Preparation and radiation attenuation properties of ceramic ball clay enhanced with micro and nano ZnO particles

Al‒Hadeethi, Yas; Sayyed, M.I.; Barasheed, Abeer Z.; Ahmed, Moustafa; Elsafi, Mohamed

doi:10.1016/j.jmrt.2021.12.109

Cited by 37 publications

(6 citation statements)

References 38 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…are important coefficients and their evaluation gives essential indications of the epoxy material's capability to absorb the gamma rays. The results of them were estimated by the following relationships 40 – 42 : …”

Section: Methodsmentioning

confidence: 99%

Grafting red clay with Bi2O3 nanoparticles into epoxy resin for gamma-ray shielding applications

Elsafi

Almuqrin

Almutairi

et al. 2023

Sci Rep

View full text Add to dashboard Cite

We developed new composites for photons shielding applications. The composite were prepared with epoxy resin, red clay and bismuth oxide nanoparticles (Bi2O3 NPs). In order to establish which ratio of red clay to Bi2O3 NPs provides the best shielding capabilities, several different ratios of red clay to Bi2O3 NPs were tested. The transmission factor (TF) was calculated for two different thicknesses of each sample. From the TF data, we found that epoxy resin materials have a high attenuation capacity at low energy. For ERB-10 sample (40%Epoxy + 50% Red clay + 10% Bi2O3 NPs), the TF values are 52.3% and 14.3% for thicknesses of 0.5 and 1.5 cm (at 0.06 MeV). The composite which contains the maximum amount of Bi2O3 nanoparticles (40%Epoxy + 50% Red clay + 10% Bi2O3 NPs, coded as ERB-30) has lower TF than the other composites. The TF data demonstrated that ERB-30 is capable of producing more effective attenuation from gamma rays. We also determined the linear attenuation coefficient (LAC) for the prepared composites and we found that the LAC increases for a given energy in proportion to the Bi2O3 NPs ratio. For the ERB-0 (free Bi2O3 NPs), the LAC at 0.662 MeV is 0.143 cm−1, and it increases to 0.805 cm−1 when 10% of Bi2O3 NPs is added to the epoxy resin composite. The half value layer (HVL) results showed that the thickness necessary to shield that photons to its half intensity can be significantly lowered by increasing the weight fraction of the Bi2O3 NPs in the epoxy resin composite from 0 to 30%. The HVL for ERB-20 and ERB-30 were compared with other materials such as (Epoxy as a matrix material and Al2O3, Fe2O3, MgO and ZrO2 as filler oxides in the matrix at 0.662 MeV. The HVL values for ERB-20 and ERB-30 are 4.385 and 3.988 cm and this is lower than all the selected epoxy polymers.

show abstract

Section: Methodsmentioning

confidence: 99%

Grafting red clay with Bi2O3 nanoparticles into epoxy resin for gamma-ray shielding applications

Elsafi

Almuqrin

Almutairi

et al. 2023

Sci Rep

View full text Add to dashboard Cite

show abstract

“…The experimental results were compared with results calculated theoretically by Phy-X software [38], an online program used to calculate the attenuation coefficients of radiation shielding and dosimetry. Attenuation parameters that depend on LAC calculation such as half-value layer (HVL) and mean free path (MFP) were calculated by the following equations [39][40][41][42][43][44][45][46].…”

Section: Methodsmentioning

confidence: 99%

Radiation Shielding Enhancement of Polyester Adding Artificial Marble Materials and WO3 Nanoparticles

et al. 2022

Self Cite

View full text Add to dashboard Cite

The radiation shielding abilities of waste marbles with different concentrations of WO3 (tungsten oxide) nanoparticles were investigated. Four marbles were prepared with 0, 0.05, 0.1, and 0.2 WO3 nanoparticles. The study aims to investigate the effect of the WO3 concentration, the density, and the particle size of the waste marble samples. The linear attenuation coefficient (LAC) of the S1 sample, the sample with no WO3, was determined theoretically and experimentally, and the results demonstrated that they were close enough together to adequately determine the LAC of the other samples. Additionally, the samples with nano-WO3, rather than micro-WO3, were found to have a greater LAC, showing that decreasing the particle size of the sample improves their shielding ability. Samples with greater WO3 content also had higher LAC values. The LAC of the marbles was also evaluated at a wide energy range (0.015–15 MeV) to examine the shielding properties of the samples for a wide range of applications, and an inverse trend between LAC and energy was observed. The radiation protection efficiency (RPE) of the marbles demonstrated that the marbles absorb almost all incoming photons at low energies. As energy increases, the efficiency of the samples naturally drops, as the photons are able to penetrate through them with greater ease. High energy dependence was found when calculating the half-value layers (HVL) of the samples. When comparing the LAC and mean free paths (MFP) of the marbles, an inverse relationship was observed. Furthermore, the samples with nano-WO3 had a smaller MFP than those with micro-WO3, meaning that decreasing the particle size of the samples improves their radiation shielding ability. The Zeff of the micro-WO3 samples was also determined and the values followed three distinctive trends depending on the energy range of the incoming photons.

show abstract

“…Electrons resulting from the interaction of photons with the detector accumulate to give different peaks. Wach peak corresponds to a different energy; these peaks depend on the intensity of the incident photon, the more the intensity of the photon increases the area of this peak and vice versa [ 30 , 31 , 32 ].…”

Section: Methodsmentioning

confidence: 99%

Investigation of the Gamma-ray Shielding Performance of CuO-CdO-Bi2O3 Bentonite Ceramics

et al. 2022

Self Cite

View full text Add to dashboard Cite

The purpose of this research is to identify the radiation shielding capability of ceramics adding CuO, CdO, and Bi2O3 with diverse wt (%). The chemical compositions of the raw ceramics were documented through Energy Dispersive X-ray “EDX” techniques. For aesthetic appeal and solidification, CuO has been chosen to be added to ceramic. Moreover, in the interest of increasing the radiation shielding ability, the high atomic number and density of both CdO and Bi2O3 were suggested for the raw ceramics. To obtain the morphological features of the prepared ceramic samples, a Scanning Electron Microscope, or SEM, was utilized. To verify the experimental results, the MCA value obtained from the Phy-X software was compared to the experimental value collected from the HPGe detector. At energies 0.06 MeV, 0.662 MeV, 1.173 MeV, and 1.333 MeV the linear and mass attenuation coefficients of the prepared ceramics have been measured using a high purity germanium “HPGe” detector as well as three different point sources. Moreover, the relationship between ln(I) and the thickness of the ceramics has been presented here, and the comparison between the LAC of the prepared ceramics with other materials has also been displayed. Bentonite ceramic containing CuO (15 mol %)-CdO (15 mol %)-Bi2O3 (20 mol %) with density 3.6 showed the lowest HVL, MFP, and TVL at all studied energies, yet pure Bentonite ceramic containing only CuO (50 mol %), having density 3.4, presented the greatest values. Hence, it can be concluded that the addition of CdO and Bi2O3 enhances the radiation shielding ability.

show abstract

Preparation and radiation attenuation properties of ceramic ball clay enhanced with micro and nano ZnO particles

Cited by 37 publications

References 38 publications

Grafting red clay with Bi2O3 nanoparticles into epoxy resin for gamma-ray shielding applications

Grafting red clay with Bi2O3 nanoparticles into epoxy resin for gamma-ray shielding applications

Radiation Shielding Enhancement of Polyester Adding Artificial Marble Materials and WO3 Nanoparticles

Investigation of the Gamma-ray Shielding Performance of CuO-CdO-Bi2O3 Bentonite Ceramics

Contact Info

Product

Resources

About