Abstract

In order to prevent the microwave leakage and mutual interference, more and more microwave absorbing devices are added into the design of electronic products to ensure its routine operation. In this work, we have successfully prepared MoS2/TiO2/Ti3C2Tx hierarchical composites by one-pot hydrothermal method and focused on the relationship between structures and electromagnetic absorbing properties. Supported by comprehensive characterizations, MoS2 nanosheets were proved to be anchored on the surface and interlayer of Ti3C2Tx through a hydrothermal process. Additionally, TiO2 nanoparticles were obtained in situ. Due to these hierarchical structures, the MoS2/TiO2/Ti3C2Tx composites showed greatly enhanced microwave absorbing performance. The MoS2/TiO2/Ti3C2Tx composites exhibit a maximum reflection loss value of −33.5 dB at 10.24 GHz and the effective absorption bandwidth covers 3.1 GHz (13.9–17 GHz) at the thickness of 1.0 mm, implying the features of wide frequency and light weight. This work in the hierarchical structure of MoS2/TiO2/Ti3C2Tx composites opens a promising door to the exploration of constructing extraordinary electromagnetic wave absorbents.

Highlights

  • Electronic products are developing toward the direction of high power and high frequency, but there is a major problem for these electronic products that they come with leakage and mutual interference of microwaves [1]

  • The electromagnetic wave absorption performance of the MoS2 and MoS2/TiO2/Ti3C2Tx composites was investigated over 2–18 GHz and the reflection loss (RL) are calculated by the following equations [36]: RL 20 log (Zin Z0 ) (Zin Z0 )

  • MoS2/TiO2/Ti3C2Tx composites were successfully prepared by a simple hydrothermal method

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Summary

Introduction

Electronic products are developing toward the direction of high power and high frequency, but there is a major problem for these electronic products that they come with leakage and mutual interference of microwaves [1]. We have successfully prepared MoS2/TiO2/ Ti3C2Tx hierarchical composites by one-pot hydrothermal method and focused on the relationship between structures and electromagnetic wave absorbing properties. MoS2 nanosheets were proved to be anchored vertically on the surface and interlayer of Ti3C2Tx through a hydrothermal process and in situ generated TiO2 nanoparticles were obtained simultaneously. Due to these hierarchical structures, the MoS2/TiO2/Ti3C2Tx composites showed greatly enhanced microwave absorbing performance

Experimental
Results and discussion
Conclusions

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