Synthesis, physical, optical, mechanical, and radiation attenuation properties of TiO2–Na2O–Bi2O3–B2O3 glasses

Abstract

A series of bismo-borate (50-x)B 2 O 3 -xTiO 2 -15Na 2 O-30Bi 2 O 3 glass samples (where x = 0, 2.5, 5, 7.5, and 10 wt %) doped with TiO 2 were fabricated via the melt-quenching technique. The gamma and neutron shielding, physical, optical, and mechanical properties of the prepared samples were investigated. The experimental results were measured using an HPGe detector. 152 Eu, 133 Ba, 137 Cs, and 60 Co radioactive sources were used with energies in the range of 81-1408 keV. The experimental results were compared with both the FLUKA code and the XCOM database. The addition of TiO 2 increased the density of the glass samples and decreased their molar volume. The mass attenuation coefficient (MAC) decreased as photon energy decreased, while it increased as TiO 2 concentration increased. The half value layer (HVL) and mean free path (MFP) of the glass samples increased when the photon energy increased and decreased as the TiO2 concentration increased. The absorbance of the present samples is enhanced by using TiO 2 , meaning they can be used to protect humans from UV light. Both direct and indirect band gaps decreased as TiO 2 content increased from 0 to 10 wt %. Moreover, the electronic transition between localized states is valid in the present samples. The radiation shielding, optical, physical, and mechanical properties of the fabricated glass samples demonstrate their utility for diagnostic gamma shielding.

X-ray radiation shielding and microscopic studies of flexible and moldable bandage by in situ synthesized cerium oxide nanoparticles/MWCNTS nanocomposite for healthcare applications

“…Accordingly, the increase in the use of hybrid material fills the interstitial spaces, thereby leading to more compactness and densification of the bandage formed during the coating process. 29 Therefore, it can be concluded that with an increase in the thickness of the material, there would be an increment in the density and thus leading to more attenuation characteristics in the developed material. Although, there can be a reduction in the flexibility aspects of the developed shielding bandage if more coated material and layers are used.…”

A Closer Look on Nuclear Radiation Shielding Properties of Eu3+ Doped Heavy Metal Oxide Glasses: Impact of Al2O3/PbO Substitution

“…Following the determination of the linear attenuation coefficients (µ), many additional gamma radiation attenuation parameters were determined. To begin, we calculated the mass attenuation coefficients (µ) of the AL glasses using Equation (1) [26],…”

Influence of La-impurities and plasma treatment on the structural and optical properties of some bismuth calcium borate glasses

“…To clarify the validity of the previous conclusions, the density was measured for each sample, and then plotted in Figure (3) for comparison, where the density is very sensitive to any changes that may occur in the internal structural of a solid material. The Vickers micro-hardness values HV were calculated for all studied samples, before and after the plasma treatment, according to the previous standard formula [22][23][24][25]; where F is the indentation load and d is the diagonal length impression, as seen in figure ( 4). It's clear that the incorporation of La-impurities acted to increase the glass hardness (resistance to elastic deformations) as a result to the strength of the atomic bonds in the glass structure induced by dopants [26][27][28][29].…”