Synthesis and structural characterisation of CdS nanoparticles prepared in a four-components “water-in-oil” microemulsion

Agostiano, Angela; Catalano, M.; Curri, M. Lucia; Monica, M. Della; Manna, Liberato; Vasanelli, L.

doi:10.1016/s0968-4328(99)00091-8

Cited by 78 publications

(50 citation statements)

References 30 publications

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“…Two samples at P 0 = 14, W 0 = 20 (P14W20) and P 0 = 8, W 0 = 20 (P8W20), having different size and size distribution (18)(19), have been prepared. In particular, previously reported TEM results (17)(18) have shown particles with average size of 2.5 ± 0.5 nm and 3.5 ± 0.5 nm for samples P8W20 and P14W20, respectively.…”

Section: Methodsmentioning

confidence: 66%

“…The molar ratio between water and surfactant (W 0 ) and that between alcohol and surfactant (P 0 ) and the surfactant molar concentration (CTAB), are the three parameters necessary to define the composition of the four-component microemulsion (15) Colloidal CdS particles have been prepared by rapidly mixing equal volumes of two micellar solutions containing cadmium and sulfide salts, respectively, at given P 0 and W 0 values. Because of the dynamic properties of reverse micelles, the reaction occurs in few seconds and immediately after mixing the micellar solutions, CdS nanoparticles are formed (16)(17). Two samples at P 0 = 14, W 0 = 20 (P14W20) and P 0 = 8, W 0 = 20 (P8W20), having different size and size distribution (18)(19), have been prepared.…”

Section: Methodsmentioning

confidence: 99%

“…The CdS powder has been extracted from the quaternary microemulsion by means of the extraction procedure described elsewhere (17,18). The XRD patterns of the CdS powder have been collected with a Philips 1880 diffractometer in conventional θ -2θ reflection geometry by using filtered CuK α radiation (λ = 1.54051Å).…”

Section: Methodsmentioning

confidence: 99%

“…In particular, an improved synthetic route that exploits, for the first time, a quaternary water-in-oil microemulsion (15), has been proposed by the authors to obtain CdS nanocrystals of high crystalline quality, small dimensions, and a high degree of monodispersity (16,17). The presence of pentanol, the co-surfactant in the quaternary microemulsion, proves to be a key factor in regulating the size, the size distribution, and the stability of the crystallites.…”

Section: Introductionmentioning

confidence: 99%

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CdS Nanocrystals from a Quaternary Water-in-Oil Microemulsion: Preparation and Characterization of Self-Assembled Layers

Curri¹,

Alvisi

Agostiano

et al. 2001

Journal of Colloid and Interface Science

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Section: Methodsmentioning

confidence: 66%

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

CdS Nanocrystals from a Quaternary Water-in-Oil Microemulsion: Preparation and Characterization of Self-Assembled Layers

Curri¹,

Alvisi

Agostiano

et al. 2001

Journal of Colloid and Interface Science

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“…Limiting the attention to wet chemistry approaches, a wide plethora of synthetic routes has been proposed in the literature to prepare metal sulphide colloids ranging from non-aqueous sol-gel routes [70][71][72][73], hydro/solvothermal [24,[74][75][76][77][78][79][80][81][82][83][84][85][86], to sono- [19, and radiochemistry [111][112][113][114][115][116][117], laser ablation [118,119], micro- [120][121][122][123][124][125][126][127][128][129][130] and miniemulsion synthesis [131][132][133][134][135][136][137][138], seeded-growth [139] and nucleation/g...…”

Section: Transition Metal Sulphides: Analogies and Differences With Rmentioning

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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Preparation of poly(methyl methacrylate) nanocomposites with superior impact strength

Singh

Jayasimha

et al. 2007

J of Applied Polymer Sci

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A chemically stable syrup of poly(methyl methacrylate) in its monomer was prepared with a suitable dual-initiating system. Nanoalumina particles were prepared by the autoignition of aluminum nitrate with urea and were made compatible with the organic medium by chemical modification with methacrylol isocyanate. The polymer syrup prepared in this way was applied between two poly(methyl methacrylate) sheets (each 10 cm 3 10 cm 3 2 mm), and the composite thus prepared was tested with a bullet-firing machine and a drop-weight-impact testing machine. The impact strength measurements of the two-plate composite from both of these procedures showed that the impact resistance doubled in the case of nanoalumina. The modeling of the damage to the multilayered composite by the critical impact energy was performed with the relation E ¼ pn 2 1 qn 1 r, where E is the impact energy, p, q, and r are constants, and n is the number of layers. Experiments showed that the presence of nanoparticles in the adhesive increased the value of the constants. The 10-layer composite was further tested with a 0.32 Indian Ordinance Factory (IOF) revolver with a bullet mass of 9.9 g and a muzzle velocity of 236 6 7 m/s (muzzle energy ¼ 275 J) from a 10-m distance, which produced an ordinary indentation with no penetration.

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Synthesis and structural characterisation of CdS nanoparticles prepared in a four-components “water-in-oil” microemulsion

Cited by 78 publications

References 30 publications

CdS Nanocrystals from a Quaternary Water-in-Oil Microemulsion: Preparation and Characterization of Self-Assembled Layers

CdS Nanocrystals from a Quaternary Water-in-Oil Microemulsion: Preparation and Characterization of Self-Assembled Layers

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

Preparation of poly(methyl methacrylate) nanocomposites with superior impact strength

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