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  • Title: Implantation of WSe2 nanosheets into multi-walled carbon nanotubes for enhanced microwave absorption.
    Author: Han Y, Yuan J, Zhu Y, Wang Q, Li L, Cao M.
    Journal: J Colloid Interface Sci; 2022 Mar; 609():746-754. PubMed ID: 34839924.
    Abstract:
    Microwave absorption materials can protect humanity from harmful electromagnetic radiation, but it is still a challenge to absorb electromagnetic radiation with different bands simultaneously. Herein, an effective strategy for obtaining WSe2@CNTs nanohybrids is reported. The conductive network and polarization of WSe2@CNTs nanohybrids can be tailored by confinedly implanting WSe2 nanosheets on multi-walled carbon nanotubes. The electromagnetic properties and microwave absorption performance of the nanohybrids are effectively adjusted via changing the hybrid ratio of WSe2 and CNTs. Multi-band microwave absorption is achieved with up to three bands. The reflection loss (RL) of the sample can reach -60.1 dB, and the bandwidth can reach 4.24 GHz (RL ≤ -10 dB). The excellent microwave absorption performance is attributed to the conductance and multiple relaxations, as well as the synergistic effect of the two. This result confirms that WSe2@CNTs nanohybrids are potential candidates for high-efficiency microwave absorbers and provide a valuable pathway for designing high-performance microwave absorption materials in the future.
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