Journal
APPLIED SURFACE SCIENCE
Volume 528, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.apsusc.2020.147052
Keywords
WS2-NS/CNTs hybrids; 3D mesh conduction; Electromagnetic wave absorption; Synergistic effect
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Funding
- National Natural Science Foundation of China [51772160, 51977009]
- National Key R&D Program of China [2016YFE0204200]
- Foshan Xianhu Laboratory of the Advanced Energy Science and Technology Guangdong Laboratory
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Herein, ultra-thin tungsten disulfide nanosheets/carbon nanotubes (WS2-NS/CNTs) hybrids were successfully synthesized by using a one-step hydrothermal method. The WS2-NS is evenly grown on the surfaces of CNTs, leading to a remarkable three-dimensional (3D) heterostructure. Outstanding electromagnetic wave absorption performance of the WS2-NS/CNTs hybrids can be achieved by tuning the amount of CNTs. The minimum reflection loss can reach up to -51.6 dB at 14.8 GHz, and the effective absorption bandwidth is 5.4 GHz for the hybrids with a thickness of 1.95 mm. Comparison of the results with those of simple mixtures of WS2-NS and CNTs prepared by using ultrasonic methods indicates that the absorption performance of the optimized WS2-NS/CNTs hybrids are closely related to that of the 3D mesh conducive network constructed by the addition of CNTs and the synergistic effect of WS2-NS and CNTs in the hybrids. These WS2-NS/CNTs hybrids open a new avenue for the development of electromagnetic wave absorbers with extraordinary absorption performance, light weight, small thickness, broad absorption bandwidth, and low cost.
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