期刊
CHEMICAL ENGINEERING JOURNAL
卷 372, 期 -, 页码 390-398出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.cej.2019.04.174
关键词
MoSe2; Flower-like; Morphology configuration; Selective; Microwave absorption
资金
- National Nature Science Foundation of China [11575085]
- Aeronautics Science Foundation of China [2017ZF52066]
- Qing Lan Project
- Six talent peaks project in Jiangsu Province [XCL-035]
- Funding for Outstanding Doctoral Dissertation in NUAA [BCXJ17-07]
- Postgraduate Research & Practice Innovation of Jiangsu Province [KYCX17_0252]
- Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD)
MoSe2 is a compelling narrow-band-gap semiconductor with particular lamellar crystal structure, but which is rarely used as microwave absorber filler. Owing to the analogue molecular structure with MoS2, it may be a potential dielectric dissipation candidate. The hierarchical flower-like structure has been wide accepted as attractive morphology due to its possible strong multiple scattering and reflecting abilities for microwave, thus, in this study, we employed a facile solvothermal process to fabricate the unique flower-like MoSe2 spheres for eliminating microwave interference issue. Further through the precise tuning of morphology configurations of flower-like MoSe2, the effective absorption to specific microwave frequency band can be well optimized, even including low-frequency band. The microwave absorption (MA) performance results show that the dense-flower samples could achieve full absorption in Ku-band and blooming-flower samples cover the entire X-band. The hollow-flower sample is good at absorption in low frequency of C-band and X-band. Our work not only develops outstanding microwave absorber candidates through delicate nanostructure design, but also paves a new way for tuning effective frequency band via tailoring morphology configurations.
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