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New binary and ternary SiO2 composites with Fe2O3 and Co2.74O4 and the evaluation of their γ-radiation shielding properties
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New binary and ternary SiO2 composites with Fe2O3 and Co2.74O4 and the evaluation of their γ-radiation shielding properties
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Journal Article
New binary and ternary SiO2 composites with Fe2O3 and Co2.74O4 and the evaluation of their γ-radiation shielding properties
2025
Overview
A new series of binary and ternary nanocomposites contains cobalt oxide or iron/cobalt oxides were manufactured to increase silicon dioxide
shielding power. XRD indicated the presence of Co as Co
2.74
O
4
(COD: 1528446) and the presence of iron as Fe
3
O
4
(COD: 9002318 and 9005814). Using Profex, the Rietveld refinements were carried out. The R
w
, R
ex
, x
2
, and G
of
were 4.49, 4.34, 1.07, and 1.03, respectively, indicating good refinement parameters. XPS indicated the presence of Si (
), Fe (Fe
O
) and cobalt (
and
). TEM analysis showed that all metal oxide@SBA-15 solids have characteristic and well-organized SBA-15 structures. The
-radiation shielding for the prepared samples were investigated via the Monte-Carlo code (MCN) and Phy-X software. The results confirmed that, adding high concentrations of cobalt-oxide and hematite increases the linear attenuation significantly. The SiCoFe-3 sample, which contains the highest content of cobalt-oxide and hematite, has the best
-radiation shielding capability among all the synthesized SiCo/SiCoFe samples.
Publisher
Nature Publishing Group UK,Nature Publishing Group,Nature Portfolio
Subject
