Mehdi Bazarganipour

Isfahan University of Technology, Isfahan, Ostān-e Eşfahān, Iran

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Publications (26)41.51 Total impact

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    ABSTRACT: The synthesis and characterization of Co3O4 nanoparticles via solid state thermal decomposition of a binuclear cobalt(III) complex, as a new precursor is reported. Solid state thermal decomposition of the complex at 450 ◦C for 3h produces Co3O4 nanoparticles which are characterized by FT-IR spectroscopy, X-ray diffraction (XRD), scanning electron microscopy (SEM), and transmission electron microscopy (TEM). SEM and TEM images exhibit the quasi-spherical of the Co3O4 nanoparticles of between 20 and 30 nm. Moreover, adsorption of methylene orange dye on Co3O4 nanoparticles was investigated and the uptake% was determinated to be >45% in 200 min.
    RSC Advances 09/2014; · 3.71 Impact Factor
  • Advanced Powder Technology 01/2014; · 1.65 Impact Factor
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    ABSTRACT: Silica nanostructures were synthesized on the basis of modified Stöber 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.
    Journal of Cluster Science 12/2013; · 1.11 Impact Factor
  • Zahra Shahri, Mehdi Bazarganipour, Masoud Salavati-Niasari
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    ABSTRACT: 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 (NH4)6Mo7O24·4H2O as starting materials. Some parameters including time effect, temperature effect, and surfactant effect were investigated to reach the optimum conditions. The as synthesized nanostructures were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmittance electron microscopy (TEM) and Fourier transform infrared (FT-IR) spectra. Facile preparation and separation are important features of this route. This work has provided a general, simple, and effective method to control the composition and morphology of zinc molybdate in aqueous solution, which will be important for inorganic synthesis methodology.
    Superlattices and Microstructures 11/2013; · 1.56 Impact Factor
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    ABSTRACT: A modified Stöber process for synthesis of spherical silica nanoparticles.Choosing Schiff base ligand as novel additive for synthesis spherical SiO2.Spherical silica nanoparticles were synthesized by sonochemical method.Investigation of ultrasonic power, irradiation time on morphology of products.
    Superlattices and Microstructures 09/2013; · 1.56 Impact Factor
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    ABSTRACT: PbSe rod-shape nanostructures have been successfully synthesized by a facile hydrothermal route using PEG4000 as additive agent. The as-obtained products were characterized by X-ray powder diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM) and energy-dispersive X-ray spectroscopy (EDX). The effect of experimental parameters on the formation of different morphologies and possible mechanism were investigated. Effects of temperature, reaction time and reductant agent on the morphology, the particle sizes and the phase of the final products have been investigated. It was found that the phase and morphology of the products could be greatly influenced by these parameters. The synthesis procedure is simple and uses less toxic reagents than the previously reported methods. The studies on the optical properties of PbSe nanostructures were carried out by UV–vis absorption spectrum and photoluminescence spectrum.
    Superlattices and Microstructures 06/2013; 58:20–30. · 1.56 Impact Factor
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    ABSTRACT: HgSe nanorods have been synthesized through a simple hydrothermal reduction approach. The nanorods formed were ≈45 nm average diameter and ≈3 μm nm in length. X-ray diffraction characterization suggested that the product consists of cubic phase pure HgSe. The as-prepared products were also characterized by scanning electron microscopy (SEM) and transmission electron microscopy (TEM). An X-ray energy dispersive spectroscopy (EDX) study further confirmed the composition and purity of the product. The synthesis procedure is simple and uses less toxic reagents than the previously reported methods. The results showed that the capping agent CTAB (cetyltrimethylammoniumbromide) plays a crucial role in the process. Other factors, such as the reaction time, temperature, different capping agent and the reductant type also have an influence on the morphology of the final products to some extent.
