Flower-like CoLa/Ti3C2Tx nanocomposites for high-performance electromagnetic wave absorption

Zhao, Jia; Wang, Shan; Yao, Yanqing; Han, Xuhui; Chai, Chunpeng; Ma, Hui

doi:10.1016/j.jallcom.2022.167326

Cited by 11 publications

(4 citation statements)

References 46 publications

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“…The embroidered sphere-like structure of the lamellae provides more surface area of contact between SnO 2 and the air medium, which generates an interfacial polarization effect and can induce repeated consumption of electromagnetic waves between the lamellae. [39][40][41] However, it can still be found that some of the microspheres are not growing sufficiently, so the electromagnetic wave absorption capacity is not optimal. As for S3 in Fig.…”

Section: Materials Characterizationmentioning

confidence: 99%

Sodium citrate-induced generation of multi-interfacial embroidered spherical SnO₂for augmented electromagnetic wave absorption

Zhang

Yan³

et al. 2023

J. Mater. Chem. C

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Section: Materials Characterizationmentioning

confidence: 99%

Sodium citrate-induced generation of multi-interfacial embroidered spherical SnO₂for augmented electromagnetic wave absorption

Zhang

Yan³

et al. 2023

J. Mater. Chem. C

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“…It is seen that all the XRD spectra are similar, and most of the peaks are relevant to those of NiCrFeO 4 or FeCoCrO 4 substances, manifesting the formation of a single-phase spinel structure in these HE ferrites. As we know, all the elements of Fe, Co, Ni, Cr, Zn, Cu, and Mn belong to the transition metal group and possess the approximate atomic radius, which easily forms single-phase crystal structures, as well as their oxide materials [40]. Besides, it is seen that the XRD pattern of HEO-Cu has one small peak at about 38.7 degrees, in accordance with the (111) plane of CuO, indicating the existence of residue raw substance of CuO.…”

Section: Structural Characterizationmentioning

confidence: 99%

High-Entropy Spinel Ferrites with Broadband Wave Absorption Synthesized by Simple Solid-Phase Reaction

et al. 2023

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In this work, high-entropy (HE) spinel ferrites of (FeCoNiCrM)xOy (M = Zn, Cu, and Mn) (named as HEO-Zn, HEO-Cu, and HEO-Mn, respectively) were synthesized by a simple solid-phase reaction. The as-prepared ferrite powders possess a uniform distribution of chemical components and homogeneous three-dimensional (3D) porous structures, which have a pore size ranging from tens to hundreds of nanometers. All three HE spinel ferrites exhibited ultrahigh structural thermostability at high temperatures even up to 800 °C. What is more, these spinel ferrites showed considerable minimum reflection loss (RLmin) and significantly enhanced effective absorption bandwidth (EAB). The RLmin and EAB values of HEO-Zn and HEO-Mn are about −27.8 dB at 15.7 GHz, 6.8 GHz, and −25.5 dB at 12.9 GHz, 6.9 GHz, with the matched thickness of 8.6 and 9.8 mm, respectively. Especially, the RLmin of HEO-Cu is −27.3 dB at 13.3 GHz with a matched thickness of 9.1 mm, and the EAB reaches about 7.5 GHz (10.5–18.0 GHz), which covers almost the whole X-band range. The superior absorbing properties are mainly attributed to the dielectric energy loss involving interface polarization and dipolar polarization, the magnetic energy loss referring to eddy current and natural resonance loss, and the specific functions of 3D porous structure, indicating a potential application prospect of the HE spinel ferrites as EM absorbing materials.

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“…Communication technologies and electronic facilities have developed with high speed nowadays, which has caused electromagnetic radiation to become an increasingly serious problem. − Electromagnetic radiation not only has an influence on communication or electronic equipment but also can be harmful to human health. − Therefore, it is urgent to find a valid strategy to solve this problem. − Developing electromagnetic wave (EMW) absorption materials is a promising strategy to shield or alleviate electromagnetic radiation. − And the ideal EMW absorption materials need the merits of being lightweight and having thin matching thickness, strong absorption, and broad bandwidth. − To achieve this aim, researchers are committed to integrating these performances into one composite. − …”

Section: Introductionmentioning

confidence: 99%

Fabrication of an Ultralight Ni-MOF-rGO Aerogel with Both Dielectric and Magnetic Performances for Enhanced Microwave Absorption: Microspheres with Hollow Structure Grow onto the GO Nanosheets

Cao

Yang

Zhao

et al. 2023

ACS Appl. Mater. Interfaces

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An ultralight Ni-MOF-rGO aerogel which possess the merits of not only broad bandwidth and strong absorption but also lightweight and thin matching thickness is fabricated through a hydrothermal treatment, freeze-drying, and annealing procedure. The Ni@C microspheres are dispersed randomly and evenly on the graphene oxide (GO) nanosheets, which can be proved through SEM and TEM results. The electromagnetic parameters of the composite can be adjusted by changing the mass ratio of the MOF and GO to endow the material with both good impedance matching and superior electromagnetic wave absorption performances. Consequently, the resulting composite shows outstanding microwave absorption performance, which achieves strong absorption (−51.19 dB) and broad effective absorption bandwidth (6.32 GHz) with a thickness of 1.9 mm while the filling content is only 2 wt %. In addition, the multiple loss mechanisms of the Ni-MOF-rGO aerogel are illustrated, including conduction loss, dipolar polarization, interfacial polarization, magnetic resonance, and eddy current loss. In a word, the extraordinary microwave absorption performance is ascribed to the synergistic effects of the unique multiple layered structure of GO and the hollow core−shell structure of the Ni@C microsphere. This work demonstrates that the ultralight aerogel with excellent electromagnetic wave absorption performance is a promising strategy for microwave absorption application.

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Flower-like CoLa/Ti3C2Tx nanocomposites for high-performance electromagnetic wave absorption

Cited by 11 publications

References 46 publications

Sodium citrate-induced generation of multi-interfacial embroidered spherical SnO₂for augmented electromagnetic wave absorption

Sodium citrate-induced generation of multi-interfacial embroidered spherical SnO₂for augmented electromagnetic wave absorption

High-Entropy Spinel Ferrites with Broadband Wave Absorption Synthesized by Simple Solid-Phase Reaction

Fabrication of an Ultralight Ni-MOF-rGO Aerogel with Both Dielectric and Magnetic Performances for Enhanced Microwave Absorption: Microspheres with Hollow Structure Grow onto the GO Nanosheets

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Flower-like CoLa/Ti3C2Tx nanocomposites for high-performance electromagnetic wave absorption

Cited by 11 publications

References 46 publications

Sodium citrate-induced generation of multi-interfacial embroidered spherical SnO2for augmented electromagnetic wave absorption

Sodium citrate-induced generation of multi-interfacial embroidered spherical SnO2for augmented electromagnetic wave absorption

High-Entropy Spinel Ferrites with Broadband Wave Absorption Synthesized by Simple Solid-Phase Reaction

Fabrication of an Ultralight Ni-MOF-rGO Aerogel with Both Dielectric and Magnetic Performances for Enhanced Microwave Absorption: Microspheres with Hollow Structure Grow onto the GO Nanosheets

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Sodium citrate-induced generation of multi-interfacial embroidered spherical SnO₂for augmented electromagnetic wave absorption

Sodium citrate-induced generation of multi-interfacial embroidered spherical SnO₂for augmented electromagnetic wave absorption