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Article
Nanoscience & Nanotechnology
Ke Yang et al.
Summary: In this study, positively charged MoO3/PDA microspheres and negatively charged MXene nanosheets wrapped on the surface were obtained using the principle of electrostatic self-assembly. The effects of the ratio between MoO3/PDA and MXene nanosheets and loading amount on microwave absorption properties were investigated. The Mo2C/NC@MXene-2 sample obtained at a ratio of 3:1 and 25% loading showed the best absorption performance.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Multidisciplinary
Caiyue Wen et al.
Summary: This study successfully assembled double-shell MXene@Ni microspheres using a spheroidization strategy to improve microwave absorption performance. The structure offers massive accessible active surfaces and the introduction of Ni nanospikes provides additional magnetic loss capacity.
Article
Engineering, Environmental
Jinkun Liu et al.
Summary: The study introduces a novel absorber of CuFe2O4/MoS2 composite, which combines magnetic ferrite CuFe2O4 with 2D MoS2 nanosheets to achieve a wide effective absorption bandwidth. The cooperative interaction of dielectric and magnetic loss results in effective absorption of electromagnetic waves in the entire Kuband and part of the X-band. This work presents a strategy for obtaining novel high-performance absorbers.
CHEMICAL ENGINEERING JOURNAL
(2022)
Review
Chemistry, Multidisciplinary
Ming Qin et al.
Summary: Comprehensive views on dielectric loss mechanisms provide important guidance for understanding the attenuation behavior of materials. Current researches focus more on materials synthesis rather than in-depth mechanism study. Therefore, further research on in-depth mechanisms, emphasis on new dielectric loss mechanisms, and new modulation strategies are needed to achieve simple and effective EM wave attenuation behavior modulation.
Article
Chemistry, Physical
Zhengchen Wu et al.
Summary: This article introduces a method of integrating hierarchical polarizations into a nanostructure to enhance microwave absorption performance. Researchers have prepared Mo2C@N, P dual-doped carbon microspheres through a simple yeast-template method, which exhibit excellent microwave absorption performance. These achievements have important application prospects for the preparation of porous metals or metal compounds/carbon composites.
Article
Engineering, Environmental
Lei Cai et al.
Summary: In this study, layered N-doped MXene flakes and hollow Co-ZIF particles were successfully fabricated using a controllable cooperative protection etching strategy and electrostatic self-assembly technology. The resulting microwave absorption hybrids showed ultrathin thickness, strong electromagnetic wave absorption capability, and low filler loading, outperforming similar hybrids reported in the literature.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Materials Science, Multidisciplinary
Feiyue Hu et al.
Summary: This study systematically evaluated the electromagnetic wave absorption performance of the emerging 2D MXene material Mo2TiC2Tx. The MXene etched by pure hydrofluoric acid showed high EMW absorption properties. This research expands the application of the 2D MXene materials family.
JOURNAL OF MATERIALS SCIENCE
(2022)
Article
Nanoscience & Nanotechnology
Xiao Li et al.
Summary: This study reports a carefully designed electrostatic self-assembly strategy to fabricate magnetized MXene-rGO/CoNi films, which exhibit excellent microwave absorption performance. The insertion of CoNi nanoparticles decorated rGO nanosheets into MXene layers effectively reduces the high permittivity, and the strong magnetic coupling between FeCo alloy nanoparticles enhances the magnetic loss capability.
NANO-MICRO LETTERS
(2022)
Article
Engineering, Environmental
Feiyue Hu et al.
Summary: In this work, a rising delaminated Mo2TiC2Tx MXene was synthesized and spherical and flower-like Ni were loaded on it. The flower-like Ni-loaded MXene exhibits optimal absorption performance with a minimum reflection loss value of -50.36 dB at a thickness of 1.4 mm, corresponding to 13.28 GHz frequency with a bandwidth of 3.04 GHz. Meanwhile, Ni-loaded MXene can effectively absorb electromagnetic waves in the X and Ku bands (8-18 GHz) within a thickness of 2 mm.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Nanoscience & Nanotechnology
Limeng Song et al.
Summary: A multifunctional SiC@SiO2 nanofiber aerogel with ultralow density, ultra-elasticity, high temperature resistance, and significant strain-dependent piezoresistive properties was successfully fabricated using chemical vapor deposition and heat treatment methods.
NANO-MICRO LETTERS
(2022)
Article
Materials Science, Ceramics
Limeng Song et al.
Summary: In this study, a multifunctional SiC nanofiber aerogel spring (SiC NFAS) was successfully prepared using a simple thermochemical process. It exhibited ultralow density, ultralow thermal conductivity, excellent ablation and oxidation resistance, and a stable three-dimensional structure. It showed remarkable mechanical properties and thermal insulation performance at both low and high temperatures. The SiC NFAS has potential insulation applications.
