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Article
Materials Science, Multidisciplinary
Yi Liu et al.
Summary: Silver coated porous carbon (Ag@PC) was successfully synthesized using a one-step hydrothermal synthesis process with fir as a biomass formwork. The metallic Ag particles were evenly distributed in the pores, accelerating graphitization process of the amorphous carbon. The Ag@PC composite without PVP exhibited higher dielectric constant and better electromagnetic wave dissipating capability. Combining with FSS further improved the EM wave absorbing performance.
INTERNATIONAL JOURNAL OF MINERALS METALLURGY AND MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Ting-Ting Liu et al.
Summary: Tailoring MXene composites enables the development of a health monitored strain array and an electromagnetic (EM) protective coating for customization of future high-quality life, particularly in specialized environments. The periodic patterned MXene exhibits high sensitivity of 96 MHz/% to structural deformation in the array. Use of the Ti3C2Tx composite as an EM coating achieves a shielding effect similar to 99.8% for customized spaces. The electrical conductivity tuning enables the Ti3C2Tx composite to switch between absorbing and shielding, with optimal EM absorption performance of -54.8 dB and average interference shielding performance exceeding 30 dB.
MATERIALS TODAY PHYSICS
(2023)
Article
Chemistry, Multidisciplinary
Fei Pan et al.
Summary: In this study, ferromagnetic microwave absorbers with different sequential architectures were designed using a bottom-up self-assembly method. The fibrous samples exhibited the best microwave absorption performance at a breakthrough filler loading of 2 wt%, and the microwave attenuation mechanism was explained by the coupling-enhancement effect between functional units.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Biao Zhao et al.
Summary: This study presents the preparation of two biphasic high-entropy (HE) oxides by controlling crystal phases and structural defects. The HE effects in these complex-phase ceramics induce beneficial defects for microwave dissipation. Stress concentrations and lattice distortions at the interface of spinel and perovskite planes result in numerous point defects and stacking faults. By precise regulation of the components' phase, synergistic effects are achieved in rock salt/spinel HE oxides. The intense polarization driven by structural defects and multi-phases leads to excellent microwave absorption performance, with a minimal reflection loss of -54.5 dB. This research provides valuable guidelines for the design of microwave absorbers using HE oxides.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Physical
Xiaodi Zhou et al.
Summary: This study presents an improved strategy for the microwave absorption performance of carbon-based materials. By employing a temperature-controlling treatment on bimetal ZIFs, the derived composites exhibited excellent dissipation ability.
Article
Chemistry, Multidisciplinary
Xiaojun Zeng et al.
Summary: By employing strategies such as HF etching, KOH shearing, and high-temperature molten salt, MXene-based nanostructures with favorable microstructures and surface states, including layered MXene (L-MXene), network-like MXene nanoribbons (N-MXene NRs), porous MXene monolayer (P-MXene ML), and porous MXene layer (P-MXene L), are constructed to enhance their electromagnetic wave absorption performance.
Article
Chemistry, Multidisciplinary
Yang Li et al.
Summary: Although many experiments have been conducted on defect engineering in semiconductor absorbers, the systematic relationship between charge carriers, defects, heterointerfaces, and electromagnetic wave absorption has not been established. In this study, a new thermodynamic and kinetic control strategy is proposed to create multiphase TixO2x-1 materials through hydrogenation calcination. The TiOC-900 composite demonstrates efficient electromagnetic wave absorption due to conductance loss and interfacial polarization, suggesting a new pathway for designing high-efficiency EM wave absorbing semiconducting oxides.
Article
Nanoscience & Nanotechnology
Jin-Cheng Shu et al.
Summary: Advanced electromagnetic devices, as the pillars of the intelligent age, are redefining the structure of society by presenting pluralism and diversity. However, the increasing popularity of Big Data has led to a more serious bombardment of electromagnetic radiation on society. Therefore, this study constructs an eco-mimetic nanoarchitecture, drawing wisdom and inspiration from nature, to exhibit excellent electromagnetic response.
NANO-MICRO LETTERS
(2023)
Article
Materials Science, Multidisciplinary
Ting-Ting Liu et al.
