Optical and EPR Spectroscopy of Natural Zeolite Modified by Microwave-Assisted Method

IF 0.5 4区 物理与天体物理 Q4 PHYSICS, MULTIDISCIPLINARY Journal of Contemporary Physics (Armenian Academy of Sciences) Pub Date : 2022-12-26 DOI:10.1134/S106833722204003X
N. R. Aghamalyan, G. R. Badalyan, A. T. Gyulasaryan, M. N. Nersisyan, G. N. Chilingaryan, A. S. Saakov, A. A. Sargsyan, V. V. Baghramyan
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Abstract

Samples of natural zeolite from the Nor-Kokhb deposit (Armenia), as well as its chemically and thermally modified by the microwave method in comparison with the traditional method, were studied. It was shown that the process of microwave processing proceeds 3 times faster than the traditional one. X-ray diffraction analysis shows that the main mineral in the zeolite samples under study is clinoptilolite. According to the results of optical and EPR spectroscopy, the presence of Fe3+ ions in the framework and extraframework positions of the zeolite was revealed. The study of diffuse reflection spectra allows to conclude that zeolite is a wide-band material with a bandgap of 4.14 eV.

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微波辅助改性天然沸石的光学和EPR光谱
研究了亚美尼亚Nor-Kokhb矿床天然沸石样品,并对其进行了微波化学和热改性,并与传统方法进行了比较。结果表明,微波处理的速度是传统处理的3倍。x射线衍射分析表明,沸石样品的主要矿物为斜沸石。根据光学和电子磁共振光谱的结果,揭示了Fe3+离子在沸石骨架和骨架外位置的存在。对沸石的漫反射光谱研究表明,沸石是一种带隙为4.14 eV的宽带材料。
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来源期刊
CiteScore
1.00
自引率
66.70%
发文量
43
审稿时长
6-12 weeks
期刊介绍: Journal of Contemporary Physics (Armenian Academy of Sciences) is a journal that covers all fields of modern physics. It publishes significant contributions in such areas of theoretical and applied science as interaction of elementary particles at superhigh energies, elementary particle physics, charged particle interactions with matter, physics of semiconductors and semiconductor devices, physics of condensed matter, radiophysics and radioelectronics, optics and quantum electronics, quantum size effects, nanophysics, sensorics, and superconductivity.
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