نتایج جستجو برای: sol gel auto combustion method

تعداد نتایج: 1769607  

حمل‌زاده احمدی, فاطمه, زرگرشوشتری, مرتضی, موسوی قهفرخی, سید ابراهیم,

In this paper, Y-type strontium hxaferrite (Sr2Co2Fe12O22) nanostructure with molar ratio of citric acid to metal nitrats of 1:0.5, 1:1, 1:1.5 and 1:2 prepared using a sol-gel of auto-combustion method and then prepared powders were sintering at 1000  ˚C for 3 h. In order to investigate structural, magnetic and dielectric properties of the Sr2Co2Fe12O22 nanostructure, samples have been analyzed...

Mn0.8Zn0.2Fe2-xDyxO4 (where x= 0, 0.025, 0.05, 0.075, 0.1) ferrite nanoparticles were synthesized by auto- combustion sol-gel method for the first time in this study. The effect of Dy-doping on the structural and magnetic properties of the produced specimens was examined using the X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), vibrating sample magnetometery (VSM), and ...

2017
Samira Mandizadeh Faezeh Soofivand Samira Bagheri Masoud Salavati-Niasari

In this work, SrCrxFe12-xO19 (x = 0.0, 0.5, 1.0, 1.5) nanostructures were successfully synthesized by sol-gel auto-combustion method, and different aminoacids were used as green reductants. Various analysis results show that SrCrxFe12-xO19 nanoparticles synthesized successfully.The present study shows that SrCrxFe12-xO19 nanoparticle could be used as adsorbent for the desulfurization of liquid ...

نظری, سمیه, حسن پور, احمد , نیایی فر, محمد ,

In this research, magnesium-zinc ferrite nanoparticles (Mg1-xZnxFe2O4) (x = 0, 0.2, 0.4, 0.5, 0.6, 0.8, 1) have been synthesized using sol-gel auto-combustion method. The X-ray diffraction analysis (XRD) revealed that the samples crystallized in a single-phase cubic spinel structure. Crystallites size of samples varies from 13nm to 29nm, also the lattice parameters and bonds length tetrahedral ...

2016
Ahmed I. El-Batal Ayman A. Farrag Mohamed A. Elsayed Ahmed M. El-Khawaga

In this study, Aspergillus niger ADM110 fungi was gamma irradiated to produce lipase enzyme and then immobilized onto magnetic barium ferrite nanoparticles (BFN) for biodiesel production. BFN were prepared by the citrate sol-gel auto-combustion method and characterized by transmission electron microscopy (TEM), X-ray diffraction (XRD), Fourier transform infrared (FTIR) and scanning electron mic...

Journal: :journal of physical & theoretical chemistry 2013
s. ghasemlou h. aghaie m. monajjemi

hydroxyapatite nanocrystals were synthesized by sol-gel combustion method for the sorption ofhg(ii) ions from aqueous solutions. the effects of varying parameters such as ph, temperature, initialmetal concentration, and contact time on the adsorption process were examined. adsorptionequilibrium was established in 360 minutes and the maximum adsorption of hg(ii) on thehydroxyapatite was observed...

2017
Bogdan K. Ostafiychuk Larysa S. Kaykan Julia S. Kaykan Bogdan Ya. Deputat Olena V. Shevchuk

Nanocrystalline lithium ferrite Li 0.5 Fe 1.7 Mg 0.8 O 4 powders were synthesized by the sol-gel auto-combustion method from the corresponding metal nitrates using citric acid as fuel.The results from XRD, SEM, and AC electrical conductivity studies are summarized as follows: The results of XRD analysis showed that all the samples were formed in single-phase cubic spinel structure at different ...

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