Summary: The development of multifunctional electromagnetic wave (EMW) absorbing materials is crucial for the advancement of military weapons and 5G smart communication technology. By constructing engineered multi-relaxation interfaces, materials can enhance EMW attenuation. In this study, a Ti3C2T (x) /TiO2 heterogeneous interface derived from MXene is tailored through in-situ annealing, resulting in multi-relaxation nano-interfaces. The optimized Ti3C2T (x) /TiO2 shape achieved a maximum reflection loss of -30.4 dB at 5.67 GHz and a significant reduction in radar cross section up to -53 dBm(2), showing promising applications in radar stealth and practical electromagnetic protection.
Article
Chemistry, Multidisciplinary
Haojie Jiang et al.
Summary: Demand for lightweight and efficient electromagnetic wave absorbers is increasing rapidly due to advancements in integrated electronics and military applications. MXene-based absorbers have been widely studied, but there is a need for more efficient coupling and thinner thicknesses. Ordered heterogeneous materials have emerged as a novel design concept to address this challenge. In this study, an ordered heterostructured engineering approach was proposed to improve the magnetic loss capacity of Ti3CNTx MXenes/Aramid nanofibers/FeCo@SiO2 nanobundles aerogel. The results show enhanced response to the magnetic field vector and improved impedance matching, leading to thinner matching thickness. The synthesized material achieved full-wave absorption in the X and Ku-band with a low reflection loss and density, demonstrating the effectiveness of ordered heterostructured engineering for high-performance electromagnetic wave absorbers.
Article
Materials Science, Ceramics
Huanhuan Niu et al.
Summary: By employing a combinatorial electrostatic assembly and hydrothermal reaction method, SiO2@Ti3C2Tx@CoNi microspheres with hydrangea-like core-shell structure were designed and prepared to address the issues of high permittivity and self-stacking in Ti3C2Tx MXene. These microspheres consist of an outer layer of CoNi nanosheets and intermediate Ti3C2Tx MXene nanosheets wrapping on the modified SiO2 core, resulting in homogeneous and heterogeneous interfaces. The optimized impedance matching and core-shell structure enhance the reflection loss (RL) through electromagnetic synergy, leading to outstanding microwave absorption (MA) performance with an RL value of -63.95 dB and an effective absorption bandwidth (EAB) of 4.56 GHz at an ultra-thin thickness of 1.2 mm. This research demonstrates the highly efficient trilayer core-shell structure designing strategy for tuning the MA performance of MXene-based microspheres.
JOURNAL OF ADVANCED CERAMICS
(2023)
Article
Materials Science, Ceramics
Xiaojun Zeng et al.
Summary: In this work, a Mo-MXene/CoNi-NC heterostructure was fabricated by combining Mo2TiC2-MXene nanofibers with Co-metal-organic framework and CoNi layered double hydroxide ultrathin nanosheets. The designed heterostructure exhibits excellent electromagnetic wave absorption ability, attributed to highly dispersed small CoNi alloy nanoparticles, a three-dimensional conductive network assembled by Mo-MXene nanofibers, N-doped hollow carbon vesicles, and abundant dual heterogeneous interface. This work shows great potential in developing advanced MXene-based electromagnetic wave absorption devices.
JOURNAL OF ADVANCED CERAMICS
(2023)
Article
Chemistry, Multidisciplinary
Biao Zhao et al.
Summary: A high-entropy-stabilized (Ca0.2Sr0.2Ba0.2La0.2Pb0.2)TiO3 perovskite with improved absorption bandwidth is reported. The regulation of entropy configuration leads to significant grain boundaries, oxygen defects, and a dense distorted lattice, contributing to the dielectric attenuation performance. The strong lattice distortions in the high-entropy perovskite offer varied transport for electron carriers, resulting in unusual dielectric polarization loss. This study opens up an effective avenue for designing strong microwave absorption materials and improving other properties for high-entropy oxides through entropy engineering.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Physical
Shengtao Gao et al.
