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Research Article

Anion regulating endows core@shell structured hollow carbon spheres@MoSxSe2−x with tunable and boosted microwave absorption performance

Junxiong Xiao1, Xiaosi Qi1,2( ), Lei Wang3, Tao Jing4, Jing-Liang Yang1( ), Xiu Gong1, Yanli Chen1, Yunpeng Qu1, Qiong Peng1, Wei Zhong2
College of Physics, Guizhou Province Key Laboratory for Photoelectrics Technology and Application, Guizhou University, Guiyang 550025, China
National Laboratory of Solid State Microstructures and Jiangsu Provincial Laboratory for NanoTechnology, Nanjing University, Nanjing 210093, China
National Demonstration Center for Experimental Materials Science and Engineering Education, Jiangsu University of Science and Technology, Zhenjiang 212003, China
College of Science, Kaili University, Kaili 556011, China
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Graphical Abstract

By the anion regulating, the core@shell structural hollow carbon sphere@MoSxS2–x present boosted microwave absorption performance, which can be attributed to the synergistic effect of defect and interface engineering.

Abstract

Due to the good manipulation of electronic structure and defect, anion regulating should be a promising strategy to regulate the electromagnetic (EM) parameters and optimize the EM wave absorption performances (EMWAPs). In this work, we proposed a facile route for the large-scale production of core@shell structured hollow carbon spheres@MoSxSe2−x (x = 0.2, 0.6, and 1.0) multicomponent nanocomposites (MCNCs) through a mild template method followed by hydrothermal process. The obtained results revealed that the designed hollow carbon spheres@MoSxSe2−x MCNCs presented the improved sulfur vacancy concentration by regulating the x value from 0.2 to 1.0. The obtained hollow carbon spheres@MoSxSe2−x MCNCs displayed the extraordinary comprehensive EMWAPs because of the introduced abundant defects and excellent interfacial effects. Furthermore, the as-prepared hollow carbon spheres@MoSxSe2−x MCNCs presented the progressively improved comprehensive EMWAPs with the x value increasing from 0.2 to 1.0, which could be explained by their boosted polarization loss abilities and impedance matching characteristics originating from the enhanced sulfur vacancy concentration. Therefore, our findings not only demonstrated that the anion regulating was a promising method to optimize EM parameters and EMWAPs, but also provided a facile route to design the transition metal dichalcogenides-based MCNCs as the much more attractive candidates for high-performance microwave absorbers.

Keywords

anion regulatingcore@shell structurehollow carbon spheres@MoSxSe2−xinterface and defect engineeringmicrowave absorption

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Nano Research
Volume 16 Issue 4,
April 2023
Pages 5756-5766
DOI: 10.1007/s12274-023-5433-4
Cite this article:
Xiao J, Qi X, Wang L, et al. Anion regulating endows core@shell structured hollow carbon spheres@MoSxSe2−x with tunable and boosted microwave absorption performance. Nano Research, 2023, 16(4): 5756-5766. https://doi.org/10.1007/s12274-023-5433-4
Topics:
Amorphous carbon MorphologyNanocapsules Nanocomposites
Part of a topical collection:
EM Wave Functional Materials

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Received: 27 November 2022
Revised: 17 December 2022
Accepted: 20 December 2022
Published: 21 January 2023
© Tsinghua University Press 2023
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