    Polyhedron 04/2011; 30(6):1103–1107. · 2.05 Impact Factor
  • Masoud Salavati-Niasari, Mehdi Bazarganipour, Fatemeh Davar
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    ABSTRACT: Bi2Se3 nanorods have been synthesized through a simple hydrothermal reduction approach. The nanorods formed were ≈50nm in average diameter and ≈4μmnm in length. XRD characterization suggested that the product consisted of the rhombohedral phase of pure Bi2Se3. The products were also characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM), and thermo gravimetric analysis. The synthesis procedure is simple and uses less toxic reagents than the previously reported methods. The results showed that the capping agent CTAB plays a crucial role in the process. Other factors, such as the reaction time, the different capping agent and the sort of reductant also have influence on the morphology of the final products to some extent.
    Inorganica Chimica Acta - INORG CHIM ACTA. 01/2011; 365(1):61-64.
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    ABSTRACT: Cobalt [(OH)2-salophen] (N,N′-bis(4-hydroxysalicylidene)phenylene-1,2-diamine) complex was covalently grafted on the chemical modification of multi-wall carbon nanotubes (MWNTs); [Co((OH)2-salophen)]@MWNTs]. The as-products were characterized by spectroscopy (FT-IR, Raman, and UV–Vis), TGA, and TEM. The cobalt(II) Schiff-base complex covalently anchored on modified MWNTs was characterized by different techniques. The catalytic activity of the novel nanotubes based materials was tested in the epoxidation of cyclohexene in the iso-butyraldehyde/air system using acetonitrile as solvent and very high conversion was obtained. The experimental results indicated very good catalytic activity and selectivity in the epoxidation of cyclohexene. Repeated runs of the catalysts were carried out three times and the results indicated that the catalyst was stable for the epoxidation of cyclohexene.
    Inorganica Chimica Acta - INORG CHIM ACTA. 01/2011; 375(1):11-19.
  • Masoud Salavati-Niasari, Fatemeh Davar, Mehdi Bazarganipour
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    ABSTRACT: In the present study, hydroxyl functionalized manganese(III) Schiff-base; [Mn((OH)(2)-salophen)Cl] [(OH)(2)-salophen] = (N,N'-bis(4-hydroxysalicylidene)phenylene-1,2-diamine); has been covalently anchored on modified multi-wall carbon nanotubes (MWNTs); [Mn((OH)(2)-salophen)Cl]@MWNTs]. The new modified MWNTs have been characterized by transmission electron microscopy (TEM), X-ray diffraction (XRD), X-ray photoelectron (XPS), thermal analysis, FT-IR spectroscopy and elemental analysis. The results suggest that the symmetrical Schiff-base is a bivalent anion with tetradentate N(2)O(2) donors derived from the phenolic oxygen and azomethine nitrogen. 4-Hydroxy salophen; [(OH)(2)-salophen], complex of manganese, grafted on the walls of MWNTs have been investigated as catalysts for the aerobic oxidation of para-xylene in the absence of added halogen promoters and using tert-butylhydroperoxide (TBHP) as the initiator at low temperatures. The major products include toluic acid, toluyl aldehyde and toluyl alcohol. The MWNTs-grafted complex did not undergo any colour change during the reaction and could be easily separated and reused many times. In contrast, the neat complex, while they were active in the first cycle, was completely destroyed during the run and changed colour. They, however, gave lower conversions compared to the grafted catalyst.
    Dalton Transactions 08/2010; 39(31):7330-7. · 3.81 Impact Factor
  • Masoud Salavati-Niasari, Mehdi Bazarganipour, Fatemeh Davar
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    ABSTRACT: ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
    ChemInform 01/2010; 41(30).
  • Masoud Salavati-Niasari, Mehdi Bazarganipour, Fatemeh Davar
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    ABSTRACT: Nano-sized Cu6Sn5 alloy powders were prepared by a co-precipitation reductive route using a hydrothermal method at 80°C. The nano-size and morphology of the synthesized Cu6Sn5 alloy powders were evaluated by X-ray diffraction (XRD), scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The obtained morphologies, chemical compositions are comparatively discussed. A variety of synthesis parameters, such as time, capping agent and sort of reductant, has an effect on the morphology of the obtained materials, and will be particularly highlighted.