Summary: Hollow ZnFe2O4/residual carbon (RC) composites were prepared using a simple hydrothermal method, and they show a double-peak electromagnetic wave absorption capability in S, C, and Ku bands. With a thickness of 4.0 mm, the composites exhibit a minimum reflection loss (RL) of -38.99 dB and an effective absorption bandwidth (RL <= -10 dB) of 3.20 GHz. The hollow ZnFe2O4/RC composites are anticipated to be promising electromagnetic wave absorbers due to their strong magnetic loss, good impedance match, optimized electrical properties, and efficient microstructure.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Physical
Yang Li et al.
Summary: In this study, Ti4O7/carbon nanotubes (CNTs)/Al2O3 coatings were successfully fabricated, which exhibited enhanced ε' and ε values in the X-band frequency range through the synergistic manipulation of dielectric loss and conduction loss. The addition of an appropriate amount of CNTs effectively improved the flexural strength of the coatings. This research provides a strategy for broadening the application of absorptive and shielding ceramic coatings by tailoring the synergistic effect of dielectric loss and conduction loss in oxygen vacancy-mediated Ti4O7 material.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Chemistry, Multidisciplinary
Fei Pan et al.
Summary: Intelligent electromagnetic wave absorbers (IEAs) are highly sought after for their ability to adapt to the complex and volatile application environments of the 5G era. However, there is currently a lack of research on the convertible electromagnetic wave absorption mode and its integrated design with external physical stimulations. This work presents a promising V2C-VO2(M) heterostructure that allows for intelligent switching in any conditions, with near wave-transmission characteristics at 25°C and wide effective absorption bandwidth at 70°C. The development of a multilayered electromagnetic functional device further facilitates the absorber's phase transition temperature.
ADVANCED FUNCTIONAL MATERIALS
(2023)
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
Yang Li et al.
Summary: The combination of high conductive Magneli phase titanium oxides and magnetic metals can form a good impedance matching, making them a candidate for a new generation of absorbing materials. Through the use of high-temperature pyrolysis, hydrothermal reduction, and hot press, Ti4O7/Ni/PVDF composites were prepared, showing excellent microwave absorption properties.
ADVANCED COMPOSITES AND HYBRID MATERIALS
(2021)
Article
Engineering, Environmental
Siyao Cheng et al.
Summary: By utilizing a modified Zn/HCl system for controlled hydrogenation of transition metal oxides (TMO), the research shows a significant improvement in the electromagnetic absorption (EMA) performance of TMO. The study reveals a close relationship between EMA property and hydrogenation degree, with potential for efficient tuning through hydrogenation control. These findings suggest that enhanced EMA performance in hydrogenated TMO is attributed to changes in band structure leading to increased electrical conductivity.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Chemistry, Physical
Jin-Bo Cheng et al.
Summary: This study presents a novel aerogel absorber with low density and unique hierarchical structures, demonstrating strong microwave absorption performance. The aerogel exhibits superior reflection loss and wide effective absorption bandwidth, surpassing many previous materials.
Review
Chemistry, Multidisciplinary
Yangyang Pei et al.
Summary: With the rapid development of electronic and information technologies, sensors are becoming increasingly important in daily life, with MXene emerging as a promising 2D material with great potential in the field of sensors.
Article
Engineering, Multidisciplinary
Yang Li et al.
Summary: Novel dual-configuration nanoporous Co3O4-C and Co/CoO-C composites were developed, demonstrating exceptional microwave absorption performance attributed to multiple factors such as multiple reflection and scattering, interface polarization effect, and good impedance matching, showing promising potential for lightweight and high-efficient microwave absorbers.
COMPOSITES PART B-ENGINEERING
(2021)
Article
Chemistry, Multidisciplinary
Xiaoqi Zheng et al.
Summary: The research investigates the application of BiOBr/C Schottky junctions in photocatalytic H-2 generation and overall water splitting. Two stack forms of the junctions, parallel and vertical, were prepared controllably via CVD, with the parallel structure showing significantly higher light response and H-2 generation efficiency compared to the vertical structure.
Article
Chemistry, Multidisciplinary
Michael Naguib et al.
