Published September 28, 2020 | Version v1
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Enhancement of microwave absorption bandwidth of MXene nanocomposites through macroscopic design

  • 1. Guangdong Technion-Israel Institute of Technology
  • 2. Indian Institute of Science*

Description

MXene, the new family of 2D materials having numerous nanoscale layers, is being considered as a novel microwave absorption material.  However, MXene/functionalized MXene loaded polymer nanocomposites exhibit narrow reflection loss (RL) bandwidth (RL ≤ -10 dB).  In order to enhance the microwave absorption bandwidth of MXene hybrid-matrix materials, for the first time, macroscopic design approach is carried out for TiO2-Ti3C2Tx MXene and Fe3O4@TiO2-Ti3C2Tx MXene hybrids through simulation.  The simulated results indicate that use of pyramidal meta structure of MXene can significantly tune the RL bandwidth.  For optimized MXene hybrid-matrix materials pyramid pattern, the bandwidth enhances to 3-18 GHz.  Experimental RL value well matched with the simulated RL.  On the other hand, for optimized Fe3O4@TiO2-Ti3C2Tx hybrid exhibits two specific absorption bandwidths viz. 3-18 GHz (minimum RL value - 47 dB).  Compared to other 2D nanocomposites such as graphene or Fe3O4-graphene, MXene hybrid-matrix materials shows better microwave absorption bandwidth in macroscopic pattern. 

Notes

Funding provided by: Guangdong Basic and Applied Basic Research Foundation *
Crossref Funder Registry ID:
Award Number: 2019A1515012056

Funding provided by: Guangdong Basic and Applied Basic Research Foundation
Crossref Funder Registry ID: http://dx.doi.org/None
Award Number: 2019A1515012056

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