Zhang Junying, Xue Wei, Chen Xin-Yu
College of Mathematics and Physics, Beijing University of Chemical Technology, Beijing 100029, People's Republic of China.
Nanotechnology. 2020 Apr 17;31(27):275301. doi: 10.1088/1361-6528/ab80fd. Epub 2020 Mar 18.
Atomically multilayered two-dimensional transition-metal carbides have abundant interfaces, and are very promising as outstanding electromagnetic absorbing materials at thin thickness. Here, a TiCT MXene was prepared by hydrofluoric acid etching method, and has typical multilayered morphology with stacks of nanosheets. The microwave dielectric behaviours of the TiCT with efficient microwave absorption were investigated. The TiCT presents good impedance matching, achieved with effective absorption bandwidth covering from 12.4 GHz to 17.1 GHz, with thickness of only 1.5 mm, which nearly covers the whole Ku band. The microwave absorption performance was adjusted, and the TiCT has a minimum reflection loss of -34.4 dB at 12 GHz at only 1.7 mm. This study demonstrates the real potential of TiCT MXene materials as electromagnetic wave thin broadband absorbers.
原子级多层二维过渡金属碳化物具有丰富的界面，作为薄厚度下出色的电磁吸收材料非常有前景。在此，通过氢氟酸蚀刻法制备了TiCT MXene，其具有由纳米片堆叠而成的典型多层形态。研究了具有高效微波吸收性能的TiCT的微波介电行为。TiCT呈现出良好的阻抗匹配，有效吸收带宽覆盖12.4 GHz至17.1 GHz，厚度仅为1.5 mm，几乎覆盖了整个Ku波段。对微波吸收性能进行了调整，TiCT在1.7 mm厚度时于12 GHz处具有-34.4 dB的最小反射损耗。本研究证明了TiCT MXene材料作为电磁波薄宽带吸收体的实际潜力。
