Rational construction of hierarchical accordion-like Ni@porous carbon nanocomposites derived from metal-organic frameworks with enhanced microwave absorption

Xiang, Zhen; Huang, Chuang; Song, Yiming; Deng, Baiwen; Xiang, Zhang; Zhu, Xiaojie; Batalu, Dan; Tutunaru, Oana; Lü, Wei

doi:10.1016/j.carbon.2020.06.015

Cited by 178 publications

(44 citation statements)

References 94 publications

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“…Examples included hollow structures [32][33][34][35], porous structures [36,37,2], and layer structures [38,39]. The laminated porous structure gives the material the advantages of a lightweight, abundant interfacial polarization, and multiple scattering and reflection, which can attenuate more electromagnetic wave energy [40][41][42]. However, there were few reports on the laminated porous structure with the combination of 0D magnetic nanoparticles, 1D CNTs, and 2D MXene for the high-efficiency electromagnetic wave absorption and EMI shielding.…”

Section: Introductionmentioning

confidence: 99%

Flexible and Waterproof 2D/1D/0D Construction of MXene-Based Nanocomposites for Electromagnetic Wave Absorption, EMI Shielding, and Photothermal Conversion

et al. 2021

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The 2D/1D/0D Ti 3 C 2 T x /carbon nanotubes/Co nanocomposite is successfully synthesized via an electrostatic assembly.Nanocomposites exhibit an excellent electromagnetic wave absorption and a remarkable electromagnetic interference shielding efficiency.The flexible, waterproof, and photothermal conversion performances are achieved.ABSTRACT High-performance electromagnetic wave absorption and electromagnetic interference (EMI) shielding materials with multifunctional characters have attracted extensive scientific and technological interest, but they remain a huge challenge. Here, we reported an electrostatic assembly approach for fabricating 2D/1D/0D construction of Ti 3 C 2 T x /carbon nanotubes/Co nanoparticles (Ti 3 C 2 T x /CNTs/Co) nanocomposites with an excellent electromagnetic wave absorption, EMI shielding efficiency, flexibility, hydrophobicity, and photothermal conversion performance. As expected, a strong reflection loss of -85.8 dB and an ultrathin thickness of 1.4 mm were achieved. Meanwhile, the high EMI shielding efficiency reached 110.1 dB. The excellent electromagnetic wave absorption and shielding performances were originated from the charge carriers, electric/magnetic dipole polarization, interfacial polarization, natural resonance, and multiple internal reflections. Moreover, a thin layer of polydimethylsiloxane rendered the hydrophilic hierarchical Ti 3 C 2 T x /CNTs/Co hydrophobic, which can prevent the degradation/oxidation of the MXene in high humidity condition. Interestingly, the Ti 3 C 2 T x /CNTs/Co film exhibited a remarkable photothermal conversion performance with high thermal cycle stability and tenability. Thus, the multifunctional Ti 3 C 2 T x /CNTs/Co nanocomposites possessing a unique blend of outstanding electromagnetic wave absorption and EMI shielding, light-driven heating performance, and flexible water-resistant features were highly promising for the next-generation intelligent electromagnetic attenuation system.

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Section: Introductionmentioning

confidence: 99%

Flexible and Waterproof 2D/1D/0D Construction of MXene-Based Nanocomposites for Electromagnetic Wave Absorption, EMI Shielding, and Photothermal Conversion

et al. 2021

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“…In recent years, with the gradual rise of 5G technology, more and more electronic devices rapidly appear in the world. These new-style products bring convenience to our life, and they also cause electromagnetic radiation problem, threating to our health [ 1 ]. In view of this background, it is urgent to develop electromagnetic absorbing or shielding materials in the GHz frequency band to overcome this problem.…”

Section: Introductionmentioning

confidence: 99%

Lotus Leaf-Derived Gradient Hierarchical Porous C/MoS2 Morphology Genetic Composites with Wideband and Tunable Electromagnetic Absorption Performance

et al. 2021

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Inspired by the nature, lotus leaf-derived gradient hierarchical porous C/MoS2 morphology genetic composites (GHPCM) were successfully fabricated through an in situ strategy. The biological microstructure of lotus leaf was well preserved after treatment. Different pores with gradient pore sizes ranging from 300 to 5 μm were hierarchically distributed in the composites. In addition, the surface states of lotus leaf resulted in the Janus-like morphologies of MoS2. The GHPCM exhibit excellent electromagnetic wave absorption performance, with the minimum reflection loss of − 50.1 dB at a thickness of 2.4 mm and the maximum effective bandwidth of 6.0 GHz at a thickness of 2.2 mm. The outstanding performance could be attributed to the synergy of conductive loss, polarization loss, and impedance matching. In particularly, we provided a brand-new dielectric sum-quotient model to analyze the electromagnetic performance of the non-magnetic material system. It suggests that the specific sum and quotient of permittivity are the key to keep reflection loss below − 10 dB within a certain frequency range. Furthermore, based on the concept of material genetic engineering, the dielectric constant could be taken into account to seek for suitable materials with designable electromagnetic absorption performance.

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“…In order to further clarify the attenuation mechanism, the dielectric loss tangent (tan dl = l''/l') and the magnetic loss (tan de = e''/e') tangent are proposed, which are the parameters to characterize the dielectric loss and the magnetic loss ability [59,60]. More deeply, e' and l' represent the storage capacity of a material for electrical and magnetic energy, respectively.…”

Section: Magnetic Lossmentioning

confidence: 99%

A review on one-dimensional carbon-based composites as electromagnetic wave absorbers

Jia

Liang

Chen

et al. 2021

J Mater Sci: Mater Electron

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Electromagnetic (EM) wave technology has greatly promoted the development of information industry and facilitated human life. At the same time, EM pollution caused by excessive use of EM waves will endanger human health and disrupt the normal operation of instruments. Therefore, compelling immediate action needs to be taken to solve EM pollution and interference problem. Onedimensional carbon has become a potential candidate to solve these problems because of its high dielectric loss, significant thermodynamic stability, high specific surface area, and low density. In this paper, the application of onedimensional carbon materials and magnetic materials and dielectric materials in absorbing EM waves is introduced, and the future development direction is prospected, which provides some feasible ideas for more scientists.

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Rational construction of hierarchical accordion-like Ni@porous carbon nanocomposites derived from metal-organic frameworks with enhanced microwave absorption

Cited by 178 publications

References 94 publications

Flexible and Waterproof 2D/1D/0D Construction of MXene-Based Nanocomposites for Electromagnetic Wave Absorption, EMI Shielding, and Photothermal Conversion

Flexible and Waterproof 2D/1D/0D Construction of MXene-Based Nanocomposites for Electromagnetic Wave Absorption, EMI Shielding, and Photothermal Conversion

Lotus Leaf-Derived Gradient Hierarchical Porous C/MoS2 Morphology Genetic Composites with Wideband and Tunable Electromagnetic Absorption Performance

A review on one-dimensional carbon-based composites as electromagnetic wave absorbers

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