Synthesis and characterization of one-dimensional CdSe by a novel reverse micelle assisted hydrothermal method

Xi, Lifei; Lam, Yeng Ming; Xu, Yan; Li, Lain‐Jong

doi:10.1016/j.jcis.2008.01.048

Cited by 63 publications

(35 citation statements)

References 37 publications

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“…The average particle size obtained from TEM images are in good agreement with the estimated crystallite size from the XRD profile results for both CdSe and ZnSe nanoparticles ( Table 2). At 120 kGy, the gamma radiolytic method produced CdSe and ZnSe nanoparticles with larger particle sizes compared to those synthesized by microwave [20] or hydrothermal [21,24] methods. The creation of hydrated electrons by gamma irradiation in the colloidal solution is considered constant for formation of both CdSe and ZnSe nanoparticles, but the particle size of CdSe nanoparticles is greater than that of ZnSe nanoparticles.…”

Section: Elemental Composition Analysis (Edx)mentioning

confidence: 97%

“…The microwave radiation method can produce larger particles in the size range of 10 to 19 nm with a narrow band gap of approximately 1.79 eV [20]. CdSe nanoparticles with sizes of 43 nm and a narrow band gap of 1.75 eV were prepared by the hydrothermal method [21]. However, the narrow size ZnSe nanoparticles of approximately 4 nm with a band gap of 3.3 eV were fabricated using the microwave method [20].…”

Section: Introductionmentioning

confidence: 99%

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Formation of a Colloidal CdSe and ZnSe Quantum Dots via a Gamma Radiolytic Technique

et al. 2016

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Abstract:Colloidal cadmium selenide (CdSe) and zinc selenide (ZnSe) quantum dots with a hexagonal structure were synthesized by irradiating an aqueous solution containing metal precursors, poly (vinyl pyrrolidone), isopropyl alcohol, and organic solvents with 1.25-MeV gamma rays at a dose of 120 kGy. The radiolytic processes occurring in water result in the nucleation of particles, which leads to the growth of the quantum dots. The physical properties of the CdSe and ZnSe nanoparticles were measured by various characterization techniques. X-ray diffraction (XRD) was used to confirm the nanocrystalline structure, energy-dispersive X-ray spectroscopy (EDX) was used to estimate the material composition of the samples, transmission electron microscopy (TEM) was used to determine the morphologies and average particle size distribution, and UV-visible spectroscopy was used to measure the optical absorption spectra, from which the band gap of the CdSe and ZnSe nanoparticles could be deduced.

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Section: Elemental Composition Analysis (Edx)mentioning

confidence: 97%

Section: Introductionmentioning

confidence: 99%

Formation of a Colloidal CdSe and ZnSe Quantum Dots via a Gamma Radiolytic Technique

et al. 2016

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“…For example, CdSe NWs have been fabricated by a solution process [97,98] and high temperature evaporation [99]. CdSe quantum rods were prepared by solution techniques using structuredirecting agents [23], micellar templating techniques [100], and microwave techniques [101].…”

Section: Synthesis Of Anisotropic Cdse Npsmentioning

confidence: 99%

Preparation of Gold Nanoparticles and their Applications in Anisotropic Nanoparticle Synthesis and Bioimaging

et al. 2009

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“…The formation of different mesoporous nanostructures, such as 2D hexagonal phase, cubic phase, and lamellar phase, by using different micellar phases as surfactant template has been reported [8][9][10][11][12][13]. Also, rodlike and reverse rodlike micellar systems have been used to produce nanorods [14][15][16][17][18][19][20][21][22].…”

Section: Introductionmentioning

confidence: 99%

Wormlike Micelles as Templates for Rod-Shaped Nanoparticles: Experiments and Simulations

Gupta

Duttagupta

Chhatre

et al. 2015

Springer Tracts in Mechanical Engineering

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We report here a novel and generic method for the synthesis of rodshaped nanoparticles of AgBr, AgCl, and Fe 2 O 3 using wormlike micelles (WLMs) in aqueous solution. It is observed that the presence of a wormlike micellar phase is critical to the formation of such anisotropic nanoparticles. Spherical nanoparticles are otherwise obtained when wormlike micelles are absent. Nanoparticle precursors first form spherical primary particles at short times, which then coagulate and consolidate on a surfactant backbone to form nanorods. Interestingly, when preformed spherical nanoparticles are added to a wormlike micellar system, nanorods similar to the in situ method are observed. This technique has been explored for the synthesis of anisotropic iron oxide particles as well. Further a mechanism for the formation of these nanorods is proposed and is simulated using a framework of slithering snake dynamics for WLM. In this study, the wormlike micelles are represented by flexible polymers of fixed contour length. A rule-based intermicellar particle exchange protocol is formulated and simulated on a periodic lattice. Simulations reveal that the particles start accumulating slowly on few of the micellar backbones; toward the end, the fraction of micelles carrying no particles increases drastically which is a typical behavior observed in coagulation processes. The particulate masses accumulated on the WLMs are then converted to their respective lengths and diameters.

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Synthesis and characterization of one-dimensional CdSe by a novel reverse micelle assisted hydrothermal method

Cited by 63 publications

References 37 publications

Formation of a Colloidal CdSe and ZnSe Quantum Dots via a Gamma Radiolytic Technique

Formation of a Colloidal CdSe and ZnSe Quantum Dots via a Gamma Radiolytic Technique

Preparation of Gold Nanoparticles and their Applications in Anisotropic Nanoparticle Synthesis and Bioimaging

Wormlike Micelles as Templates for Rod-Shaped Nanoparticles: Experiments and Simulations

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