Customizing coaxial stacking VS2nanosheets for dual-band microwave absorption with superior performance in the C- And Ku-bands

Deqing Zhang, Huibin Zhang, Junye Cheng, Hassan Raza, Tingting Liu, Bin Liu, Xuewei Ba, Guangping Zheng, Guohua Chen, Maosheng Cao

Research output: Journal article publicationJournal articleAcademic researchpeer-review

18 Citations (Scopus)

Abstract

Engineering microwave absorption materials with absorption in multiple bands and strong absorption performance in the C-band remains challenging to date. Herein, coaxial stacking VS2nanosheets (CSVNs) were customizedviaa facile one-step hydrothermal route for the first time and their microwave absorption (MA) properties were systematically investigated. The complex permittivity and conductivity of CSVNs could be tuned by regulating the hydrothermal reduction temperature. When the reaction temperature was 190 °C, the VS2nanosheets exhibited unique dual-band absorption characteristics in the C-band and Ku-band. A minimum reflection loss value of -57 dB and an average absorption intensity exceeding 15 dB in both the C (4-8 GHz) and Ku(12-18 GHz) bands were obtained. For the optimized CSVNs, the qualified bandwidth with reflection loss less than -10 dB reached up to 7 GHz, which almost covered the whole measured range of the C- and Ku-bands. Notably, this desirable microwave absorption performance, which probably results from the good conductivity of the 1T-phase CSVNs in the 2H phase, the well-matched impedance and the multiple reflections induced by their distinctive stacking structure, demonstrates that CSVNs are potential outstanding absorbers. More importantly, this study provides an effective strategy to tune the microwave performance of CSVNs by tailoring their structures.

Original languageEnglish
Pages (from-to)5923-5933
Number of pages11
JournalJournal of Materials Chemistry C
Volume8
Issue number17
DOIs
Publication statusPublished - 7 May 2020

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Chemistry

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