Attenuation properties and radiation protection efficiency of Tb2O3-La2O3-P2O5 glass system

Alalawi, Amani; Eke, Canel; Alzahrani, Nujud jamaan; Alomairy, Sultan; Alsalmi, Omar; Sriwunkum, Chahkrit; Alrowaili, Z.A.; Al-Buriahi, M.S.

doi:10.1007/s41779-022-00707-4

Cited by 22 publications

(2 citation statements)

References 47 publications

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“…In addition, two other very important parameters, the radiation protection efficiency (RPE) and the transmission factor (TF), were calculated to determine the effectiveness of shielding material. The equations for all the parameters used in the calculation are given in equation 3-8 [9,[22][23][24][25][26][27][28].…”

Section: Theoretical Calculationsmentioning

confidence: 99%

Evaluation of Optical and Radiation Protection Parameters of High Refractive Index Polymers

KIRBIYIK,

BİLİCİ

2023

Journal of Physical Chemistry and Functional Materials

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The optical properties of the prescription and non-prescription (plano) samples of the MR-8 high index lens were examined by UV/VIS spectrometry. The results showed that the light transmittance of the two MR-8 lens samples examined was over 90%, and the transmittance at the wavelength (~550nm) to which the human eye is most sensitive was 83.437% and 84.602% for the prescription and non-prescription samples, respectively. In terms of quality of vision, it is expected that the visible light transmittance will be high and the ultraviolet light transmittance will be minimal. It is very important that both the prescription and non-prescription organic MR-8 lenses tested have no transmittance below approximately 398nm. This means that this lens material protects against UVA and UVB rays, even though it is uncoated. It is also important to reduce the dose to the lens, which is a radiosensitive tissue. In the study, the mass absorption coefficients of MR-8 and Ormix lens materials in the 0.15-2.00 MeV energy range were calculated using the web-based XCOM programme. LAC, HVL, TVL, MFP, RPE and TF values were calculated from the MAC values obtained. At energies below 0.05 MeV, the maximum MAC value was 0.974 and 4.416 for the MR-8 and Ormix lenses, respectively. The RPE and TF values were 0.807-16.235%, 0.996-0.992% for the MR-8 lens and 0.862-55.233%, 0.448-0.991% for the Ormix lens. The results showed that the photon absorption ability of the Ormix lens is relatively better in the region where the photoelectric interaction is dominant. This research is also important in terms of determining the optical and nuclear radiation parameters of the material used in the manufacture of high index lenses and investigating its effectiveness in reducing the dose to the eyepiece.

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Section: Theoretical Calculationsmentioning

confidence: 99%

Evaluation of Optical and Radiation Protection Parameters of High Refractive Index Polymers

KIRBIYIK,

BİLİCİ

2023

Journal of Physical Chemistry and Functional Materials

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“…Further, La(III) can also form heterogeneous metal complexes with other metals (e.g., Al, Fe, Ag, etc.) through gas thermal reactions, enhancing the electrochemical properties of the complexes for catalytic electrolysis applications. − The heterogeneous metal complexes provide us with new thoughts on how the La (III) adhesion to the BPCM after gas thermal hybridization is higher than other methods. When doped with La (III), it adsorbs to the C atom adjacent to N, which is more convenient for the in situ hybridization reaction to occur.…”

Section: Introductionmentioning

confidence: 99%

Construction of Lanthanide Magnetic Bio-Based Porous Carbon Materials with Beam and Column Structure and Its Synergistic Adsorption Performance

Zhang,

Guo,

Jia

et al. 2023

ACS Appl. Mater. Interfaces

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Biochar porous carbon material (BPCM) has extraordinary adsorption properties and is being widely used in different fields around the world. The pore structure of BPCM is liable to collapse, and mechanical properties are inferior; hence, the focus is on developing a new ″powerful″ structure of functional BPCM. Rare earth elements with characteristic f orbitals are used as pore and wall strengthening units in this work. The new ″beam and column structure″ BPCM was synthesized by the aerothermal method, and then, the magnetic BPCM was prepared. The results showed that the designed synthesis route was reasonable, BPCM with a steady-state beam and column structure was attained, and the La element played a stabilizing role in maintaining the overall BPCM. The La hybridization exhibits the characteristic of ″the stronger column and weaker beam″, and the La group is the ″column″ to strengthen the BPCM as the ″beam″. The functionalized BPCM (lanthanum-loaded magnetic chitosan-based porous carbon materials, MCPCM@La2O2CO3) obtained exhibited a transcendent efficient adsorption capacity with an average adsorption rate of 6.640 mg·g–1·min–1 and over 85% removal of different types of dye pollutants, which exceeded the adsorption performance of the materials of most other BPCMs. Ultrastructural analysis revealed that MCPCM@La2O2CO3 has a huge specific surface area of 1458.513 m2·g–1 and a magnetization value of 16.560 emu·g–1 for MCPCM@La2O2CO3. A new theoretical model for the adsorption of MCPCM@La2O2CO3 (multiple adsorption coexistence equation) was established. The theoretical equations clarify that the mechanism of pollutant removal by MCPCM@La2O2CO3 is different from the traditional adsorption model, presenting a mechanism of coexistence of multiple adsorption types, displaying a monolayer–multilayer adsorption mechanism, influenced by the synergistic effects of H bonding, electrostatic attraction, π–π conjugation, and ligand interaction. The rapid coordination of the d orbitals of La is an obvious factor in enhancing the adsorption efficiency.

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Synthesis, thermal, optical, mechanical and radiation-attenuation characteristics of borate glass system modified by Bi2O3/MgO

et al. 2022

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Attenuation properties and radiation protection efficiency of Tb2O3-La2O3-P2O5 glass system

Cited by 22 publications

References 47 publications

Evaluation of Optical and Radiation Protection Parameters of High Refractive Index Polymers

Evaluation of Optical and Radiation Protection Parameters of High Refractive Index Polymers

Construction of Lanthanide Magnetic Bio-Based Porous Carbon Materials with Beam and Column Structure and Its Synergistic Adsorption Performance

Synthesis, thermal, optical, mechanical and radiation-attenuation characteristics of borate glass system modified by Bi2O3/MgO

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