芦荟--辅助镁硼氧化物/镁铜硼氧化物/镁钡硼氧化物纳米复合材料作为有效的伽马屏蔽新型材料

IF 3.3 3区工程技术 Q1 NUCLEAR SCIENCE & TECHNOLOGY

Progress in Nuclear Energy Pub Date : 2024-10-04 DOI:10.1016/j.pnucene.2024.105470

K. Kruthika , S.M. Rumana Farheen , H.C. Manjunatha , Y.S. Vidya , S. Manjunatha , R. Munirathnam , S. Krishnaveni , K.N. Sridhar

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引用次数: 0

摘要

首次采用芦荟（Aloe barbadensis）介导的溶液燃烧法合成了 MgO/Bi2O3 (1:1) (MBO)、MgO/CuO/Bi2O3 (1:1:1) (MCBO) 和 MgO/BaO/Bi2O3 (1:1:1) (MBBO) 二元/三元纳米复合材料（NCs）。获得的镁基纳米复合材料采用了多种分析表征方法，包括粉末 X 射线衍射（PXRD）、扫描电子显微镜（SEM）、能量色散 X 射线光谱（EDS）、傅立叶变换红外光谱（FTIR）和紫外可见光谱（UV-Vis）。布拉格反射证实了单斜相 BaO、Bi2O3、立方 MgO 和四方 CuO 纳米粒子的形成。MBO、MCBO 和 MBBO NCs 的表面形态由不规则大小、叶状和毛刺状结构的团聚 NPs 组成，并带有空洞和空隙/孔隙。根据 W-H（Wood and Tauc's）图确定的 MBO、MCBO 和 MBBO NCs 的 Eg（直接能带隙）分别为 3.09、3.19 和 3.12 eV。伽马辐射屏蔽性能的评估是使用与多通道分析仪相连的 NaI（Tl）探测器进行的。测量了 MBO、MCBO 和 MBBO 的屏蔽参数，如 μ/ρ（质量衰减系数）、λ（平均自由路径）、HVL（半值层）、TVL（十值层）。在新合成的镁基 NCs 中，与 MCBO 和 MBBO 相比，MBO 表现出更好的屏蔽性能。因此，所制备的镁基 NC 适用于对减重要求较高的应用领域，如航空航天或便携式辐射屏蔽系统。

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Aloe barbadensis - Assisted MgBiO/MgCuBiO/MgBaBiO nanocomposites as effective gamma shielding novel materials

For the first of its kind, MgO/Bi₂O₃ (1:1) (MBO), MgO/CuO/Bi₂O₃ (1:1:1) (MCBO) and MgO/BaO/Bi₂O₃ (1:1:1) (MBBO) binary/ternary nanocomposites (NCs) were synthesized by Aloe barbadensis (Aloe vera) mediated solution combustion method. The as-formed NCs are subjected to calcination for 3 h at 600^oC.The Mg-based NCs acquired are subjected to various analytical characterization methodologies, including PXRD (Powder X-ray Diffraction), SEM (Scanning Electron Microscopy), EDS (Energy Dispersive X-ray Spectroscopy), FTIR (Fourier Transform Infrared Spectroscopy), and Ultraviolet–Visible Spectroscopy (UV–Vis). The Bragg reflections confirm the formation of monoclinic phase BaO, Bi₂O₃, cubic MgO and tetragonal CuO nanoparticles. The surface morphology of MBO, MCBO and MBBO NCs consists of irregular sized, leafy and burrow like structured agglomerated NPs with hollows and voids/pores. The Eg (direct energy band gap) determined from W-H (Wood and Tauc's) plot was found to be 3.09, 3.19 and 3.12 eV for MBO, MCBO and MBBO NCs respectively. The evaluation of gamma radiation shielding properties was conducted using a NaI (Tl) detector connected to a multi-channel analyzer. Shielding parameters of MBO, MCBO and MBBO, such as μ/ρ (mass attenuation coefficient), λ (mean free path), HVL (half-value layer), TVL (tenth-value layer) are measured. Among the as-synthesized Mg-based NCs, MBO exhibits better shielding properties compared to MCBO and MBBO. Thus, the procured Mg-based NCs are suitable for applications where weight reduction is critical, such as aerospace or portable radiation shielding systems.

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来源期刊

Progress in Nuclear Energy 工程技术-核科学技术

CiteScore

5.30

自引率

14.80%

发文量

331

审稿时长

3.5 months

期刊介绍： Progress in Nuclear Energy is an international review journal covering all aspects of nuclear science and engineering. In keeping with the maturity of nuclear power, articles on safety, siting and environmental problems are encouraged, as are those associated with economics and fuel management. However, basic physics and engineering will remain an important aspect of the editorial policy. Articles published are either of a review nature or present new material in more depth. They are aimed at researchers and technically-oriented managers working in the nuclear energy field. Please note the following: 1) PNE seeks high quality research papers which are medium to long in length. Short research papers should be submitted to the journal Annals in Nuclear Energy. 2) PNE reserves the right to reject papers which are based solely on routine application of computer codes used to produce reactor designs or explain existing reactor phenomena. Such papers, although worthy, are best left as laboratory reports whereas Progress in Nuclear Energy seeks papers of originality, which are archival in nature, in the fields of mathematical and experimental nuclear technology, including fission, fusion (blanket physics, radiation damage), safety, materials aspects, economics, etc. 3) Review papers, which may occasionally be invited, are particularly sought by the journal in these fields.