Journal ArticleDOI
Sonochemical method for the synthesis of antimony sulfide microcrystallites with controllable morphology
TLDR
In this paper, the x-ray diffraction pattern analysis based on the Rietveld method demonstrates that ultrasound can convert the structure of Sb2S3 from amorphous phase to crystalline phase.Abstract:
Spindlelike, rodlike, starlike, and spherical antimony sulfide (Sb2S3) microcrystallites have successfully been synthesized via a sonochemical method at room temperature. The x-ray diffraction pattern analysis based on the Rietveld method demonstrates that ultrasound can convert the structure of Sb2S3 from amorphous phase to crystalline phase. The crystallinity and morphology of Sb2S3 particles can be modified by using different solvents or solutions. It is found that the spindlelike and starlike particles result from the aggregation of nanoparticles while the rodlike particles arise from epitaxial growth. Due to the quantum confinement effect of charge carriers in small microcrystalline volumes, the characteristic peaks in the optical absorption spectrum of the synthesized 0.001 M Sb2S3 (<100 nm) colloidal solutions are blue-shifted by about 500 nm as compared to the bulk band gaps of Sb2S3.read more
Citations
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Journal ArticleDOI
Using sonochemistry for the fabrication of nanomaterials.
TL;DR: The current review will present the four main advantages that sonochemistry has over other methods related to materials science and nanochemistry, and concentrate on the more recent literature that was not reviewed in the previously-mentioned reviews.
Journal ArticleDOI
Syntheses and characterization of Mg(OH)(2) and MgO nanostructures by ultrasonic method.
Mohammad Alavi,Ali Morsali +1 more
TL;DR: The magnesium hydroxide and magnesium oxide nanostructures were characterized by scanning electron microscopy (SEM), X-ray powder diffraction (XRD), thermal gravimetric (TG) and differential thermal analyses (DTA).
Journal ArticleDOI
Syntheses and characterization of CdCO3 and CdO nanoparticles by using a sonochemical method
Azadeh Askarinejad,Ali Morsali +1 more
TL;DR: In this paper, CdCO 3 and CdO nanoparticles were synthesized by the reaction of Cd(CH 3 COO) 2 and tetramethylammonium hydroxide (TMAH) by a sonochemical method.
Journal ArticleDOI
Syntheses and characterization of Sr(OH)2 and SrCO3 nanostructures by ultrasonic method.
Mohammad Alavi,Ali Morsali +1 more
TL;DR: The Sr(OH)(2) and SrCO(3) nanostructures were synthesized by reaction of strontium(II) acetate and sodium hydroxide or tetramethylammonium hydroxides via ultrasonic method and showed important roles in the size, morphology and growth process of the final products.
Journal ArticleDOI
Syntheses of BaCO3 nanostructures by ultrasonic method.
Mohammad Alavi,Ali Morsali +1 more
TL;DR: Reaction conditions, such as the concentration of the Ba2+ ion, aging time and power of the ultrasonic device played important roles in the size, morphology and growth process of the final products.
References
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Sonochemical synthesis of amorphous iron
TL;DR: In this paper, the synthesis of metallic glass powders using the microscopically extreme (yet macroscopically mild) conditions induced by high-intensity ultrasound was described, and the results showed that metallic glass powder is a highly active catalyst for the Fischer-Tropsch hydrogenation of carbon monoxide and for hydrogenolysis and dehydrogenation of saturated hydrocarbons.
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Nanostructured Molybdenum Carbide: Sonochemical Synthesis and Catalytic Properties
TL;DR: In this paper, a simple sonochemical synthesis of nanostructured molybdenum carbide from the ultrasonic irradiation of hexacarbonyl was presented.
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Growth and microhardness studies of chalcogneides of arsenic, antimony and bismuth
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Sonochemical preparation of amorphous nickel
TL;DR: In this article, a method for the preparation of amorphous Ni powder with particle size of about 10 nm was reported. The sonolysis was performed on neat Ni(CO)4 and on its solution in decane.
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Formation of noble metal particles by ultrasonic irradiation
Kenji Okitsu,Yoshiteru Mizukoshi,Hiroshi Bandow,Yasuaki Maeda,Takao A. Yamamoto,Yoshio Nagata +5 more
TL;DR: In this article, three different reduction pathways under sonication were proposed: reduction by H atoms, reduction by secondary reducing radicals formed by hydrogen abstraction from organic additives with OH radicals and H atoms and reduction by radicals formed from pyrolysis of the additives at the interfacial region between cavitation bubbles and the bulk solution.