JOURNAL OF ADVANCED CERAMICS
(2022)
Article
Engineering, Environmental
Huanhuan Niu et al.
Summary: In this study, a simple method of preparing SiO2@Ti3C2Tx core-shell structure is developed through electrostatic assembly and hydrogen bonding, which shows excellent electromagnetic wave absorption performance. SiO2 spheres, serving as templates, not only prevent the restacking of Ti3C2Tx nanosheets, but also modulate the surface properties and significantly enhance the absorption capacity.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Materials Science, Multidisciplinary
Yuming Feng et al.
Summary: This study prepared a zinc aluminosilicate (ZAS) glass-ceramic precursor using a sol-gel method, utilized short carbon fiber (SCF) as the wave absorber, and combined ZAS and SCF with a silane coupling agent (KH-550) to adjust the impedance matching of the material. Through simple experimental methods and adjustment techniques, the desired absorption performance and corresponding bandwidth can be achieved.
MATERIALS RESEARCH BULLETIN
(2022)
Article
Materials Science, Ceramics
Feiyue Hu et al.
Summary: This study presents the preparation of MoO3/TiO2/Mo2TiC2Tx hybrids by growing MoO3 and TiO2 oxides on Mo2TiC2Tx MXene. The hybrids exhibit excellent electromagnetic wave absorption performance and a broad effective absorption bandwidth when annealed at the appropriate temperature.
JOURNAL OF ADVANCED CERAMICS
(2022)
Article
Nanoscience & Nanotechnology
Zhengchen Wu et al.
Summary: The precise engineering of heterojunctions in MXene-based composites significantly enhances their electromagnetic wave absorption and shielding capabilities. By decorating Ti3C2Tx lamellas with coordination compounds and controlling their assembly into hierarchical microspheres, a new microstructure with excellent EM wave absorption and interference shielding performance is achieved. The 2D/2D/0D heterojunctions in the carbonized Ti3C2Tx/C/MoO2 microspheres can be tuned to regulate electric/dielectric properties, resulting in superior EM energy absorption and out-plane electron flowing.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Engineering, Environmental
Ke Yang et al.
Summary: In this study, MoS2 nanosheets were uniformly grown on MnO2 nanowires template coated with polydopamine, resulting in the core-shell structure of MnO2@NC@MoS2 nanowires after annealing. By etching and removing the MnO2 nanowires template, a tubular hollow structure NC@MoS2 wave absorber was obtained, which effectively enhanced the microwave absorption performance.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Engineering, Environmental
Ye Liao et al.
Summary: Pure dielectric absorbers with a tunable wide-band response and strong attenuation capability for electromagnetic wave absorption are challenging to synthesize. The hierarchical MnO2 microspheres composed of MnO2 nanofibers were synthesized via a simple one-step hydrothermal method, allowing for tunable microwave absorption and boosted performance with nickel doping. The Ni-doped microspheres with optimized morphology exhibit a maximum reflection loss at 8.31 GHz and an effective absorption bandwidth at 2 mm thickness.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Engineering, Environmental
Fei Wu et al.
Summary: The intertwined one-dimensional (1D) heterostructure constructed from MXene and metal-organic frameworks (MOFs) allows for effective control of carbon nanotubes (CNTs) growth, thereby regulating electromagnetic parameters. The resulting 3D cross-linked network features extensive heterogeneous interfaces, hierarchical pore structure, and desirable conductivity, exhibiting superior microwave absorbing properties.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Materials Science, Multidisciplinary
Digang Fan et al.
Summary: Carbon materials have potential as excellent absorbing materials due to their lighter weight, easy-to-control graphitization degree, and good dielectric properties. The hollow carbon spheres (HPC) with a porous structure can achieve wide-band effective microwave absorbing performance under an ultra-thin thickness, making them a candidate for high-efficiency microwave absorbers. The special hollow, porous structure and suitable degree of graphitization are key factors for the effective wave absorption of HPC.
JOURNAL OF MATERIALS SCIENCE
(2021)
Article
Chemistry, Physical
Charanjeet Singh et al.
Summary: This study focuses on the preparation and microwave characterization of composites of M-type hexagonal ferrite with paraffin wax. The influence of Sr2+ ion content on material parameters, including grain morphology, dielectric, magnetic, conductivity, and reflection loss properties, was analyzed. The results indicate that higher Sr2+ ion content leads to lower dielectric and magnetic loss tangent, as well as increased AC conductivity with frequency.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Physical
Yuhong Cui et al.
Summary: Reasonable control of the composition and structure of porous nanomaterials is essential for improving its electromagnetic wave absorption performance. The heterogeneous trimetal Co@ZnO/Ni@NC nanocage prepared in this study shows excellent absorption performance with an effective absorption bandwidth of 12.6 GHz. The synergistic effect of the three metal components and the hollow structure optimization contribute to enhancing the absorbing performance of the nanocage.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2021)
Article
Chemistry, Physical
Xiaochuang Di et al.