Summary: Since their discovery in 2011, the number of 2D transition metal carbides and nitrides (MXenes) has steadily increased to over 40 compositions, potentially becoming the largest family of 2D materials. MXenes exhibit unique properties such as high electrical conductivity, which make them useful in various applications like energy storage and optoelectronics. The production of MXenes using methods like selective etching has led to rapid growth in research publications and patents, indicating promising commercialization potential.
ADVANCED MATERIALS
(2021)
Article
Materials Science, Ceramics
Yang Li et al.
Summary: In this study, a Ti4O7/magnetic metal composite was designed and prepared using electrostatic assembly and in-situ reduction reaction, showing useful microwave absorption properties with wide broadband, strong absorption, and low filler amount. The results highlight the importance of filler ratio, frequency, and absorber thickness in tuning the electromagnetic characteristics of the absorber.
CERAMICS INTERNATIONAL
(2021)
Article
Materials Science, Ceramics
Keke Yuan et al.
Summary: SiCnw/SiCNO composite aerogels with excellent EMA performance were successfully fabricated by regulating morphology and phase composition through microwave treatment temperature variation. The superior EMA performance is mainly attributed to improved impedance matching, multi-reflection, multi-interfacial polarization, and micro current caused by migration of hopping electrons.
JOURNAL OF ADVANCED CERAMICS
(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.
JOURNAL OF ADVANCED CERAMICS
(2021)
Article
Chemistry, Physical
Mao-Sheng Cao et al.
Summary: This study investigates the crucial role of understanding dominating electromagnetic response and energy conversion for achieving tunable electromagnetic function at elevated temperature. By analyzing dielectric genes inside 2D carbon-based materials, especially genetic genes, the contribution of conduction and relaxation to electromagnetic response is highlighted. The detailed evolution of dielectric genes related to Fe3O4 content, temperature, and spatial distribution provides a promising approach for tunable microwave absorption performance.
Article
Materials Science, Multidisciplinary
Yuchang Qing et al.
Summary: Ti4O7 ceramic nanoparticles were successfully synthesized through a solvothermal and annealing method, and mixed with polyimide (PI) to show high electrical conductivity and outstanding dielectric loss. These results suggest that highly conductive dark Ti4O7 composites are promising for designing absorbers and other EM applications.
JOURNAL OF MATERIALS CHEMISTRY C
(2021)
Article
Chemistry, Physical
Lulu Song et al.
Article
Engineering, Multidisciplinary
Lulu Song et al.
COMPOSITES PART B-ENGINEERING
(2020)
Review
Chemistry, Physical
Zhaoning Yang et al.
JOURNAL OF ALLOYS AND COMPOUNDS
(2019)
Article
Chemistry, Inorganic & Nuclear
Gaihua He et al.
DALTON TRANSACTIONS
(2019)
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Lulu Song et al.
COMPUTATIONAL MATERIALS SCIENCE
(2017)
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Changqing Song et al.
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Multidisciplinary Sciences
Bandna Bharti et al.
SCIENTIFIC REPORTS
(2016)
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Materials Science, Ceramics
Jian Yang et al.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2016)
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Nanoscience & Nanotechnology
Biao Zhao et al.
ACS APPLIED MATERIALS & INTERFACES
(2015)
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Chemistry, Physical
H. Montiel et al.
JOURNAL OF ALLOYS AND COMPOUNDS
(2015)
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Chemistry, Multidisciplinary
Michael Naguib et al.
ADVANCED MATERIALS
(2014)
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Chemistry, Multidisciplinary
Maria Vasilopoulou
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Chemistry, Multidisciplinary
Ting Xia et al.
ADVANCED MATERIALS
(2013)
Article
Chemistry, Physical
Michael W. Gaultois et al.
JOURNAL OF MATERIALS CHEMISTRY
(2011)
Article
Physics, Applied
Dan Wang et al.
APPLIED PHYSICS LETTERS
(2009)
Article
Physics, Multidisciplinary
Wenguang Zhu et al.
PHYSICAL REVIEW LETTERS
(2009)
Article
Physics, Multidisciplinary
Yanqin Gai et al.
PHYSICAL REVIEW LETTERS
(2009)
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Chemistry, Multidisciplinary
Guangyu Zhang et al.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2006)
Article
Chemistry, Physical
I Nakamura et al.
JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL
(2000)
