增强γ射线屏蔽性能的Al2O3纳米纳米复合材料的合成与表征

IF 1.8 3区工程技术 Q3 CHEMISTRY, INORGANIC & NUCLEAR

Applied Radiation and Isotopes Pub Date : 2025-09-02 DOI:10.1016/j.apradiso.2025.112157

Noor E. Naji, Ali A. Aljubouri, Raid A. Ismail

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引用次数: 0

摘要

本文采用直流反应溅射技术合成了Al2O3纳米粉体，并对其结构特性进行了研究。FE-SEM结果表明，颗粒的平均粒径在25 ~ 35 nm之间，呈近似球形，颗粒分布均匀。这种纳米粉末被嵌入到透明的环氧氯丙烷树脂中，以制造用于伽马射线屏蔽应用的纳米复合材料。相对防护效率（RPE）随着γ射线能量的增加和纳米复合材料中Al2O3纳米颗粒含量的增加而降低。制备的纳米复合材料样品厚度在0.3 ~ 1.5 cm之间，纳米颗粒含量在0.05 ~ 7 wt%之间，RPE值为3 ~ 17%。当纳米颗粒含量从0.5 wt%增加到7 wt%时，半值层（HVL）和十值层（TVL）略有下降，证实了所制备的纳米复合材料的辐射衰减能力增强。

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Synthesis and characterization of Al2O3 NPs/epichlorohydrin nanocomposites for enhanced gamma-ray shielding performance

In this work, Al₂O₃ nanopowder was synthesized using the DC reactive sputtering technique and its structural characteristics were examined. According to the FE-SEM, the average particle size ranged from 25 to 35 nm, with approximately spherical shape and uniform distribution of particles. This nanopowder was embedded into a transparent epichlorohydrin resin to fabricate nanocomposites intended for gamma-ray shielding applications. The relative protection efficiency (RPE) was found to decrease with increasing gamma-ray energy, as well as with higher Al₂O₃ nanoparticles content in the nanocomposite. The prepared nanocomposite samples, with thicknesses ranging from 0.3 to 1.5 cm and nanoparticles contents between 0.05 and 7 wt%, exhibited RPE values of 3–17 %. A slight decrease in half-value layer (HVL) and tenth-value layer (TVL) was observed as the nanoparticles content increased from 0.5 to 7 wt%, confirming the enhanced radiation attenuation capability of the prepared nanocomposites.

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来源期刊

Applied Radiation and Isotopes 工程技术-核科学技术

CiteScore

3.00

自引率

12.50%

发文量

406

审稿时长

13.5 months

期刊介绍： Applied Radiation and Isotopes provides a high quality medium for the publication of substantial, original and scientific and technological papers on the development and peaceful application of nuclear, radiation and radionuclide techniques in chemistry, physics, biochemistry, biology, medicine, security, engineering and in the earth, planetary and environmental sciences, all including dosimetry. Nuclear techniques are defined in the broadest sense and both experimental and theoretical papers are welcome. They include the development and use of α- and β-particles, X-rays and γ-rays, neutrons and other nuclear particles and radiations from all sources, including radionuclides, synchrotron sources, cyclotrons and reactors and from the natural environment. The journal aims to publish papers with significance to an international audience, containing substantial novelty and scientific impact. The Editors reserve the rights to reject, with or without external review, papers that do not meet these criteria. Papers dealing with radiation processing, i.e., where radiation is used to bring about a biological, chemical or physical change in a material, should be directed to our sister journal Radiation Physics and Chemistry.