Enhancement of microwave absorption bandwidth of MXene nanocomposites through macroscopic design. Issue 8 (5th August 2020)

• Record Type: Journal Article
• Authors: Bora, Pritom J.; Suresh Kumar, T. R.; Tan, Daniel Q.
• Is Part Of: Royal Society open science. Volume 7:Issue 8(2020)
• Publication Date: 2020-08-05
• Subjects: MXene -- MXene nanocomposites -- reflection loss -- macroscopic design; Science -- Periodicals; 500
• DOI: 10.1098/rsos.200456
• Languages: English
• ISSNs: 2054-5703

Abstract

Abstract : 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 -Ti3 C2 Tx MXene and Fe3 O4 @TiO2 -Ti3 C2 Tx 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 Fe3 O4 @TiO2 -Ti3 C2 Tx hybrid exhibits two specific absorption bandwidths (minimum RL value - −47 dB). Compared with other two-dimensional nanocomposites such as graphene or Fe3 O4 -graphene, MXene hybrid-matrix materials show better microwave absorption bandwidth in macroscopic pattern.