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氧化铜/硼硅酸银玻璃的制备、物理、光学、电子自旋共振及γ射线衰减效能研究

Preparation, physical, optical, ESR and γ-ray attenuation efficacy investigation of copper oxide/silver borosilicate glass.

作者信息

El-Seidy Ahmed M A, Sallam O I, Nabil Islam M, Rammah Yasser S, El-Okaily Mohamed S, Alshater Heba

机构信息

Inorganic Chemistry Department, Advanced Materials Technology & Mineral Resources Research Institute, National Research Centre, El-bohouth St., Dokki, P.O. 12622, Cairo, Egypt.

Glass Lab, Radiation Chemistry Department, National Center for Radiation Research and Technology, Egyptian Atomic Energy Authority (EAEA), Cairo, Egypt.

出版信息

Sci Rep. 2024 Oct 25;14(1):25354. doi: 10.1038/s41598-024-75017-9.

Abstract

The sonication method was used to prepare a new set of CuO and CuO/Ag nanocomposites. The particle size was estimated using XRD and HR-TEM while the morphology of the nanoparticles was investigated with SEM. The average particle sizes of CuO and Ag falls in the 29.32-35.80 nm and 35.13-45.95 nm ranges, respectively. XRD declared that CuO has the space groups C 1 c 1 (9) and C 1 2/c 1 (15), while silver has space group F m -3 m (225). XPS analysis indicated the presence of Ag as Ag and Cu as Cu. Nano-oxide and nanocomposites were used to synthesis CuO and CuO/Ag doped lithium-zinc borosilicate glass. Physical parameters of the glass samples were calculated including density, , , , OPD, , , and N, , and depending on Ag and CuO mole fractions. The physical properties of glass indicated an increase in density and an initial expansion in glass structural network with the addition of silver metal due to its larger size followed by a compression as its molar ratio increase due to its higher . XRD measurements were reported for the glass samples doped with nanoparticles, proving the amorphous phase. ESR measurements were determined for all glass samples to detect the nature of the doped nanoparticles when incorporated inside a glassy matrix where CuO was found as tetragonal in octahedral sites and silver can be transformed after melting inside the glass matrix into Ag to form more stable clusters.The fabricated sample of CuAgB-4 with significant nano silver doping (7.32% mol) has the maximum LAc and effective atomic number. Nano silver content increases the -RdSg in the lithium-zinc borosilicate glasses.

摘要

采用超声处理方法制备了一组新的CuO和CuO/Ag纳米复合材料。使用XRD和高分辨透射电子显微镜(HR-TEM)估算粒径,并用扫描电子显微镜(SEM)研究纳米颗粒的形态。CuO和Ag的平均粒径分别落在29.32 - 35.80 nm和35.13 - 45.95 nm范围内。XRD表明CuO具有空间群C 1 c 1 (9)和C 1 2/c 1 (15),而银具有空间群F m -3 m (225)。X射线光电子能谱(XPS)分析表明存在Ag⁰和Cu²⁺。使用纳米氧化物和纳米复合材料合成了CuO和CuO/Ag掺杂的锂锌硼硅酸盐玻璃。计算了玻璃样品的物理参数,包括密度、 、 、 、光学碱度(OPD)、 、 以及N、 和 ,这些参数取决于Ag和CuO的摩尔分数。玻璃的物理性质表明,由于银金属尺寸较大,添加银金属后密度增加,玻璃结构网络最初膨胀,随后随着其摩尔比增加,由于其更高的 ,结构发生压缩。报道了掺杂纳米颗粒的玻璃样品的XRD测量结果,证明其为非晶相。对所有玻璃样品进行了电子自旋共振(ESR)测量,以检测掺杂纳米颗粒掺入玻璃基体时的性质,发现CuO在八面体位置呈四方结构,银在玻璃基体中熔化后可转变为Ag⁺形成更稳定的 簇。具有显著纳米银掺杂(7.32%摩尔)的CuAgB - 4制备样品具有最大的激光吸收系数(LAc)和有效原子序数。纳米银含量增加了锂锌硼硅酸盐玻璃中的 -RdSg。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/11f8/11512057/321eb49af9a6/41598_2024_75017_Fig1_HTML.jpg

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