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Broadband electromagnetic absorption of Ti 3 C 2 T x MXene/WS 2 composite via constructing two‐dimensional heterostructure
Author(s) -
Ren Hengdong,
Wang Sheng,
Zhang Ximing,
Liu Yin,
Kong Lingbing,
Li Chang,
Lu Xiaoyong,
Chen Yonghong
Publication year - 2021
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/jace.17959
Subject(s) - heterojunction , materials science , reflection loss , composite number , ceramic , absorption (acoustics) , x ray photoelectron spectroscopy , dielectric , transmission electron microscopy , scanning electron microscope , analytical chemistry (journal) , optoelectronics , composite material , nanotechnology , chemistry , nuclear magnetic resonance , physics , chromatography
Ti 3 C 2 T x MXene, an emerging two‐dimensional (2D) ceramic material, has rich interfaces and strong conductive networks. Herein, we have successfully built a heterostructure between Ti 3 C 2 T x MXene and WS 2 to improve electromagnetic absorption performance. X‐ray diffraction and X‐ray photoelectron spectroscopy were used to determine the successful synthesis of Ti 3 C 2 T x /WS 2 composite. Field emission scanning electron microscopy and transmission electron microscopy images show that WS 2 nanosheets are evenly dispersed on the accordion‐like Ti 3 C 2 T x MXene. Importantly, Ti 3 C 2 T x MXene/WS 2 composite has sufficiently high dielectric loss and impedance matching due to self‐adjusting conductivity and 2D heterostructure interfaces. As a result, the Ti 3 C 2 T x /WS 2 composite has a minimum reflection loss (RL min ) of −61.06 dB at 13.28 GHz. Besides, it has a broad effective absorption bandwidth (EAB) of 6.5 GHz, with EAB >5.0 GHz covering a wide range of thickness. Such impressive results may provide experience for the application of Ti 3 C 2 T x ceramics and 2D materials.