Synthesis and Determination Extinction Coefficient of Gold Nanoparticles with Different Sizes and Different Capping Ligands

Synthesis and Determination Extinction Coefficient of Gold Nanoparticles with Different Sizes and Different Capping Ligands

Extinction coefficients of gold nanoparticles with different sizes were determined by Zetasizer particle analyser and UV ndash;vis absorption spectroscopic measurement. Four different types of gold nanoparticles were prepared and studied: citrate-stabilized nanoparticles in two different sizes; ionic liquid-protected gold nanoparticles and CTAB-protected gold nanoparticles. A linear relationship between the logarithms of extinction coefficients and core diameters of gold particles was found ...

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Simple Synthesis and charactrization of Iron Cobalt (FeCo) Nanorods

Simple Synthesis and charactrization of Iron Cobalt (FeCo) Nanorods

The as-prepared and heat treated iron/cobalt nanoparticles were obtained by iron chloride hexahydrate (FeCl3.6H1O) and cobalt chloride hexahydrate (FeCl3.6H1O) as precursor in the presence of sodium borohydride agent. The samples were characterized by high resolution transmission electron microscopy (HRTEM), field effect scanning electron microscopy (FESEM), X-ray diffraction (XRD) and Fourier transform infrared spectroscopy (FTIR) in different temperature. XRD pattern of FeCo samples showed ...

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HA Zeolite as a Recyclable Catalyst for the Green Synthesis of Aryl naphthoxazinone Derivatives

HA Zeolite as a Recyclable Catalyst for the Green Synthesis of Aryl naphthoxazinone Derivatives

An efficient green procedure for the preparation of aryl naphthoxazinones, applying a three-component one-pot condensation reaction of 2-naphthol, aromatic aldehyde and urea in the presence of HA zeolite under heating conditions in dimethyl sulfoxide has been developed. The present procedure offers several advantages such as short reaction time, simple workup and moderate to high yields, recovery and reusability of the catalyst. ...

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Aircraft conceptual design synthesis

Aircraft conceptual design synthesis

Denis Howe-Aircraft conceptual design synthesis (2005) ...

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CTAB-Assisted of Zinc Ferrite Nanocrystals Prepared by Simple Co-Precipitation Synthesis

CTAB-Assisted of Zinc Ferrite Nanocrystals Prepared by Simple Co-Precipitation Synthesis

Zinc ferrite (Fe2O3/ZnO) nanocomposites were successfully synthesized by simple co-precipitation method via iron (III) nitrate 9-hydrate (Fe(NO3)3.9H2O) and zinc nitrate hexahydrate (Zn(NO3)2.6H2O) as precursor in the presence of cetyltrimethylammonium bromide (CTAB) surfactant. The samples were characterized by high resolution transmission electron microscopy (HRTEM), field effect scanning electron microscopy (FESEM), X-ray diffraction (XRD), X-ray florescence (XRF) and Fourier transform ...

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Synthesis and Characterization of New Schiff Base Ligand and Its Complexation to Cu(II)

Synthesis and Characterization of New Schiff Base Ligand and Its Complexation to Cu(II)

A new bis-Schiff base salophen type Cu(II) complex named as p- bis(3,4-diaminobenzophenimine) phenylenediamine Cu(II) complex, was synthesis via a simple and routine procedure. The desired ligand was prepared through formation of two consecutive imine bond using p-phenylenediamine and 3,4-diaminobenzophenon, followed by reaction with salicylaldehyde and formation of a tetra-dentate ligand. The ligand and its copper complex were characterized step by step with FTIR, 1H NMR, 13C NMR, UV-Vis, CHNS ...

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Synthesis and Characterization of a New poly (-Amino Acid) Derived from Polysalicylaldehyde

Synthesis and Characterization of a New poly (-Amino Acid) Derived from Polysalicylaldehyde

Due to biological and physicochemical properties of poly (-amino acid)s interest in synthesis of their novel derivatives was recently increased. As a new and simple approach, an aromatic poly (-amino acid), poly (AA), was prepared from poly salicylaldehyde (PSA) as a precursor which -amino acid groups formed as pendant groups on the PSA framework. PSA was prepared by a poly condensation reaction, after treatment of salicylaldehyde with chloromethylene group. Transformation of PSA to poly (AA) ...

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Efficient classical synthesis of aminoazines under microwave irradiation

» :: Efficient classical synthesis of aminoazines under microwave irradiation
--- خرید و دانلود محصول

1394/12/12

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Microwave irradiation , Aminoazine؛ aldehyde؛ Microwave irradiation , aminoazine , aldehyde , microwave irradiation

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لینک محصول

http://kavoshgar.zepo.ir/post/43485