Journal
CHEMICAL ENGINEERING JOURNAL
Volume 431, Issue -, Pages -Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.cej.2021.133919
Keywords
Ti3C2T x MXene; Multilayer laminate structure; Magnetic loss; Electromagnetic wave absorption; NiCo/TiC/TiO/CNTs composites
Categories
Funding
- National Natural Science Foundation of China [51407134]
- Natural Science Foundation of Shandong Province [ZR2019YQ24]
- Shandong Taishan Scholars Young Expert Program
- China Postdoctoral Science Foundation [2016M590619]
- Qingchuang Talents Induction Program of Shandong Higher Education Institution (Research and Innovation Team of Structural-Functional Polymer Composites)
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The widespread use of communication equipment has led to the deterioration of the electromagnetic environment, necessitating the development of more efficient electromagnetic wave absorption materials. By modifying Ti3C2Tx MXene composites with magnetic NiCo/Carbon nanotubes (CNTs), the absorption of electromagnetic waves is achieved.
The widespread use of communication equipment has exacerbated the deterioration of the electromagnetic environment, urgently requiring the development of more efficient electromagnetic wave (EMW) absorption materials. Two-dimensional metal carbides are highly regarded for their characteristic structure and excellent electrical conductivity. Here, to break the single way of designing Ti3C2Tx MXene composites and to compensate for their lack of magnetic loss capability, an attempt was made to prepare composites with magnetic NiCo/Carbon nanotubes (CNTs) modification to achieve EMW absorption. Such CNTs-encapsulated Ni and Co metal particles anchored in the matrix, coupled with a multilayer laminate structure, enable the composite to have enhanced EMW absorption. Remarkably, the NiCo/TiC/TiO/CNTs composites exhibit excellent EMW absorption performance at a filling level of only 14.2 wt%. The minimum reflection loss (RL) of-51.98 dB and the maximum effective absorption bandwidth of 7.76 GHz were obtained at thicknesses of 1.9 mm and 2.1 mm, respectively. In addition to this, the possible mechanisms involved in EMW absorption have been elucidated in detail. These results demonstrate an environmentally friendly and simple strategy for the preparation of EMW absorbers based on Ti3C2Tx MXene substrate.
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