Design of Ti 3 C 2 T x /TiO 2 /PANI multi-layer composites for excellent electromagnetic wave absorption performance.

Autor: Gao X; Institute of Materials for Energy and Environment, State Key Laboratory of Bio-fibers and Eco-textiles, College of Materials Science and Engineering, Qingdao University, Qingdao 266071, PR China., Wang B; Institute of Materials for Energy and Environment, State Key Laboratory of Bio-fibers and Eco-textiles, College of Materials Science and Engineering, Qingdao University, Qingdao 266071, PR China., Wang K; Institute of Materials for Energy and Environment, State Key Laboratory of Bio-fibers and Eco-textiles, College of Materials Science and Engineering, Qingdao University, Qingdao 266071, PR China., Xu S; Institute of Materials for Energy and Environment, State Key Laboratory of Bio-fibers and Eco-textiles, College of Materials Science and Engineering, Qingdao University, Qingdao 266071, PR China., Liu S; Institute of Materials for Energy and Environment, State Key Laboratory of Bio-fibers and Eco-textiles, College of Materials Science and Engineering, Qingdao University, Qingdao 266071, PR China., Liu X; Institute of Materials for Energy and Environment, State Key Laboratory of Bio-fibers and Eco-textiles, College of Materials Science and Engineering, Qingdao University, Qingdao 266071, PR China., Jia Z; Institute of Materials for Energy and Environment, State Key Laboratory of Bio-fibers and Eco-textiles, College of Materials Science and Engineering, Qingdao University, Qingdao 266071, PR China. Electronic address: jiazirui@mail.nwpu.edu.cn., Wu G; Institute of Materials for Energy and Environment, State Key Laboratory of Bio-fibers and Eco-textiles, College of Materials Science and Engineering, Qingdao University, Qingdao 266071, PR China. Electronic address: wuguanglei@qdu.edu.cn.
Jazyk: angličtina
Zdroj: Journal of colloid and interface science [J Colloid Interface Sci] 2021 Feb 01; Vol. 583, pp. 510-521. Date of Electronic Publication: 2020 Sep 28.
DOI: 10.1016/j.jcis.2020.09.094
Abstrakt: Ti 3 C 2 T x MXene is an excellent electromagnetic wave (EMW) absorber with excellent electrical conductivity and abundant surface functional groups. In this research, Ti 3 C 2 T x /TiO 2 /PANI multi-layer composites were successfully synthesized by HCl and LiF etching, one-step hydrothermal method and in-situ polymerization. Ti 3 C 2 T x can provide more electron transfer paths due to its unique multilayer structure and high specific surface area. The growth of TiO 2 particles on the surface of Ti 3 C 2 T x through hydrothermal reaction enhances the interface polarization, and then polyaniline (PANI) is doped on the surface of Ti 3 C 2 T x where TiO 2 particles are grown by in-situ polymerization. Due to the excellent dielectric properties and synergistic effects of the material itself, Ti 3 C 2 T x /TiO 2 /PANI composites have excellent EMW absorption property. In this study, the Ti 3 C 2 T x /TiO 2 /PANI composites showed the strong reflection loss (RL) of at 13.92 GHz, which was -65.61 dB, and the thickness was only 2.18 mm. Moreover, the composites also exhibit a wide absorption band, with an effective absorption bandwidth (RL < -10 dB) of 5.92 GHz (11.84 GHz to 17.76 GHz) at 2.10 mm. The results show that the Ti 3 C 2 T x /TiO 2 /PANI composites are expected to become EMW absorber with thin thickness and high absorption strength.
Competing Interests: Declaration of Competing Interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
(Copyright © 2020 Elsevier Inc. All rights reserved.)
Databáze: MEDLINE
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