MoS2/Ag nanocomposites for electrochemical sensing and photocatalytic degradation of textile pollutant

Krishnan, Unni; Kaur, Manjot; Singh, Kulwinder; Kaur, Gurpreet; Singh, Paviter; Kumar, Manish; Kumar, Akshay

doi:10.1007/s10854-018-00653-7

Cited by 21 publications

(2 citation statements)

References 59 publications

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“…Degradation by photocatalysis is used in the degradation of colorants/organic pollutants [37][38][39][40][41][42]. Different metals and metallic oxides nanoparticles, e.g., Co-doped ZnO nanoparticles, have been successfully utilized under visible light in the degradation of organic toxic pollutants [43], Fe 2 O 3 nanoparticles [35], TiO 2 nanoparticles [44], polyoxometalate hybrid sustained on magnetic activated carbon, Au-FeS 2 nanocomposites and MoS 2 /Ag nanocomposite [45,46]. Photocatalysis is one of the probable strategies utilized in degrading the toxicity level of organic dyes to CO 2 and H 2 O and conversion to other harmless inorganic complexes without producing secondary pollutants.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and Characterization of Silver and Graphene Nanocomposites and Their Antimicrobial and Photocatalytic Potentials

et al. 2022

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Microbial pathogens and bulk amounts of industrial toxic wastes in water are an alarming situation to humans and a continuous threat to aquatic life. In this study, multifunctional silver and graphene nanocomposites (Ag)1−x(GNPs)x [25% (x = 0.25), 50% (x = 0.50) and 75% (x = 0.75) of GNPs] were synthesized via ex situ approach. Further, the synthesized nanocomposites were explored for their physicochemical characteristics, such as vibrational modes (Raman spectroscopic analysis), optical properties (UV visible spectroscopic analysis), antibacterial and photocatalytic applications. We investigated the antimicrobial activity of silver and graphene nanocomposites (Ag-GNPs), and the results showed that Ag-GNPs nanocomposites exhibit remarkably improved antimicrobial activity (28.78% (E. coli), 31.34% (S. aureus) and 30.31% (P. aeruginosa) growth inhibition, which might be due to increase in surface area of silver nanoparticles (AgNPs)). Furthermore, we investigated the photocatalytic activity of silver (AgNPs) and graphene (GNPs) nanocomposites in varying ratios. Interestingly, the Ag-GNPs nanocomposites show improved photocatalytic activity (78.55% degradation) as compared to AgNPs (54.35%), which can be an effective candidate for removing the toxicity of dyes. Hence, it is emphatically concluded that Ag-GNPs hold very active behavior towards the decolorization of dyes and could be a potential candidate for the treatment of wastewater and possible pathogenic control over microbes. In the future, we also recommend different other in vitro biological and environmental applications of silver and graphene nanocomposites.

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Section: Introductionmentioning

confidence: 99%

Synthesis and Characterization of Silver and Graphene Nanocomposites and Their Antimicrobial and Photocatalytic Potentials

et al. 2022

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“…Atomically thin 2D materials with strong spin–orbit interaction are attracting significant interest due to their novel optoelectronic, , electrochemical, quantum, , electrical, and optical properties. − Among these 2D materials, transition metal dichalcogenides (TMDs) are an exciting class of materials that exhibit many interesting properties, including indirect to direct band gaps at monolayer limit, large exciton binding energies, and charge density waves that arise from quantum confinement effects . In these materials, transition-metal atoms are sandwiched by identical chalcogen atoms (S, Se, Te) at the top and bottom layers.…”

Section: Introductionmentioning

confidence: 99%

Monolayer Excitonic Semiconductors Integrated with Au Quasi-Periodic Nanoterrace Morphology on Fused Silica Substrates for Light-Emitting Devices

Chen

Blei

et al. 2020

ACS Appl. Nano Mater.

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Two-dimensional transition metal dichalcogenides (TMDs) have a promising future in the nanophotonics field due to their unique optoelectronic properties such as large exciton binding energies and carrier mobility. Among these properties, monolayer TMDs exhibit enhanced photoluminescence (PL) by utilizing micro-/nanostructure surface plasmon polariton (SPP) modes. In this work, we present a unique technique to achieve substantial PL enhancement by integrating MoS2 monolayers to gold quasi-periodic nanoterrace morphology with gradient periods on fused silica substrates. Gold quasi-periodic nanostructures were fabricated through cost-effective and fast ion bombardment with iron co-deposition followed by a gold coating technique, and monolayers were deposited by a polymer-assisted technique. Our results show clear evidence that the light emission is enhanced due to the SPP modes produced by the quasi-periodic nanoterrace morphology. Comprehensive spectroscopy studies were performed on monolayer flakes with different laser polarizations, morphology periods, and temperatures to offer detailed insights on the mechanism behind PL enhancement. Together with numerical simulations, our results provided a basis for understanding the PL enhancement effects and shed light on future directions of high-efficiency light-emitting devices such as diodes, lasers, and heterostructure solar cells based on TMD monolayers.

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MoS2 Based Nanocomposites for Treatment of Industrial Effluents

Kaur

Krishnan

Kumar

2021

Metal, Metal-Oxides and Metal-Organic Frameworks for Environmental Remediation

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MoS2/Ag nanocomposites for electrochemical sensing and photocatalytic degradation of textile pollutant

Cited by 21 publications

References 59 publications

Synthesis and Characterization of Silver and Graphene Nanocomposites and Their Antimicrobial and Photocatalytic Potentials

Synthesis and Characterization of Silver and Graphene Nanocomposites and Their Antimicrobial and Photocatalytic Potentials

Monolayer Excitonic Semiconductors Integrated with Au Quasi-Periodic Nanoterrace Morphology on Fused Silica Substrates for Light-Emitting Devices

MoS2 Based Nanocomposites for Treatment of Industrial Effluents

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