Controlled synthesis of anisotropic lead borate crystals and its co-shielding of neutron and gamma radiations

Wu, You; Zhang, Jian Ping; Zhou, Dong; Zhou, Yanyan; Zheng, Jian

doi:10.1016/j.jallcom.2017.08.219

Cited by 20 publications

(9 citation statements)

References 32 publications

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“…36 The attenuation of high energy photons can be calculated from I = I 0 exp(−μ m ρδ), where I is the transmitted photon radiation intensities and I 0 is the incident one. The radiation shielding performance of MEPCMs was measured on a high-purity germanium gamma spectrometer with a mixed gamma rays source composed of Na -22 and Eu -155 (E~86, 105, and 511 keV).…”

Section: Radiation Shielding Performance Testingmentioning

confidence: 99%

“…The radiation shielding performance of MEPCMs was measured on a high-purity germanium gamma spectrometer with a mixed gamma rays source composed of Na -22 and Eu -155 (E~86, 105, and 511 keV). 36 The attenuation of high energy photons can be calculated from I = I 0 exp(−μ m ρδ), where I is the transmitted photon radiation intensities and I 0 is the incident one. μ m is the mass attenuation coefficient, and ρ and δ are the density (g/cm 3 ) and thickness (cm) of the sheet microcapsules sample.…”

Section: Radiation Shielding Performance Testingmentioning

confidence: 99%

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Phase change microcapsules with lead tungstate shell for gamma radiation shielding and thermal energy storage

et al. 2019

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Summary Novel microencapsulated phase change materials (MEPCMs) composed of the lead tungstate (PbWO4) shell and paraffin core were designed for shielding of gamma radiation as well as thermal energy storage. Such MEPCMs were prepared via self‐assembly methods and in‐situ precipitation. The PbWO4 shell with excellent photon attenuation can give the resulting MEPCMs an acceptable gamma radiation shielding capability. The chemical composition and structure of microcapsules samples were studied by X‐ray diffractometer (XRD) and Fourier‐transform infrared spectroscopy (FTIR). The effects of different core/shell mass ratios on the surface morphology and microstructure of the MEPCMs were determined by scanning electron microscopy (SEM), energy‐dispersive spectrometer (EDS), and transmission electronic microscopy (TEM). It was confirmed that the microcapsules exhibit a distinct core‐shell structure and a perfect spherical shape. Differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA) were used to present thermal stability and thermal‐storage capability of MEPCMs. A high‐purity germanium gamma spectrometer to measure the attenuation coefficient of the microcapsules for gamma rays showed that the MECPMs has good γ‐rays‐shielding property. The multifunction microcapsules in this study have great potential applications for building energy conservation as well as wearable personal protection in nuclear energy engineering.

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Section: Radiation Shielding Performance Testingmentioning

confidence: 99%

Section: Radiation Shielding Performance Testingmentioning

confidence: 99%

Phase change microcapsules with lead tungstate shell for gamma radiation shielding and thermal energy storage

et al. 2019

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“…Therefore, it is particularly important and urgent to study new γ-ray shielding materials with excellent comprehensive performance and simple process. 14–16…”

Section: Introductionmentioning

confidence: 99%

Properties of Bi₂O₃/epoxy resin–coated composites for protection against gamma rays

