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Sulfur-vacancy engineering of natural molybdenite for enhanced EMW absorption by Zhongyi Bai; Xiangyang Yang; Mengjie Wang; Biao Zhao; Yumei Ren; Ruosong Li; Xiaoqin Guo; Jiushuai Deng is a Engineering article available to read on EtoBox.
What is Sulfur-vacancy engineering of natural molybdenite for enhanced EMW absorption about?
The fine processing and functional application of natural minerals are crucial for allowing the comprehensive utilization of natural mineral resources. This paper reports the modification of natural molybdenite: S-vacancies are used to promote the attenuation of electromagnetic waves (EMWs) in molybdenite matrix composites, thus improving the EMW absorption performance of molybdenite. First, S-vacancies are constructed on the base plane of molybdenite (MoS(2-x)) via treatment with NaBH4. The generated S-vacancies are found to change the original electronic layout, reduce the energy gap, and increase the probability of charge transfer within molybdenite. Concomitantly, the introduction of S-vacancies increases the number of active sites for interfacial and defecs polarization in molybdenite. MoS(2-x)-1 shows a higher absorption performance, with a minimum reflection loss (RLmin) of − 34.35 dB (the absorbing layer thickness is 2.1 mm). The attenuation of EMWs by MoS(2-x) is attributed to a dielectric loss mechanism in which the polarization loss is dominant, and the increase in internal charge transfer promotes conductive loss. The findings of this study greatly expand the applicatio
Who reads Sulfur-vacancy engineering of natural molybdenite for enhanced EMW absorption?
It is typically read by researchers, students, and practitioners in Engineering.
- Author
- Zhongyi Bai; Xiangyang Yang; Mengjie Wang; Biao Zhao; Yumei Ren; Ruosong Li; Xiaoqin Guo; Jiushuai Deng
- Publisher
- Elsevier BV
- Published
- 2023
- Language
- EN
- Field
- Engineering (Physical Sciences)