Trends in the synthesis of metal oxide nanoparticles through reverse microemulsions in hydrocarbon media

Хаджиев, С. Н.; Kadiev, Khusain M.; Yampol’skaya, G. P.; Kadieva, M. Kh.

doi:10.1016/j.cis.2013.05.003

Cited by 79 publications

(45 citation statements)

References 96 publications

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“…In addition, the use of surfactants and the formation of titania in micellar compartments favours the stabilization of nanosized TiO 2 particles. [23][24][25]27,28 Despite the fact that non-ionic surfactants have several advantages (e.g. weak repulsion interactions, easy removal) the number of studies related to titania preparation by means of Triton-X is limited.…”

Section: 21mentioning

confidence: 99%

“…weak repulsion interactions, easy removal) the number of studies related to titania preparation by means of Triton-X is limited. 23,[28][29][30][31] Triton-X has been used basically in the preparation of titania by pressurized uid extraction and supercritical drying methods. 4,6,7,[32][33][34][35] Several studies have been published in which reverse micelles have been used in the synthesis of nanoporous materials.…”

Section: 21mentioning

confidence: 99%

“…53 The diameter of water droplets formed depends on the chain length of the Triton-X surfactant used 28 and it is obvious that surfactants with increased tail length form micelles with a higher diameter and inner-space diameter, as schematically shown in Fig. 10.…”

mentioning

confidence: 99%

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Tuning the porosity and surface characteristics of nanoporous titania using non-ionic surfactant reverse micelles

Paschalidou

Theocharis

2018

RSC Adv.

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Nanoporous titania was prepared from non-ionic surfactant reverse micelles (e.g. Triton-X) and the effects of the chain length of the surfactants and calcination temperature of the precursor gels on the surface properties of the product (mesoporous titania) were investigated. The studies included sample characterization of the precursor gels from the titania samples characterized by UV-Vis, ATR-FTIR, XRD, TGA/DSC and the titania samples by N 2 -adsorption BET, XRD, FT-IR, UV-Vis diffuse reflectance and SEM measurements after calcination at 400 C, 500 C, 600 C, 700 C and 800 C. According to the experimental results, generally increasing the length of the polar tail of Triton-X results in an increased specific surface area and volume, and an average pore diameter of the solids. Moreover, increasing the length of the polar tail is associated with a smaller crystallite size and higher thermal stability of the materials. Finally, a nucleation mechanism of the titania particles within the aqueous centre of the reversed micelles is proposed.

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Section: 21mentioning

confidence: 99%

Section: 21mentioning

confidence: 99%

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Tuning the porosity and surface characteristics of nanoporous titania using non-ionic surfactant reverse micelles

Paschalidou

Theocharis

2018

RSC Adv.

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“…Depending on the proportions of various components employed, a surfactant with specific hydrofilic-lypofilic balance (HLB) value is used. The microdroplets in the microemulsion can be in the form of oil-swollen micelles dispersed in an aqueous phase as o/w microemulsion or water-swollen micelles dispersed in oil phase as w/o microemulsion 6,7,8,9 . Nanoemulsions are non-equilibrium systems and cannot be formed spontaneously.…”

mentioning

confidence: 99%

Synthesis of Sorbitan Ester Stabilized Uniform Spherical Silver Nanoparticles

Shukla¹,

Nandi²,

Palsingh³

2016

Orient. J. Chem

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Controllable synthesis of uniform spherical silver nanoparticles was investigated by carrying out a chemical reduction reaction in a micro emulsion, formed under high shear mixing of aqueous silver nitrate solution and 2-ethyl hexanol as organic phase. Sodium borohydride was used as reducing agent and sorbitan monooleate (span-80) as stabilizer. Further, a study has been performed to observe the effect of silver nitrate concentration, reducing agent concentration, amount of surfactant and organic phase on the size and shape of silver nanoparticles. Transmission electron microscopy (TEM) and dynamic light scattering (DLS) techniques were used for elucidating the shape, size and size distribution of the synthesized silver nanoparticles. Crystal structure of silver nanoparticles thus prepared has been studied by X-ray diffraction analysis (XRD). Uniform silver nanoparticles of average diameter 15-20 nm with high purity and well crystalline nature were obtained under optimized set of conditions. The results of synthesis of these nanoparticles in present study were excellent and may also be used at larger scale.

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“…14 Microemulsions have been extensive applied in various elds, such as separation, 15 chemical reactions, 16 nanomaterial preparation, 17 and drug delivery. 18 Microemulsions application are largely dependent on their different structures, namely, oil-in-water (O/ W), bicontinuous (B.C.…”

Section: Introductionmentioning

confidence: 99%

MesoDyn prediction of a pharmaceutical microemulsion self-assembly consistent with experimental measurements

et al. 2017

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In this work, for the first time a coarse-grained model in a mesoscopic dynamic (MesoDyn) simulation for a pharmaceutical nonionic surfactant Brij97 was presented. By using this coarse-grained model, the morphology transition from oil in water (O/W) to a bicontinuous microemulsion formed in the Brij97/isopropanol/isoamyl acetate/H 2 O quaternary system was predicted. Furthermore, the effect of emulsifier/isoamyl acetate mass ratio, Brij97/alcohol mass ratio and alcohol structure on the droplets size and kinetic formation process of the O/W microemulsion were studied. These MesoDyn predictions were consistent with experimental measurements. This makes it possible to further predict the formation mechanism of complex drug-loaded aggregates of Brij97 by using this coarse-grained model.

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Trends in the synthesis of metal oxide nanoparticles through reverse microemulsions in hydrocarbon media

Cited by 79 publications

References 96 publications

Tuning the porosity and surface characteristics of nanoporous titania using non-ionic surfactant reverse micelles

Tuning the porosity and surface characteristics of nanoporous titania using non-ionic surfactant reverse micelles

Synthesis of Sorbitan Ester Stabilized Uniform Spherical Silver Nanoparticles

MesoDyn prediction of a pharmaceutical microemulsion self-assembly consistent with experimental measurements

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