Two-Dimensional Nanosheets of Titanium Carbonitride Ti3CNT xMXene for Microwave Absorption in the X and Ku Bands

Xu，Weimin1; Li，Shibo1; Wu，Ying2; Zhang，Weiwei1; Yu，Wenbo1; Zhou，Yang1; Fan，Shukai3; Bei，Guoping3; Ding，Sun An2

2022

10.1021/acsanm.2c04062

ACS Applied Nano Materials   影响因子和分区

2574-0970

New types of microwave absorption (MA) materials are urgently demanded in military radars and communication satellites working in the frequency of 8-12 GHz (X band) and 12-18 GHz (Ku band). However, it remains a challenge to make a material completely satisfy the MA requirements in the whole frequency bands. Here, two-dimensional (2D) Ti3CNTx nanolayered flakes were produced by HF etching of the Ti3AlCN precursor and exhibited an attractive MA performance in the X and Ku bands. The minimum reflection loss (RL) of Ti3CNTx was -41.36 dB at 11.76 GHz with a sample thickness of 1.94 mm. Meanwhile, an effective absorption band (EAB) of 4.24 GHz (in the frequency range 13.76-18 GHz) was achieved when the sample thickness was 1.5 mm. Spin-polarized density functional theory calculations confirmed that Ti3CNTx possesses magnetic moments. The magnetic moments mainly originate from the severe asymmetric spin of electrons of Ti atoms located between N and functional groups induced by the unpaired electrons of N atoms. The synergetic effects of dielectric loss and magnetic loss mechanisms contribute to the MA performance of Ti3CNTx. 2D nanosheets of Ti3CNTx are a promising candidate for MA applications.

magnetic property mechanism microwave absorption nanosheets Ti3CNT xMXene

SCI

英语

其他

[52275171] ; [80923010304]

Science & Technology - Other Topics ; Materials Science

Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary

WOS:000877336800001

AMER CHEMICAL SOC

2-s2.0-85140875763

Scopus

1.Center of Materials Science and Engineering,School of Mechanical and Electronic Control Engineering,Beijing Jiaotong University,Beijing,100044,China
2.School of Microelectronics,Southern University of Science and Technology,Shenzhen,518055,China
3.China Porcelain Fuchi (Suzhou) High Tech Nano Materials Co. Ltd.,Suzhou,215100,China

Xu，Weimin,Li，Shibo,Wu，Ying,et al. Two-Dimensional Nanosheets of Titanium Carbonitride Ti3CNT xMXene for Microwave Absorption in the X and Ku Bands[J]. ACS Applied Nano Materials,2022.

Xu，Weimin.,Li，Shibo.,Wu，Ying.,Zhang，Weiwei.,Yu，Wenbo.,...&Ding，Sun An.(2022).Two-Dimensional Nanosheets of Titanium Carbonitride Ti3CNT xMXene for Microwave Absorption in the X and Ku Bands.ACS Applied Nano Materials.

Xu，Weimin,et al."Two-Dimensional Nanosheets of Titanium Carbonitride Ti3CNT xMXene for Microwave Absorption in the X and Ku Bands".ACS Applied Nano Materials (2022).