The Influence of Bi2O3 Nanoparticle Content on the γ-ray Interaction Parameters of Silicon Rubber

Abbas, Mahmoud I.; El‐Khatib, Ahmed M.; Dib, Mirvat Fawzi; Mustafa, Hoda Ezzelddin; Sayyed, M.I.; Elsafi, Mohamed

doi:10.3390/polym14051048

Cited by 26 publications

(12 citation statements)

References 38 publications

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“…The μ and μ m values of some commonly used shielding materials are shown in Fig. 3f [32][33][34][35][36][37][38][39] . As can be seen, the current MAPbI 3 /epoxy composites have superior gamma ray (59.5 keV) shielding ability, as indicated by their large μ and μ m values relative to most of the commonly used shielding materials.…”

Section: Gamma-ray Shielding Performance Of the Mapbi 3 / Epoxy Compo...mentioning

confidence: 99%

Crystal plane engineering of MAPbI<sub>3</sub> in epoxy-based materials for superior gamma-ray shielding performance

Cui¹,

Li²,

Wei³

et al. 2022

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The rapid development of the aerospace and nuclear industries is accompanied by increased exposure to highenergy ionising radiation. Thus, the performance of radiation shielding materials needs to be improved to extend the service life of detectors and ensure the safety of personnel. The development of novel lightweight materials with high electron density has therefore become urgent to alleviate radiation risks. In this work, new MAPbI 3 /epoxy (CH 3 NH 3 PbI 3 /epoxy) composites were prepared via a crystal plane engineering strategy. These composites delivered excellent radiation shielding performance against 59.5 keV gamma rays. A high linear attenuation coefficient (1.887 cm −1 ) and mass attenuation coefficient (1.352 cm 2 g −1 ) were achieved for a representative MAPbI 3 /epoxy composite, which was 10 times higher than that of the epoxy. Theoretical calculations indicate that the electron density of MAPbI 3 /epoxy composites significantly increases when the content ratio of the (110) plane in MAPbI 3 increases. As a result, the chances of collision between the incident gamma rays and electrons in the MAPbI 3 /epoxy composites were enhanced. The present work provides a novel strategy for designing and developing high-efficiency radiation shielding materials.

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Section: Gamma-ray Shielding Performance Of the Mapbi 3 / Epoxy Compo...mentioning

confidence: 99%

Crystal plane engineering of MAPbI<sub>3</sub> in epoxy-based materials for superior gamma-ray shielding performance

Cui¹,

Li²,

Wei³

et al. 2022

gxjzz

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“…The study demonstrated that nano dopant is more successful and effective in attenuating the photons. Abbas et al studied the effect of Bi 2 O 3 micro- and nano-particles content on silicon rubber’s (SR) γ-ray interaction parameters 35 . The attenuation coefficients of the obtained SR samples showed a clear advantage in lower energy levels compared to other energies.…”

Section: Introductionmentioning

confidence: 99%

Attenuation properties of poly methyl methacrylate reinforced with micro/nano ZrO2 as gamma-ray shields

Alabsy,

Abbas,

El-khatib

et al. 2024

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This research aimed to examine the radiation shielding properties of unique polymer composites for medical and non-medical applications. For this purpose, polymer composites, based on poly methyl methacrylate (PMMA) as a matrix, were prepared and reinforced with micro- and nanoparticles of ZrO2 fillers at a loading of 15%, 30%, and 45% by weight. Using the high purity germanium (HPGe) detector, the suggested polymer composites’ shielding characteristics were assessed for various radioactive sources. The experimental values of the mass attenuation coefficients (MAC) of the produced composites agreed closely with those obtained theoretically from the XCOM database. Different shielding parameters were estimated at a broad range of photon energies, including the linear attenuation coefficient (μ), tenth value layer (TVL), half value layer (HVL), mean free path (MFP), effective electron density (Neff), effective atomic number (Zeff), and equivalent atomic number (Zeq), as well as exposure buildup factor (EBF) and energy absorption buildup factor (EABF) to provide more shielding information about the penetration of γ-rays into the chosen composites. The results showed that increasing the content of micro and nano ZrO2 particles in the PMMA matrix increases μ values and decreases HVL, TVL, and MFP values. P-45nZ sample with 45 wt% of ZrO2 nanoparticles had the highest μ values, which varied between 2.6546 and 0.0991 cm−1 as γ-ray photon energy increased from 0.0595 to 1.408 MeV, respectively. Furthermore, the highest relative increase rate in μ values between nano and micro composites was 17.84%, achieved for the P-45nZ sample at 59.53 keV. These findings demonstrated that ZrO2 nanoparticles shield radiation more effectively than micro ZrO2 even at the same photon energy and filler wt%. Thus, the proposed nano ZrO2/PMMA composites can be used as effective shielding materials to lessen the transmitted radiation dose in radiation facilities.

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“…Thus, there is an urgent need to find sustainable radiation shielding material to protect humans and the environment from the destructive impact of radiation [ 5 , 6 ]. Bismuth oxide Bi 2 O 3 was selected in this study due to its higher atomic number and nontoxicity; furthermore, it is considered a high-density material suitable for radiation shielding and has been applied to various materials such as glass [ 7 , 8 ], rubber [ 9 , 10 ], and building materials [ 11 , 12 , 13 ].…”

Section: Introductionmentioning

confidence: 99%

Gamma Attenuation Features of White Cement Mortars Reinforced by Micro/Nano Bi2O3 Particles

et al. 2023

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This study aims to explore the radiation protection properties of white mortars based on white cement as a binder and Bi2O3 micro and nanoparticles in proportions of 15 and 30% by weight as replacement sand. The average particle size of micro- and nano-Bi2O3 was measured using a transmission electron microscope (TEM). The cross-sectional morphology and distribution of Bi2O3 within the samples can be obtained by scanning electron microscopy (SEM), showing that nanoscale Bi2O3 particles have a more homogeneous distribution within the samples than microscale Bi2O3 particles. The shielding parameters of the proposed mortars were measured using the HPGe detector at various γ-ray energies emitted by standard radioactive point sources 241Am, 133Ba, 60Co, 137Cs, and 152Eu. The experimental values of the prepared mortars’ mass attenuation coefficients (MAC) match well with those determined theoretically from the XCOM database. Other shielding parameters, including half value layer (HVL), tenth value layer (TVL), mean free path (MFP), effective electron density (Neff), effective atomic number (Zeff), equivalent atomic number (Zeq), and exposure buildup factor (EBF), were also determined at different photon energies to provide more shielding information about the penetration of gamma radiation into the selected mortars. The obtained results indicated that the sample containing 30% by weight of nano Bi2O3 has the largest attenuation coefficient value. Furthermore, the results show that the sample with a high concentration of Bi2O3 has the highest equivalent atomic numbers and the lowest HVL, TVL, MFP, and EBF values. Finally, it can be concluded that Bi2O3 nanoparticles have higher efficiency and protection compared to microparticles, especially at lower gamma-ray energies.

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The Influence of Bi2O3 Nanoparticle Content on the γ-ray Interaction Parameters of Silicon Rubber

Cited by 26 publications

References 38 publications

Crystal plane engineering of MAPbI<sub>3</sub> in epoxy-based materials for superior gamma-ray shielding performance

Crystal plane engineering of MAPbI<sub>3</sub> in epoxy-based materials for superior gamma-ray shielding performance

Attenuation properties of poly methyl methacrylate reinforced with micro/nano ZrO2 as gamma-ray shields

Gamma Attenuation Features of White Cement Mortars Reinforced by Micro/Nano Bi2O3 Particles

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