Natural leather based gamma-ray shielding materials enabled by the coordination of well-dispersed Bi3+/Ba2+ ions and RE2O3 coating

Journal of Leather Science and Engineering Pub Date : 2022-06-15 DOI:10.1186/s42825-022-00090-7

Yue Shen, Jibo Zhou, Zheng Han, Hao Li, Linping Yan, Xuepin Liao, Bi Shi

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引用次数: 4

Abstract

Gamma rays is widely used in modern science and technology, but it may cause health damage to practitioners. In the present study, natural composites based on leather and high-Z elements (atomic number ≥ 56) were fabricated and used as gamma rays shielding materials. These shielding materials were prepared by coating rare earth nanoparticles (Er₂O₃ or La₂O₃) onto the surface of natural leather, which was first impregnated with Bi³⁺ and Ba²⁺. Results show that the attenuation efficiency of the prepared Er_1.31Bi_5.46-NL (1.31 and 5.46 mmol cm⁻³ loaded elements) with thickness of 3.2 mm was 61.57% for incident rays at 121.78 keV (¹⁵²Eu) and reached 96.4% in the incident of 59.5 keV (²⁴¹Am), which is comparable to that of 0.25-mm lead plate (54.54 mmol cm⁻³). In addition, these natural-leather-based shielding materials exhibited low density (approximately 1/10 of Pb), high strength and wearable behaviors.

Graphical abstract

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由分散良好的Bi3+/Ba2+离子和RE2O3涂层配合而成的天然皮革基γ射线屏蔽材料

伽马射线在现代科学技术中被广泛应用，但它可能对从业人员的健康造成损害。在本研究中，制备了基于皮革和高z元素(原子序数≥56)的天然复合材料，并将其用作伽马射线屏蔽材料。这些屏蔽材料是通过在天然皮革表面涂覆稀土纳米粒子(Er2O3或La2O3)，并首先浸渍Bi3+和Ba2+制备的。结果表明，制备的厚度为3.2 mm的Er1.31Bi5.46-NL(负载元素为1.31和5.46 mmol cm−3)在121.78 keV (152Eu)入射光线下的衰减效率为61.57%，在59.5 keV (241Am)入射光线下的衰减效率为96.4%，与0.25 mm铅板(54.54 mmol cm−3)相当。此外，这些天然皮革基屏蔽材料具有低密度(约为Pb的1/10)、高强度和耐磨性能。图形抽象

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来源期刊

Journal of Leather Science and Engineering 工程技术-材料科学：综合

CiteScore

12.80

自引率

0.00%

发文量