Natural leather based gamma-ray shielding materials enabled by the coordination of well-dispersed Bi^(3+)/Ba^(2+)ions and RE_(2)O_(3)coating  

作　　者：Yue Shen Jibo Zhou Zheng Han Hao Li Linping Yan Xuepin Liao Bi Shi 

机构地区：[1]Department of Biomass Science and Engineering,Chengdu 610065,China [2]The Key Laboratory of Leather Chemistry and Engineering of Ministry of Education,Sichuan University,Chengdu 610065,China [3]Institute of Nuclear Science and Technology,Sichuan University,Chengdu 610065,China.

出　　处：《Journal of Leather Science and Engineering》2022年第1期214-224,共11页皮革科学与工程（英文）

基　　金：The National Natural Science Foundation of China(No.21878191).

摘　　要：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(Er_(2)O_(3)or La2O3)onto the surface of natural leather,which was first impregnated with Bi^(3+)and Ba^(2+).Results show that the attenuation efficiency of the prepared Er1.31Bi5.46-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.

关 键 词：Gamma rays Natural leather High-Z elements Rare earth elements Nanoparticles WEARABILITY Attenuation efficiency 

分 类 号：TS56[轻工技术与工程—皮革化学与工程] TB33[一般工业技术—材料科学与工程]