated antibacterial activity of tungsten disulfide (WS2)

Highly Stable and Antibacterial Two‐Dimensional Tungsten Disulfide Lamellar Membrane for Water Filtration

Contact Info

Product

Resources

About

Oxidative and membrane stress-mediated antibacterial activity of WS₂and rGO-WS₂nanosheets

Membrane destruction-mediated antibacterial activity of tungsten disulfide (WS₂)