Broadband electromagnetic absorption of Ti3C2Tx MXene/WS2 composite via constructing two-dimensional heterostructure |
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| Authors: | Hengdong Ren Sheng Wang Ximing Zhang Yin Liu Lingbing Kong Chang Li Xiaoyong Lu Yonghong Chen |
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| Affiliation: | 1. School of Materials Science and Engineering, Anhui University of Science and Technology, Huainan, China;2. College of New Materials and New Energies, Shenzhen Technology University, Shenzhen, China;3. Anhui Key Laboratory of Low Temperature Co-fired Materials, Huainan Normal University, Huainan, China |
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| Abstract: | Ti3C2Tx MXene, an emerging two-dimensional (2D) ceramic material, has rich interfaces and strong conductive networks. Herein, we have successfully built a heterostructure between Ti3C2Tx MXene and WS2 to improve electromagnetic absorption performance. X-ray diffraction and X-ray photoelectron spectroscopy were used to determine the successful synthesis of Ti3C2Tx/WS2 composite. Field emission scanning electron microscopy and transmission electron microscopy images show that WS2 nanosheets are evenly dispersed on the accordion-like Ti3C2Tx MXene. Importantly, Ti3C2Tx MXene/WS2 composite has sufficiently high dielectric loss and impedance matching due to self-adjusting conductivity and 2D heterostructure interfaces. As a result, the Ti3C2Tx/WS2 composite has a minimum reflection loss (RLmin) 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 Ti3C2Tx ceramics and 2D materials. |
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| Keywords: | electrical conductivity electrical properties electromagnetic absorption microwaves Ti3C2Tx MXene two-dimensional materials WS2 nanoflowers |
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