Showing papers by "Masoud Salavati-Niasari published in 2013"
TL;DR: In this article, the effect of preparation parameters on the morphology of the products was investigated by SEM images and the photocatalytic activity of the as-prepared Ag{sub 2}CrO{sub 4} nanoparticles was tested.
147 citations
TL;DR: In this article, a sonochemical method based on modified Stober process was used to synthesize spherical silica nanoparticles in the presence of organic Schiff base ligand (Salpn-NO2).
134 citations
TL;DR: Results showed that AgO nanoparticles were formed onto AgVO(3) nanorods in the presence of ethanol, cyclohexanol, dimethylsulfoxide (DMSO), and acetone, and by using polyethylene glycol and N,N-dimethylformamide (DMF) as organic additives, the thickness of AgVO (3)nanorods decreased.
126 citations
TL;DR: This work has provided a general, simple, and effective method to control the composition and morphology of NiMoO(4) in aqueous solution, which will be important for inorganic synthesis methodology.
124 citations
TL;DR: In this paper, a simple hydrothermal reaction between magnesium hydroxide (Mg(OH)2) and hydrazine hydrate was used to synthesize a plant-like nanostructures.
Abstract: Flower-like magnesium hydroxide (Mg(OH)2) nanostructures were synthesized via a simple hydrothermal reaction between magnesium nitrate, ethylene diamine and hydrazine hydrate. The Mg(OH)2 were then added to poly vinyl acetate (PVAc) and poly vinyl alcohol (PVA). The effect of Mg(OH)2 nanostructures on the thermal stability of the polymeric matrixes has been investigated. Thermal decomposition of the nanocomposites shift towards higher temperature in the presence of Mg(OH)2 nanostructures. The enhancement of thermal stability of nanocomposites is due to endothermically decomposition of Mg(OH)2 and release of water which dilutes combustible gases. Nanostructure and nanocomposites were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), Fourier transform infrared (FT-IR) spectroscopy, thermogravimetric analysis (TGA), derivative thermogravimetric analysis (DTG), differential thermal analysis (DTA) and atomic force microscopy (AFM).
119 citations
TL;DR: The effect of tetraamine ligands on the particle size, agglomeration level, optical and photovoltaic properties of TiO2 nanoparticle prepared via a two-step sol-gel method was investigated in this paper.
106 citations
TL;DR: In this paper, a thin film of CuInS2 microspheres was prepared and its application in solar cells was investigated and the optical band gap was estimated to be 2.28 eV.
69 citations
TL;DR: In this paper, the effect of a Schiff-base ligand (N,N′-ethylenebis(acetylacetone iminato)dianion = acacen) on size and optical properties of TiO 2 nanoparticles in a two-step sol-gel method was investigated.
58 citations
TL;DR: In this article, CoMoO4 nanorods have been successfully synthesized by precipitation method using Co(C7H5O2)2⋅4H2O and (NH4)6Mo7O24⋆4H 2O as starting materials.
55 citations
TL;DR: Zinc molybdate rod-like nanostructures have been successfully synthesized by precipitation method process and using a solid organometallic molecular precursor [bis(salicylaldehydato)zinc(II)], Zn(sal) 2, and (NH 4 ) 6 Mo 7 O 24 ·4H 2 O as starting materials as discussed by the authors.
54 citations
TL;DR: Silica nanoparticles synthesized from rice husk ash at room temperature by using high energy planetary ball mill exhibited a delayed release effect and were employed as drug carrier to investigate in vitro release behavior of Penicillin-G in simulated body fluid.
Abstract: Silica nanoparticles were synthesized from rice husk ash at room temperature by using high energy planetary ball mill. The milling time and mill rotational speed were varied in four levels. The morphology of the synthesized powders was investigated by the FE-SEM and TEM image as well as XRD patterns. The results have revealed that the nano-sized amorphous silica particles are formed after about 6 h ball milling and they are spherical in shape. The average particle size of the silica powders is found to be around 70 nm which decreases with increasing ball milling time or mill rotational speed. The as-synthesized silica nanoparticles were subsequently employed as drug carrier to investigate in vitro release behavior of Penicillin-G in simulated body fluid. UV-Vis spectroscopy was used to determine the amount of Penicillin-G released from the carrier. Penicillin-G release profile from silica nanoparticles exhibited a delayed release effect.
