Enhanced electromagnetic wave absorption based on Ti3C2Tx loaded nickel nanoparticles via polydopamine connection

Zha, Liang-Liang; Zhang, Xian-Hui; Wu, Jianglai; Liu, Jun–Jun; Lan, Jianfeng; Yang, Yang; Wu, Bo

doi:10.1016/j.ceramint.2023.03.198

Cited by 7 publications

(2 citation statements)

References 53 publications

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“…The CNT-modified Ni 2 P−Cu 3 P MAMs were compared with similar materials previously reported. ,,,− Figure a compares metrics such as filling rate and absorption bandwidth with those of microporous absorber materials. Figure b illustrates a comparison of the maximum incidence angles for TE and TM modes with materials demonstrating wide-angle absorption properties, along with their corresponding key parameters of filling rate and thickness.…”

Section: Results Analysismentioning

confidence: 99%

Ni₂P−Cu₃P/CNTs Nanocomposites with Porous Structures for Broadband and Wide-Angle Microwave Absorption

He,

Liu,

et al. 2024

ACS Appl. Nano Mater.

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Designing dielectric absorber materials with wideband absorption, wide-angle performance, and lightweight characteristics remains a significant challenge. Inspired by the porous structure of volcanic rock, this study employed a simple one-step hydrothermal method and bubble assistance to synthesize micro/mesoporous Ni 2 P−Cu 3 P binary nanophosphides, which were then enhanced with CNTs to create a three-dimensional mesh structure. The porous structure of the Ni 2 P−Cu 3 P nanocomposite not only facilitates the formation of rich heterogeneous interfaces on the material surface, inducing lattice defects but also enhances interface polarization due to the uneven surface charge distribution of the pore structure. As a result, at a filling rate of only 10%, Ni 2 P−Cu 3 P/CNTs achieved an effective absorption bandwidth of 6.6 GHz with a thickness of 2.4 mm. Furthermore, this nanocomposite exhibited outstanding absorption performance within a wide oblique incidence range of 0−67°for transverse electrical (TE) mode and 0−75°for transverse magnetic (TM) mode. Notably, at reflection loss levels of −5 and −10 dB, the maximum effective oblique incidence angles reached 80°and 67°for TE and TM modes, respectively. These studies underscore the exceptional wide-angle and broadband absorption capabilities of Ni 2 P−Cu 3 P/CNTs nanocomposite materials even at extremely low filling rates, making them highly suitable for designing lightweight, broadband, and polarization-insensitive absorbers.

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Section: Results Analysismentioning

confidence: 99%

Ni₂P−Cu₃P/CNTs Nanocomposites with Porous Structures for Broadband and Wide-Angle Microwave Absorption

He,

Liu,

et al. 2024

ACS Appl. Nano Mater.

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“…极极化 [43] . Ti 2p精细谱在458.69 eV, 464.29 eV, 454.96 eV, 457.04 eV, 460.88 eV和471.68 eV处的 [44,45] . C 1s能谱可以…”

Section: 雷达截面(Rcs)模拟unclassified

Enhanced microwave absorption performance of large-sized monolayer two-dimensional Ti3C2Tx based on loaded Fe3O4 nanoparticles

Xiao,

He,

Chen

et al. 2023

Acta Phys. Sin.

