Luminescent nanoparticles of Mn doped ZnS passivated with sodium hexametaphosphate

Warad, H.C.; Ghosh, Surajit; Hemtanon, B.; Thanachayanont, Chanchana; Dutta, Joydeep

doi:10.1016/j.stam.2005.03.006

Cited by 164 publications

(67 citation statements)

References 22 publications

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“…Further growth in the size is due to agglomeration of these crystallites to form bulk particles. If this growth of the particle is not controlled, then due to Ostwald ripening and Vander Waals interactions between particles, they get agglomerated [3][4]. This agglomeration can be avoided by stabilizing them electrostatically at appropriate stages to achieve size selective synthesis during precipitation reaction.…”

Section: Introductionmentioning

confidence: 99%

Synthesis, Structural and Optical Properties of PVP Encapsulated CdS Nanoparticles

Saravanan

Diwakar

Mohankumar

et al. 2011

Nanomaterials and Nanotechnology

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Highly monodispersed CdS nanoparticles using polyvinyl pyrrolidone (PVP) as the capping agent were synthesised by chemical coprecipitation method. The surface-modified cadmium sulfide nanoparticles were found to be remarkably stable. In the presence of PVP, cubic phase with small grain size of CdS were observed in XRD. The peaks were identified to originate from (111), (220) and (311) planes of CdS, respectively. The crystallite size of the synthesised CdS nanoparticles was about 3 nm calculated from the (111) plane of XRD pattern and it was also confirmed through HRTEM. Morphology and elemental mapping of the synthesised nanoparticles were studied by SEM and EDX analyses. Increase in the band gap with decrease in the particle size was observed from the reflectance mode UV spectrum, which confirms the quantum confinement effect. From the photoluminescence studies, enhanced near-band-edge blue light emission and significantly reduced defect-related green emission were observed. Longitudinal optical (LO) phonon modes, corresponds to pure CdS were observed in Raman spectrum.

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Section: Introductionmentioning

confidence: 99%

Synthesis, Structural and Optical Properties of PVP Encapsulated CdS Nanoparticles

Saravanan

Diwakar

Mohankumar

et al. 2011

Nanomaterials and Nanotechnology

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“…Little attention has been instead paid to sulphide NCs, though some contribution focus on both their synthesis [261][262][263][264][265][266][267] as well as on their surface chemistry [152,262,[268][269][270][271][272][273].…”

Section: The Surface Of Transition Metal Sulphides: Bulk and Nanocrysmentioning

confidence: 99%

Functionalisation of Colloidal Transition Metal Sulphides Nanocrystals: A Fascinating and Challenging Playground for the Chemist

2017

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Abstract:Metal sulphides, and in particular transition metal sulphide colloids, are a broad, versatile and exciting class of inorganic compounds which deserve growing interest and attention ascribable to the functional properties that many of them display. With respect to their oxide homologues, however, they are characterised by noticeably different chemical, structural and hence functional features. Their potential applications span several fields, and in many of the foreseen applications (e.g., in bioimaging and related fields), the achievement of stable colloidal suspensions of metal sulphides is highly desirable or either an unavoidable requirement to be met. To this aim, robust functionalisation strategies should be devised, which however are, with respect to metal or metal oxides colloids, much more challenging. This has to be ascribed, inter alia, also to the still limited knowledge of the sulphides surface chemistry, particularly when comparing it to the better established, though multifaceted, oxide surface chemistry. A ground-breaking endeavour in this field is hence the detailed understanding of the nature of the complex surface chemistry of transition metal sulphides, which ideally requires an integrated experimental and modelling approach. In this review, an overview of the state-of-the-art on the existing examples of functionalisation of transition metal sulphides is provided, also by focusing on selected case studies, exemplifying the manifold nature of this class of binary inorganic compounds.

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“…Finally the maximum zone of inhibition were observed at 60 µl concentration for P.aeruginosa (22 mm) and minimum zone of inhibition was observed B.subtilis (18 mm) and A.niger (15 mm), so the in vitro antimicrobial activity of biosynthesized zinc sulphide leaf extract was high excellent activity against all tested microcrganisms, the tridaxprocumbens various plant parts are used to found antimicrobial agents 33 there are so many plants are have high antimicrobial activity because of their zone of inhibition against bacteria and fungus 34 Biosynthesis is good and new field of research because it's from natural sources 35 .…”

Section: Fig 5: Antimicrobial Activity Of Zns Nanoparticles Using Lementioning

confidence: 99%

Biosynthesis and Characterization of Zinc Sulphide Nanoparticles Using Leaf Extracts of Tridaxprocumbens

Sathishkumar¹,

Saroja²,

Venkatachalam³

et al. 2017

Orient. J. Chem

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In this paper, we discussed biosynthesized and characterization of zinc sulphide nanoparticles using tridaxprocumbens leaf extract by green synthesis method. This study focuses on the production of ZnS nanoparticles using tridaxprocumbens plant of methanol leaf extracts and analysis the antimicrobial activity. The formation of zinc sulphidenanoparticleswas characterized by using numerous analytical techniques such asScanning electron microscopy(SEM), Fourier transform infrared spectroscopy(FT-IR), X-ray powder diffraction (XRD) and UV-Visible spectroscopy (UV-Vis). The results showed that the leaf extract for the synthesis zinc sulphide nanoparticles to have the ability to inhibit the growth of various pathogenic microorganisms. The synthesized zinc sulphide nanoparticles can be used for various applications due to its ecofriendly,non-toxic and compatibility for pharmaceutical and other applications.

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Luminescent nanoparticles of Mn doped ZnS passivated with sodium hexametaphosphate

Cited by 164 publications

References 22 publications

Synthesis, Structural and Optical Properties of PVP Encapsulated CdS Nanoparticles

Synthesis, Structural and Optical Properties of PVP Encapsulated CdS Nanoparticles

Functionalisation of Colloidal Transition Metal Sulphides Nanocrystals: A Fascinating and Challenging Playground for the Chemist

Biosynthesis and Characterization of Zinc Sulphide Nanoparticles Using Leaf Extracts of Tridaxprocumbens

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