Summary: Thin and lightweight absorbers with strong absorption capacity are the future direction in EMW absorption research. The carbon@ZnFe2O4 composite in this study exhibited excellent microwave absorption performance with significant absorption capabilities at low thickness and filler loading.
Article
Chemistry, Multidisciplinary
Ming Qin et al.
Summary: This study demonstrates the defect induced dielectric loss dominant mechanism in multi-shelled spinel hollow spheres, showing that defects in spinel structure play a more profound role in electromagnetic wave dissipation than oxygen vacancies. The research also suggests that electron spin resonance test can be used as a novel approach to probe materials' electromagnetic wave absorption capacities.
Article
Chemistry, Multidisciplinary
Ming Qin et al.
Summary: In this study, lightweight Ni foam with NiO/NiFe2O4 in situ growth composites were fabricated to address the issues of poor dispersibility and chemical stability in metal-based electromagnetic wave absorbing materials. The foam structure and NiO/NiFe2O4/Ni components were found to synergistically enhance the EM wave absorption capacity. This work sheds light on the synergistic effect of structure and components on EM wave absorption behaviors, offering a new pathway for preparing lightweight and high-performance metal-based EM wave absorbers.
ADVANCED FUNCTIONAL MATERIALS
(2021)
Article
Chemistry, Physical
Yuhong Cui et al.
Summary: In this study, two-dimensional Ti(3)C(2)Tx MXene nanosheets and one-dimensional Ni nanochains were assembled into three-dimensional porous MXene/Ni composite microspheres using ultrasonic spray, showing excellent electromagnetic wave absorption performance and impedance matching.
Article
Chemistry, Physical
Xiao Li et al.
Summary: MXene is used as a microwave absorber to defense electromagnetic pollution, and the excessive conductivity of single-layer MXene is reduced by preparing a flexible MXene/FeCo film via vacuum-assisted filtration, with the intercalation of magnetic nanoparticles destroying the continuous layered structure. The rough surface of nanoflower-like FeCo alloy enhances interfacial polarization and magnetic loss capabilities, leading to better microwave absorption performance.
Article
Chemistry, Physical
Jun He et al.
Summary: MXene-based magnetic-dielectric composites, such as FeNi/Ti3C2Tx MXene composites, show potential for practical applications in microwave absorbing materials. By adjusting the FeNi nanoparticles content, the frequency dependence of the composite materials can be regulated to enhance magnetic loss and impedance matching, resulting in a broadband effective absorption performance.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Materials Science, Multidisciplinary
Xiachen Fan et al.
Summary: Al matrix composites reinforced with core@shell structured Ti3C2Tx@Ni particles exhibited improved mechanical properties and electromagnetic interference shielding effectiveness (EMI SE). The enhanced tensile strength and maintained plasticity of the composites were attributed to the homogeneous distribution of reinforcement particles, efficient stress transfer, and multiple energy absorption mechanisms. The synergic effect of absorption and magnetic loss contributed to the enhanced EMI SE performance of the composites.
JOURNAL OF MATERIALS SCIENCE
(2021)
Article
Nanoscience & Nanotechnology
Jiabin Chen et al.
Summary: FeCo/CoFe2O4/carbon nanofiber composites were successfully prepared by electrospinning for effective electromagnetic wave attenuation, achieving a bandwidth of 5.0 GHz and an absorption peak of -52.3 dB at a thickness of 1.95 mm. Additionally, the composite coatings demonstrated significant radar cross section reduction and scattering ability to electromagnetic waves when analyzed using ANSYS Electronics Desktop 2018(HFSS).
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Physical
Zhongjing Shen et al.
Summary: This study utilized hollow CoNi alloy as the core and two types of carbon shells to protect it from oxidation and enhance its electromagnetic wave absorption performance. The CoNi@C and CoNi@NC absorbers were synthesized by in-situ polymerization on the surface of the alloy, with the absorption performance tuned by varying calcination temperature. The composites exhibited significantly improved microwave absorption performance compared to the pristine alloy, with effective bandwidths achieved at specific thicknesses.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Engineering, Electrical & Electronic
Xian-Hui Zhang et al.
Summary: This study presents a hydrothermal method to prepare a bayberry spherical manganese-zinc ferrite, which showed enhanced saturation magnetic properties and coercivity after carbon coating. The carbonized ferrite also exhibited favorable microwave absorbing performance.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2021)
Article
Materials Science, Ceramics
Heng Du et al.
Summary: Hierarchical MoS2/TiO2/Ti3C2Tx composites were successfully prepared by one-pot hydrothermal method, showing enhanced microwave absorbing performance. MoS2 nanosheets anchored on the surface and interlayer of Ti3C2Tx greatly improved the electromagnetic wave absorption, with wide frequency coverage and lightweight features.
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