Journal
ROYAL SOCIETY OPEN SCIENCE
Volume 7, Issue 8, Pages -Publisher
ROYAL SOC
DOI: 10.1098/rsos.200456
Keywords
MXene; MXene nanocomposites; reflection loss; macroscopic design
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Funding
- Guangdong Basic and Applied Basic Research Foundation [2019A1515012056]
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MXene, the new family of two-dimensional 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 less than or equal to -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, the optimized Fe3O4@TiO2-Ti3C2Tx hybrid exhibits two specific absorption bandwidths (minimum RL value - -47 dB). Compared with other two-dimensional nanocomposites such as graphene or Fe3O4-graphene, MXene hybrid-matrix materials show better microwave absorption bandwidth in macroscopic pattern.
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