Structure, Optical and Radiation Shielding Features of Zn1 − xMgxO/Mn3O4/MnO Nanocomposites

IF 2.7 4区 化学 Q2 CHEMISTRY, INORGANIC & NUCLEAR
Zein K. Heiba, M. M. Ghannam, Ali Badawi, Mohamed Bakr Mohamed
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引用次数: 0

Abstract

Zn1 − xMgxO/Mn3O4/MnO (x = 0, 0.01, 0.03) nanocomposite samples were produced using the solid-state reaction at low temperature. The phase analysis for the synchrotron x-ray diffraction data for all samples was performed using the search match software. We determined the phase percentages using the Rietveld method. The crystallite sizes for all phases were determined. FTIR and Raman spectra confirmed the presence of ZnO, MnO and Mn3O4 phases in the formed samples. The Rietveld analysis-determined crystallite size anisotropy is evident in the rod-like form using the scanning electron microscopy technique. The absorbance and reflectance spectra of all samples were determined using UV–Vis diffuse reflectance technique. The optical band gap value depended on the amount of Mg in the samples. All samples have three optical band gaps assigned to ZnO, Mn3O4 and MnO phases. In comparison to higher energy photons, Zn1-xMgxO/Mn3O4/MnO nanocomposite samples showed a greater absorption rate for minimal energy photons. The results obtained suggest that Mg-containing materials are less likely to interact with gamma rays than to pass through them. The greatest fast neutron removal cross section (FNRCS) value was shown by the nanocomposite containing 1% of Mg. Our Mg-containing nanocomposite samples exhibit remarkable neutron shielding properties.

Abstract Image

Zn1 - xMgxO/Mn3O4/MnO 纳米复合材料的结构、光学和辐射屏蔽特性
采用低温固相反应制备了Zn1−xMgxO/Mn3O4/MnO (x = 0,0.01, 0.03)纳米复合材料样品。使用搜索匹配软件对所有样品的同步加速器x射线衍射数据进行相位分析。我们使用Rietveld法确定相百分比。测定了各相的晶粒尺寸。FTIR和拉曼光谱证实了形成样品中存在ZnO、MnO和Mn3O4相。利用扫描电子显微镜技术,Rietveld分析确定的晶体尺寸各向异性在棒状结构中是明显的。采用紫外-可见漫反射法测定样品的吸光度和反射光谱。光学带隙值与样品中Mg的含量有关。所有样品都有三个光学带隙分配给ZnO, Mn3O4和MnO相。与高能光子相比,Zn1-xMgxO/Mn3O4/MnO纳米复合材料样品对最小能量光子的吸收率更高。得到的结果表明,含镁材料不太可能与伽马射线相互作用,而是通过它们。Mg含量为1%的纳米复合材料的快中子去除截面(FNRCS)值最大。我们的含镁纳米复合材料样品具有显著的中子屏蔽性能。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Journal of Cluster Science
Journal of Cluster Science 化学-无机化学与核化学
CiteScore
6.70
自引率
0.00%
发文量
166
审稿时长
3 months
期刊介绍: The journal publishes the following types of papers: (a) original and important research; (b) authoritative comprehensive reviews or short overviews of topics of current interest; (c) brief but urgent communications on new significant research; and (d) commentaries intended to foster the exchange of innovative or provocative ideas, and to encourage dialogue, amongst researchers working in different cluster disciplines.
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