    Polyhedron 01/2010; 29(7):1796-1800. · 2.05 Impact Factor
  • Masoud Salavati-Niasari, Mehdi Bazarganipour, Fatemeh Davar
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    ABSTRACT: HgTe rod-shape composed of crystalline particles has been prepared by a hydrothermal method, and characterized by means of X-ray powder diffraction (XRD), scanning electron microscopy (SEM), and transition electron microscopy (TEM). The effects of capping agents, reductants, reaction temperatures, and reaction times on crystal structures and shapes of HgTe have been investigated. The results showed that the CTAB as capping agent plays a crucial role in the hydrothermal process. The synthesis procedure is simple and uses less toxic reagents than the previously reported methods.
    Journal of Alloys and Compounds 01/2010; 499(1):121-125. · 2.73 Impact Factor
  • Masoud Salavati-Niasari, Mehdi Bazarganipour, Fatemeh Davar
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    ABSTRACT: In this paper, based-alloy Bi2Te3 nanostructure with different morphologies was synthesized by a hydrothermal process based on the reaction between Bi(NO3)3, TeCl4, and KBH4 in water at various conditions. The products were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), Fourier transform infrared spectrometry (FT-IR), X-ray photoelectron spectrum and inductively coupled plasma-atomic emission spectrometer and transmission electron microscopy (TEM). The result shows that the Bi2Te3 crystals have diameters ranging from 20 to 25 nm with high purity. Other factors, such as the reaction time, the different capping agent and the sort of reductant also have influence on the morphology of the final products to some extent. By variation of reductant, conversion rode-like to flower-like was obtained. Organic ligands play a manifold role in the formation of the chainlike nanostructures as both coordinate ligand and architecture template, and a possible formation mechanism is proposed.
    Journal of Alloys and Compounds 01/2010; 489(2):530-534. · 2.73 Impact Factor
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    ABSTRACT: Nanosized tin telluride compounds were prepared by chemical reduction process and hydrothermal methods. The nanosized SnTe compounds were characterized by means of X-ray diffraction (XRD), scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The SnTe nanoalloy prepared by chemical reduction process presented quasi-spherical morphology with aggregation. The sizes of particle were 40–50 nm. The powder prepared by hydrothermal process was nearly nanospheres, and the particle sizes were 30–40 nm with narrow distribution. The effect of capping agent, reductant sort, and reaction temperature on the morphology, the particle sizes and the phase of SnTe alloys have been investigated. Experimental results indicated that N2H4·H2O plays a crucial role in the formation of nanosized rode-like SnTe compounds.
    Applied Surface Science 01/2010; 257(3):781-785. · 2.54 Impact Factor
  • Masoud Salavati-Niasari, Mehdi Bazarganipour
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    ABSTRACT: A hydroxyl functionalized cobalt(II) Schiff base complex has been covalently anchored to modified multi wall carbon nanotubes (MWNTs). The modified MWNTs have been characterized by physico-chemical and spectroscopic methods. The results suggest that the symmetrical Schiff base, N,N′-bis(4-hydroxysalicylidene)-ethylene-1,2-diamine; H2[((OH)2-salen)] acts as a tetradentate N2O2 donor via the deprotonated phenolic oxygens and azomethine nitrogens. The functionalized [Co((OH)2-salen)]–MWNTs catalyze the oxidation of aliphatic and aromatic alcohols into the corresponding carboxylic acids and ketones in the presence of 30% H2O2 in good yields. The system is truly heterogeneous (no leaching observed) and reusable (no decrease in activity over three consecutive runs).
    Transition Metal Chemistry 01/2009; 34(6):605-612. · 1.40 Impact Factor
  • Masoud Salavati-Niasari, Mehdi Bazarganipour
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    ABSTRACT: Hydroxyl functionalized copper(II) Schiff-base, N,N′-bis(4-hydroxysalicylidene)-ethylene-1,2-diaminecopper(II), [Cu((OH)2-salen)], has been covalently anchored on modified MWCNTs. The new modified MWCNTs ([Cu((OH)2-salen)]-MWCNTs) have been characterized by TEM, thermal analysis, XRD, XPS, UV–vis, DRS, FT-IR spectroscopy and elemental analysis. The modified copper(II) MWCNTs solid was used to affect the catalytic oxidation of ethylbenzene with tert-butylhydroperoxide as the oxidant at 333 K. The system is truly heterogeneous (no leaching observed) and reusable (no decrease in activity) in three consecutive runs. Acetophenone was the major product though small amounts of o- and p-hydroxyacetophenones were also formed revealing that C–H bond activation takes place both at benzylic and aromatic ring carbon atoms. Ring hydroxylation was more over the “neat” complexes than over the encapsulated complexes.