Peng

Zhao

et al. 2022

Journal of Industrial Textiles

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In this paper, bismuth oxide (Bi2O3) as the main functional powder, lead (Pb) and tantalum (Ta) as the metal additives, epoxy resin as the matrix and polyester–cotton blended woven fabric as the substrate, Bi2O3 coating nuclear radiation protection composite, Bi2O3/Pb coating nuclear radiation protection composite, and Bi2O3/Ta coating nuclear radiation protection composite with different process parameters were prepared. The cross-section scanning analysis and the influence factor analysis of γ-ray protection performance were carried out, and the mechanical properties of the composites were discussed. The results show that an increase in Bi2O3 content (mass fraction) and an increase in coating thickness can improve the shielding rate of the composite materials to γ-rays. When the thickness of the coating is 1.6 mm and the content of Bi2O3 is 50%, the shielding rate of the composite to γ-rays (at 59.5 keV) reaches 46.1%. The shielding rate of the composite can be increased by adding appropriate metal additives, and the effect of adding Ta is better than that of Pb. The shielding rate of the composite to γ-rays (59.5 keV) can be increased from 28.4% to 31.5% by adding 5% Ta. An increase in Bi2O3 content (mass fraction) and an increase in the coating thickness can aggravate the agglomeration of functional particles in the material. The addition of metal additives can reduce agglomeration to a certain extent. Bi2O3 content, coating thickness, and metal additives all have an effect on the mechanical properties of the composite. If the coating is too thick or the functional particle content is too high, the tensile strength and elongation at break of the composite will be reduced.

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“…Development of nuclear-based technologies and usage of X-ray waves as an ionized radiation source for diverse applications—e.g., radiation therapy, medical applications, imaging, space technology, and agricultural applications—have improved the interaction of living species with these kinds of harmful electromagnetic sources [ 1 , 2 , 3 , 4 , 5 , 6 , 7 , 8 ]. Receiving high dosage of ionizing radiation can be lethal to living cells by deteriorating/damaging the DNA of their cells.…”

Section: Introductionmentioning

confidence: 99%

Superior X-ray Radiation Shielding Effectiveness of Biocompatible Polyaniline Reinforced with Hybrid Graphene Oxide-Iron Tungsten Nitride Flakes

et al. 2020

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X-ray radiation is a harmful carcinogenic electromagnetic source that can adversely affect the health of living species and deteriorate the DNA of cells, thus it’s vital to protect vulnerable sources from them. To address this flaw, the conductive polymeric structure of polyaniline (PANi) was reinforced with diverse filler loadings (i.e., 25 wt % and 50 wt %) of hybrid graphene oxide-iron tungsten nitride (ITN) flakes toward attenuation of X-ray beams and inhabitation of microorganisms’ growth. Primary characterizations confirmed the successful decoration of graphene oxide (GO) with interconnected and highly dense structure of iron tungsten nitride with a density of about 24.21 g·cm−3 and reinforcement of PANi with GO-ITN. Additionally, the outcome of evaluations showed the superior performance of developed shields, where a shield with 1.2 mm thickness containing 50 wt % GO-ITN showed 131.73% increase in the electrical conductivity (compared with neat PANi) along with 78.07%, 57.12%, and 44.99% decrease in the amplitude of the total irradiated X-ray waves at 30, 40, and 60 kVp tube voltages, respectively, compared with control X-ray dosage. More importantly, the developed shields not only showed non-toxic nature and improved the viability of cells, but also completely removed the selected microorganisms at a concentration of 1000 µg·mL−1.

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Controlled synthesis of anisotropic lead borate crystals and its co-shielding of neutron and gamma radiations

Cited by 20 publications

References 32 publications

Phase change microcapsules with lead tungstate shell for gamma radiation shielding and thermal energy storage

Phase change microcapsules with lead tungstate shell for gamma radiation shielding and thermal energy storage

Properties of Bi₂O₃/epoxy resin–coated composites for protection against gamma rays

Superior X-ray Radiation Shielding Effectiveness of Biocompatible Polyaniline Reinforced with Hybrid Graphene Oxide-Iron Tungsten Nitride Flakes

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Controlled synthesis of anisotropic lead borate crystals and its co-shielding of neutron and gamma radiations

Cited by 20 publications

References 32 publications

Phase change microcapsules with lead tungstate shell for gamma radiation shielding and thermal energy storage

Phase change microcapsules with lead tungstate shell for gamma radiation shielding and thermal energy storage

Properties of Bi2O3/epoxy resin–coated composites for protection against gamma rays

Superior X-ray Radiation Shielding Effectiveness of Biocompatible Polyaniline Reinforced with Hybrid Graphene Oxide-Iron Tungsten Nitride Flakes

Contact Info

Product

Resources

About

Properties of Bi₂O₃/epoxy resin–coated composites for protection against gamma rays