TL;DR: In this paper, a simple sonochemical reaction at room temperature was used to synthesize metal hydroxide and metal carbonate nanoparticles with excellent performance in photocatalytic applications.
Abstract: In this work Mg(OH)2, Ca(OH)2, CaCO3, SrCO3 and BaCO3 nanoparticles were synthesized via a simple sonochemical reaction at room temperature. Nanoparticles were synthesized via a surfactant-free reaction solvent water. Nanostructures materials were characterized by scanning electron microscopy, X-ray diffraction and fourier transform infrared spectroscopy. The photocatalytic behavior of nanoparticles was evaluated using the degradation of a methyl orange aqueous solution under ultraviolet light irradiation. The results show that metal hydroxide and metal carbonate nanoparticles are promising materials with excellent performance in photocatalytic applications.
TL;DR: In this article, NiSe micro/nanocrystals with multiform morphologies, including particles, rods and flowers were prepared by hydrothermal method from different Ni salts: NiBr2, NiClO4 2⋅6H2O, NiNiCl2⋆6H 2O and NiSO4⋀6 H2O.
TL;DR: In this article, the effect of preparation parameters such as microwave power, irradiation time, and type of copper precursor on the particle size of the products was studied, and the as-deposited CdS/CuInS 2 films were used for the photovoltaic measurements.
TL;DR: In this article, different morphologies of ZnO nanostructures including nanoparticles have been produced by solid-state thermal decomposition of bis(acetylacetonato)zinc(II) nano-structures obtained by the sublimation of bis (acetylacetyl acetonato)-zinc (II) powder.
TL;DR: In this article, the authors synthesized N,N′-(bis(salicylidene)-ethylene-1,2-diamine)Nickel(II); as precursor which has been synthesized via two methods: [Ni(salen)] were obtained by solid state reaction in absence solvent and co-precipitation reaction in presence of propanol as solvent, respectively.
Abstract: Nickel oxide nanoparticles have been synthesized by thermal treatment of N,N′-(bis(salicylidene)-ethylene-1,2-diamine)Nickel(II); [Ni(salen)]; as precursor which has been synthesized via two methods: [Ni(salen)] were obtained by solid state reaction in absence solvent and co-precipitation reaction in presence of propanol as solvent, respectively. Nickel oxide nanoparticles were characterized by X-ray diffraction, scanning electron microscopy, transmission electron microscopy and Fourier transform infrared spectroscopy.
TL;DR: In this paper, the effect of plant-like magnesium hydroxide (Mg(OH)2) nanostructures on the thermal stability of polymeric matrixes has been investigated.
Abstract: Flower-like magnesium hydroxide (Mg(OH)2) nanostructures were synthesized via a simple hydrothermal reaction at relatively low temperature. The Mg(OH)2 nanostructures were then added to acrylonitrile–butadiene–styrene (ABS) and cellulose acetate (CA) polymers. The effect of Mg(OH)2 nanostructures on the thermal stability of the polymeric matrixes has been investigated. The thermal decomposition of the nanocomposites shifts towards higher temperature in the presence of the Mg(OH)2. The enhancement of thermal stability of nanocomposites is due to endothermically decomposition of magnesium hydroxide that releases of water and dilutes combustible gases. Nanostructures and nanocomposites were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), atomic force microscopy (AFM), Fourier transform infrared (FT-IR) spectroscopy, thermogravimetric analysis (TGA), differential thermal analysis (DTA), UL-94 test and limiting oxygen index (LOI) analysis.
TL;DR: In this paper, pomegranate juice was used not only as reductant, but also as capping agent for self-assembly of trigonal nanostructures to form flower-like CuI microstructures.
TL;DR: In this article, two methods of thermal decomposition and hydrothermal routes were applied for synthesis of nickel sulfides of new precursor [Ni(TSC) 2 ]Cl 2 (TSC=thiosemicarbazide) and compared two methods with each other.
TL;DR: In this paper, a general, simple, and effective method to control the composition, phase structure and morphology of metal selenides in aqueous solution was provided, which will be important for inorganic synthesis methodology and further applications of selenide.
TL;DR: In this paper, the effects of sulfur sources, solvents, heating time and microwave power on morphology of product were investigated, and the as-synthesized CuInS2 nanoparticles were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscope (TEM), ultraviolet-visible (UV-vis) spectroscopy, and room temperature photoluminescence (PL) analysis.