    Applied Surface Science 01/2009; 255(17):7610-7617. · 2.54 Impact Factor
  • Masoud Salavati-Niasari, Mehdi Bazarganipour
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    ABSTRACT: The chemical modification of multi-wall carbon nanotubes (MWNTs) is an emerging area in material science. In the present study, hydroxyl functionalized nickel(II) Schiff-base has been covalently anchored on modified MWNTs. The new modified MWNTs have been characterized by transmission electron microscopy (TEM), X-ray diffraction (XRD), X-ray photoelectron (XPS), thermal analysis, UV–vis, diffuse reflectance (DRS), FT-IR spectroscopy and elemental analysis. The results suggest that the symmetrical Schiff-base; N,N′-bis(4-hydroxysalicylidene)-ethylene-1,2-diamine; H2[(OH)2-salen]; is a bivalent anion with tetradentate N2O2 donors derived from the phenolic oxygen and azomethine nitrogen. The formula was found to be [Ni((OH)2-salen)] for the 1:1 non-electrolytic complex. Multi-wall carbon nanotubes covalently anchored nickel(II) complex ([Ni((OH)2-salen)]@MWNTs) catalyze the oxidation of phenol with H2O2. Oxidation of phenol catalyzed by this complex gave catechol and hydroquinone as major products. A suitable reaction condition has been optimized for [Ni((OH)2-salen)]@MWNTs by considering the effect of various parameters such as reaction time and amount of oxidant, different solvents, concentration of substrate, etc. for the maximum transformation of phenol.
    Applied Surface Science 12/2008; · 2.54 Impact Factor
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    ABSTRACT: The chemical modification of multi-wall carbon nanotubes (MWNTs) is an emerging area in material science. In the present study, an hydroxyl functionalized manganese(II) Schiff-base has been covalently anchored on modified MWNTs. The new modified MWNTs have been characterized by transmission electron microscopy (TEM), X-ray diffraction (XRD), X-ray photoelectron (XPS), thermal analysis, UV–Vis, diffuse reflectance (DRS), FT-IR spectroscopy and elemental analysis. The results suggest that the symmetrical Schiff-base; N,N-bis(4-hydroxysalicylidene)-ethylene-1,2-diamine; H2[(OH)2-salen]; is a bivalent anion with tetradentate N2O2 donors derived from the phenolic oxygens and azomethine nitrogens. The formulae was found to be [Mn((OH)2-salen)] for the 1:1 non-electrolytic complex. The multi-wall carbon nanotubes covalently anchored manganese(II) complex ([Mn((OH)2-salen)]@MWNTs) catalyze the oxidation of cyclohexene with TBHP. Oxidation of cyclohexene catalyzed by this complex gave 2-cyclohexene-1-ol, 2-cyclohexene-1-one and 1-(tert-butylperoxy)-2-cyclohexene as the major products. The manganese(II) complex covalently anchored on MWNTs shows significantly higher catalytic activity than [Mn((OH)2-salen)]. The activity of the immobilized catalyst remains nearly the same after three cycles, suggesting the true heterogeneous nature of the catalyst. This catalyst is more selective towards 2-cyclohexene-1-one.
    Polyhedron 01/2008; 27(18):3653-3661. · 2.05 Impact Factor
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    ABSTRACT: A new series of bis(macrocyclic)dinickel(II) complexes containing phenylene bridges between 13-membered triaza dioxa macrocyclic subunits have been synthesized via in-situ One Pot Template Condensation (IOPTC) of nitrogen–nitrogen linker, CH2O and 1,8-diamino-3,6-dioxaoctane and nickel(II) in a 1:4:2:2 molar ratio. These complexes have been found to be effective catalysts for the selective oxidation of cyclohexene to 2-cyclohexene-1-one and 2-cyclohexene-2-ol with molecular oxygen as the oxidant.
    Transition Metal Chemistry 01/2007; 32(1):9-15. · 1.40 Impact Factor