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With the rapid updating and development of electronic equipment, electromagnetic interference and electromagnetic radiation pollution have became serious problems, because that excessive electromagnetic interference will not only affect normal operation of electronic equipment but also cause great harm to human health. In general, an ideal material for microwave absorption with the characteristics of high reflection loss (RL) intensity, wide effective absorption band (EAB), thin thickness, and lightweight could effectively consume electromagnetic wave (EMW) energy. Therefore, it is crucial to search for such an ideal microwave absorption material to deal with the electromagnetic radiation pollution. Two-dimensional (2D) carbon/nitride MXene has received more and more attention in recent years, because excellent electrical conductivity and rich surface-functional groups in MXene show positive effects on electromagnetic wave absorption. However, as a non-magnetic material with only dielectric loss, MXene exists obvious impedance mismatch, which greatly limits its practical applications. Combining MXene with magnetic materials becomes a hotspot for exploration of ideal microwave absorption materials. As a typical ferrite, Fe3O4 shows excellent soft magnetic properties such as high saturation magnetization, high chemical stability, simple preparation, and so on. In this paper, the 2D Fe3O4@Ti3C2Tx composite was successfully prepared by hydrothermal method and simple electrostatic adsorption process. Fe3O4 nanoparticles were uniformly anchored on the surface of large-sized monolayer Ti3C2Tx, which effectively reduced the stacking of MXene. By regulating the proportion of magnetic materials, the microwave absorption performance of 2D Fe3O4@Ti3C2Tx composite was investigated. With increasing the content of Fe3O4 nanoparticles in the 2D Fe3O4@Ti3C2Tx composite from 4 mg to 8 mg, the microwave absorption performance was enhanced obviously. This is caused by the abundant Fe3O4/Ti3C2Tx interfaces, scattering channels, point defect, charge density difference in 2D Fe3O4@Ti3C2Tx composite, and the optimized impedance matching. The minimum reflection loss (RLmin) of 2D Fe3O4@Ti3C2Tx composite reached -69.31 dB with the frequency of 16.19 GHz, and the effective absorption band (EAB) achieved 3.39 GHz. With further increasing the content of Fe3O4 nanoparticles to 10 mg, the microwave absorption performance showed a decreasing trend. Excessive Fe3O4 nanoparticles in the 2D Fe3O4@Ti3C2Tx composite induced the over decreasing of conductivity and thus the impedance dis-matching and decreasing of dielectric loss, which lead to the decrease of microwave absorption performance. Radar scattering cross section (RCS) is a physical quantity that evaluates the intensity of the scattered echo energy in the intercepted electromagnetic wave energy. The results of the RCS simulation can be applied to real objects which have been widely applied in radar wave stealth. Its multi-angle simulation results can be used as an important basis for evaluating the stealth capability of microwave-absorbing materials. The RCS simulations show that the average RCS value of 2D Fe3O4@Ti3C2Tx composite was over -47.92 dB m2 at the incidence angle of 25°, demonstrating its excellent radar wave absorption performance. This study provides new ideas for the improvement and practical application of two-dimensional and magnetic materials in the microwave absorption field and provides a new path for the subsequent development of microwave-absorbing composites.

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The core-shell structure of nitrogen-doped carbon coated Fe3O4 decorated MXene for broadband and efficient microwave absorption

Zha,

Wei,

Liu

et al. 2024

Ceramics International

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Enhanced electromagnetic wave absorption based on Ti3C2Tx loaded nickel nanoparticles via polydopamine connection

Cited by 7 publications

References 53 publications

Ni₂P−Cu₃P/CNTs Nanocomposites with Porous Structures for Broadband and Wide-Angle Microwave Absorption

Ni₂P−Cu₃P/CNTs Nanocomposites with Porous Structures for Broadband and Wide-Angle Microwave Absorption

Enhanced microwave absorption performance of large-sized monolayer two-dimensional Ti<sub>3</sub>C<sub>2</sub>T<sub><i>x</i></sub> based on loaded Fe<sub>3</sub>O<sub>4</sub> nanoparticles

The core-shell structure of nitrogen-doped carbon coated Fe3O4 decorated MXene for broadband and efficient microwave absorption

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Enhanced electromagnetic wave absorption based on Ti3C2Tx loaded nickel nanoparticles via polydopamine connection

Cited by 7 publications

References 53 publications

Ni2P−Cu3P/CNTs Nanocomposites with Porous Structures for Broadband and Wide-Angle Microwave Absorption

Ni2P−Cu3P/CNTs Nanocomposites with Porous Structures for Broadband and Wide-Angle Microwave Absorption

Enhanced microwave absorption performance of large-sized monolayer two-dimensional Ti<sub>3</sub>C<sub>2</sub>T<sub><i>x</i></sub> based on loaded Fe<sub>3</sub>O<sub>4</sub> nanoparticles

The core-shell structure of nitrogen-doped carbon coated Fe3O4 decorated MXene for broadband and efficient microwave absorption

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Ni₂P−Cu₃P/CNTs Nanocomposites with Porous Structures for Broadband and Wide-Angle Microwave Absorption

Ni₂P−Cu₃P/CNTs Nanocomposites with Porous Structures for Broadband and Wide-Angle Microwave Absorption