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Vol. 12 (2020)

Sandwich-Like Fe&TiO2@C Nanocomposites Derived from MXene/Fe-MOFs Hybrids for Electromagnetic Absorption

https://doi.org/10.1007/s40820-020-0398-2
Baiwen Deng
Shanghai Key Lab. of D&A for Metal‑Functional Materials, School of Materials Science & Engineering, Tongji University, Shanghai 201804, People’s Republic of China
Zhen Xiang
Shanghai Key Lab. of D&A for Metal‑Functional Materials, School of Materials Science & Engineering, Tongji University, Shanghai 201804, People’s Republic of China
Juan Xiong
Shanghai Key Lab. of D&A for Metal‑Functional Materials, School of Materials Science & Engineering, Tongji University, Shanghai 201804, People’s Republic of China
Zhicheng Liu
Shanghai Key Lab. of D&A for Metal‑Functional Materials, School of Materials Science & Engineering, Tongji University, Shanghai 201804, People’s Republic of China
Lunzhou Yu
School of Materials Science & Engineering, University of Shanghai for Science and Technology, Shanghai 200092, People’s Republic of China
Wei Lu
Shanghai Key Lab. of D&A for Metal‑Functional Materials, School of Materials Science & Engineering, Tongji University, Shanghai 201804, People’s Republic of China

Corresponding Author: Wei Lu

weilu@tongji.edu.cn

Nano-Micro Letters, Vol. 12 (2020), Article Number: 55

Abstract

Electromagnetic pollution has been causing a series of problems in people’s life, and electromagnetic absorbers with lightweight and broad absorbing bandwidth properties are widely desired. In this work, novel sandwich-like 2D laminated Fe&TiO2 nanoparticles@C nanocomposites were rationally designed and successfully developed from the MXene–MOFs hybrids. The formation of Fe and rutile-TiO2 nanoparticles sandwiched by the two-dimensional carbon nanosheets provided strong electromagnetic energy attenuation and good impedance matching for electromagnetic wave (EMW) absorption. As expected, the nanocomposites achieved a broad effective absorption bandwidth of 6.5 GHz at a thickness of only 1.6 mm and the minimum reflection loss (RL) value of − 51.8 dB at 6.6 GHz with a thickness of 3 mm. This work not only provides a good design and fabricating concept for the laminated metal and functional nanoparticles@C nanocomposites with good EMW absorption, but also offers an important guideline to fabricate various two-dimensional nanocomposites derived from the MXene precursors.


Highlights:


1 Sandwich-like laminated Fe&TiO2@C nanocomposites were successfully prepared from the MXene–MOFs hybrids.
2 A broad effective bandwidth of 6.5 GHz at a thickness of only 1.6 mm was achieved.

Keywords

MXene Metal–organic frameworks Nanocomposites Electromagnetic wave absorption
Deng, Baiwen, Zhen Xiang, Juan Xiong, Zhicheng Liu, Lunzhou Yu, and Wei Lu. 2020. “Sandwich-Like Fe&TiO2@C Nanocomposites Derived from MXene/Fe-MOFs Hybrids for Electromagnetic Absorption”. Nano-Micro Letters 12 (February):55. https://doi.org/10.1007/s40820-020-0398-2.
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