TL;DR: In this paper, a surfactant-free microwave method was used to prepare Cu 2 S nanostructures, without formation of other phases such as CuS and Cu 1.8 S, were prepared by using Na 2 SO 3 as a weak reducing agent.
TL;DR: In this paper, a coprecipitation method was used to synthesize CdMoO4 nanocrystals using Cd(Sal)2 (Sal −=−salicylidene) and (NH4)6Mo7O24·4H2O as starting materials in water as solvent.
TL;DR: In this article, copper sulfide nanoparticles have been synthesized from copper salicylate and thioglycolic acid by a hydrothermal method, and the obtained product was analyzed by X-ray diffraction, scanning electron microscopy, Fourier transform infrared spectroscopy, energy-dispersive x-ray spectrograms, and photoluminescence spectrography.
Abstract: Copper sulfide nanoparticles have been synthesized from copper salicylate and thioglycolic acid by a hydrothermal method. The obtained product was analyzed by X-ray diffraction, scanning electron microscopy, Fourier transform infrared spectroscopy, energy-dispersive X-ray spectroscopy and photoluminescence spectroscopy. The effect of reaction time, temperature, solvent and sulfur sources was investigated.
TL;DR: In this article, the effect of amines on the size of the TiO2 nanocrystals and its influence on the performance of corresponding dye-sensitized solar cell (DSSC) were investigated.
TL;DR: In this paper, a facile hydrothermal route using PEG4000 as additive agent was used to synthesize PbSe rod-shape nanostructures, and the as-obtained products were characterized by X-ray powder diffraction (XRD), scanning electron microscopy (SEM), TEM and energy-dispersive Xray spectroscopy (EDX).
TL;DR: In this paper, HgS nanodendrites and ZnS nanospheres were synthesized via hydrothermal decomposition of [M(TSC)2]Cl2 complex (M=Hg, Zn and TSC=thiosemicarbazide), without any surfactant.
TL;DR: In this paper, the effect of different parameters such as precursor, power of pulsation, surfactant, and reaction time on the morphology of the products was investigated, and it was found that the as-obtained CeO2 nanoparticles exhibit a strong photoluminescence (PL) peak at 381 nm at room temperature that can be ascribed to the high level transition in the CeO 2 semiconductor.
Abstract: Uniform CeO2 nanoparticles were synthesized via a facile sonochemical reaction between ceric ammonium nitrate and ammonia. Nanoparticles were synthesized via a surfactant free reaction at room temperature in solvent of water. Products were characterized using X-ray diffraction, scanning electron microscopy, photoluminescence (PL) spectroscopy, and energy dispersive X-ray analysis. The effect of different parameters such as precursor, power of pulsation, surfactant and reaction time on the morphology of the products was investigated. It was found that the as-obtained CeO2 nanoparticles exhibit a strong PL peak at 381 nm at room temperature that can be ascribed to the high level transition in the CeO2 semiconductor. The photocatalytic behavior of CeO2 nanoparticles was evaluated using the degradation of a methyl orange aqueous solution under ultraviolet light irradiation. The results show that CeO2 nanoparticles are promising materials with excellent performance in photocatalytic applications.
TL;DR: In this paper, the optical properties of 3D indium sulfide (In2S3) nanostructures with cubic structure were investigated. And the effects of reaction parameters, such as temperature, precursor concentration and reaction time on the morphology, and particle size of products were investigated, and the experimental results showed that temperature and time reaction played key roles in the final morphology of In2S 3 structures.
TL;DR: In this paper, a modified Stober procedure via a sonochemical method and the reaction between tetraethyl orthosilicate (TEOS), ethylenediamine (en) and methanol in water, in the attendance of Schiff-base ligand (H2Salen) as capping agent.
Abstract: Silica nanostructures were synthesized on the basis of modified Stober procedure via a sonochemical method and the reaction between tetraethyl orthosilicate (TEOS), ethylenediamine (en) and methanol in water, in the attendance of Schiff-base ligand (H2Salen) as capping agent. The effects of synthesis parameters such as: sonochemical irradiation time, sonochemical power and molar aspect ratio of Schiff-base ligand to TEOS were considered to achieve optimum situation. It was established that particle size, morphology and phase of the products could be affected by these parameters. The as synthesized silica nanostructures were characterized by X-ray powder diffraction, scanning electron microscopy, Fourier transform infrared spectroscopy, ultraviolet–visible spectroscopy, and X-ray energy dispersive spectroscopy.