Changes in structural and optical properties due to γ-irradiation of MgO nanoparticles
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Maryam Amini
und
Mohammad Hossein Majles Ara
Abstract
In this research, the influence of γ-irradiation on the optical and structural properties of magnesium oxide (MgO) nanoparticles was studied. The MgO nanoparticles were irradiated with doses 100 Gy, 1 kGy, 10 kGy and 20 kGy from 60Co source. The as-synthesized samples of MgO nanoparticles prepared by the sol-gel technique were analyzed by XRD which suggested the double phase; cubic and hexagonal structures of the material. The crystal defects that produced in the cubic and hexagonal lattice were studied before and after 60Co γ-irradiation in a gamma cell by different dose rates in order to report the changes in structural properties of the MgO nanoparticles. The irradiated and un-irradiated samples were characterized by XRD and UV–Vis. The XRD pattern of MgO nanoparticles is showed that the crystal size of MgO nanoparticles being increased with increasing the γ-ray dose rate. For optical absorption, the UV–Visible absorption spectra of MgO nanoparticles are showed that when the dose rate is increased, the value of band gap is decreased. Also, the experimental values of the mass attenuation coefficient of MgO nanoparticles have been calculated before and after γ-irradiation by using the gamma spectroscopy method. Therefore, the results are showed that γ-ray irradiation has various effects on structural, morphological and optical properties.
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©2020 Walter de Gruyter GmbH, Berlin/Boston
Artikel in diesem Heft
- Frontmatter
- Effect of ionic liquid on the extraction of uranium with pillar[5]arene-based phosphine oxide from nitric acid solutions
- Topological analysis of the layered uranyl compounds bearing slabs with UO2:TO4 ratio of 2:3
- Adsorption of uranium from its aqueous solutions using activated cellulose and silica grafted cellulose
- Uranium biosorption by immobilized active yeast cells entrapped in calcium-alginate-PVA- GO-crosslinked gel beads
- Sorption of cesium on Tamusu clay in synthetic groundwater with high ionic strength
- Optimization of 14C LSC measurement using CO2 absorption technique
- Targeting 5α-reductase with 99mTc labeled dutasteride derivatives for prostate imaging
- Changes in structural and optical properties due to γ-irradiation of MgO nanoparticles
- Radiation-induced free radicals from different milk powders and its possible use as radiation dosimeters
Artikel in diesem Heft
- Frontmatter
- Effect of ionic liquid on the extraction of uranium with pillar[5]arene-based phosphine oxide from nitric acid solutions
- Topological analysis of the layered uranyl compounds bearing slabs with UO2:TO4 ratio of 2:3
- Adsorption of uranium from its aqueous solutions using activated cellulose and silica grafted cellulose
- Uranium biosorption by immobilized active yeast cells entrapped in calcium-alginate-PVA- GO-crosslinked gel beads
- Sorption of cesium on Tamusu clay in synthetic groundwater with high ionic strength
- Optimization of 14C LSC measurement using CO2 absorption technique
- Targeting 5α-reductase with 99mTc labeled dutasteride derivatives for prostate imaging
- Changes in structural and optical properties due to γ-irradiation of MgO nanoparticles
- Radiation-induced free radicals from different milk powders and its possible use as radiation dosimeters
