Journal
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
Volume 128, Issue -, Pages 59-70Publisher
JOURNAL MATER SCI TECHNOL
DOI: 10.1016/j.jmst.2022.04.017
Keywords
Core@shell structure; MSe2/FeSe2@MoSe2 (M=Co, Ni); multicomponent nanocomposites; Flower-like geometry morphology; Broad frequency bandwidth; Microwave absorption
Funding
- Fund of Fok Ying Tung Education Foundation
- Major Research Project of innovative Group of Guizhou province [2018-013]
- Henan University of Science and Technology
- National Science Foundation of China [11964006, 11774156]
- Foundation of the National Key Project for Basic Research [2012CB932304]
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In this work, flower-like multicomponent nanocomposites (MCNCs) with core@shell structured MSe2/FeSe2@MoSe2 (M = Co, Ni) were synthesized through a simple two-step hydrothermal reaction. With increasing the amounts of Mo and Se sources, the obtained MCNCs showed enhanced content of MoSe2 and improved flower-like geometry morphology. The as-prepared samples exhibited improved comprehensive microwave absorption properties (CMAPs) with increased amounts of Mo and Se sources.
In this work, we put forward a scheme to exquisitely design and selectively synthesize the core@shell structured MSe2/FeSe2@MoSe2 (M = Co, Ni) flower-like multicomponent nanocomposites (MCNCs) through a simple two-step hydrothermal reaction on the surfaces of MFe2O4 nanospheres with the certain amounts of Mo and Se sources. With increasing the amounts of Mo and Se sources, the obtained core@shell structured MSe2 /FeSe2@MoSe2 (M = Co, Ni) MCNCs with the enhanced content of MoSe2 and improved flower-like geometry morphology could be produced on a large scale. The obtained results revealed that the as-prepared samples displayed improved comprehensive microwave absorption properties (CMAPs) with the increased amounts of Mo and Se sources. The as-prepared CoSe2/FeSe2 @MoSe2 and NiSe2/FeSe2@MoSe2 MCNCs with the well-defined flower-like morphology could simultaneously present the outstanding CMAPs in terms of strong absorption capability, wide absorption bandwidth, and thin matching thicknesses, which mainly originated from the conduction loss and flower-like geometry morphology. Therefore, the findings not only develop the very desirable candidates for high-performance microwave absorption materials but also pave a new way for optimizing the CMAPs through tailoring morphology engineering. (C) 2022 Published by Elsevier Ltd on behalf of The editorial office of Journal of Materials Science & Technology.
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