MOF-Derived Hollow Fe/FeN/C Heterogeneous Composites for Broad-Band and Efficient Microwave Absorption DOI

Shijiang Feng,

Rong Qiang,

Yulong Shao

et al.

Langmuir, Journal Year: 2025, Volume and Issue: unknown

Published: April 16, 2025

The construction of hollow structures and the incorporation metal nanoparticles have been shown to be two potential approaches achieving high-performance microwave absorption. In this study, a polyhedron material featuring an FeN/Fe-doped carbon matrix was synthesized by acidification corrosion pyrolysis strategy. formation heterojunctions, coupled with design structures, significantly improved dielectric loss capacity material. Furthermore, magnetic not only increased but also enriched mechanisms material, leading overall improvement in loss. Under synergistic effects these factors, exhibited exceptional absorption properties. particular, at thickness 2.3 mm, minimum reflection value FeN/Fe@HC nanocomposite reached -64.5 dB effective bandwidth 5.1 GHz. These results further highlight importance structure atom doping improving performance.

Language: Английский

Radial Dielectric Gradient Core–Shell Ce/NiCo@C Composites for Simultaneous Electromagnetic Wave Absorption and Antibacterial Activity via Ce3+/Ce4+ Valence Modulation DOI Open Access

Weiran Yan,

Jiaxun Hu,

Cong Yi

et al.

Advanced Functional Materials, Journal Year: 2025, Volume and Issue: unknown

Published: March 4, 2025

Abstract The increasing demand for multifunctional materials that combine electromagnetic wave (EMW) absorption and antibacterial properties has driven the development of novel capable meeting these challenges. Here, a core–shell Ce/NiCo@C composite with radial dielectric gradient structure is presented, designed to enhance EMW exhibit potent activity. material's unique architecture, which includes multilayered configuration distribution Ce 3+ /Ce 4+ valence states, modulates constant promotes electron migration polarization under exposure. This design results in broad effective bandwidth 7.12 GHz, minimum reflection loss (RL min ) −67.2 dB at thickness 1.94 mm. Additionally, reversible transition between generates reactive oxygen species (ROS), disrupt microbial cell membranes inhibit bacterial growth. demonstrates sterilization rate exceeding 99% against E. coli significant bactericidal effect S. aureus . work highlights potential integrating valence‐modulated, advanced antimicrobial applications, offering promising approach future diverse technological fields.

Language: Английский

Citations

1
Rational design of microwave absorbing cryogels using microcrystalline cellulose and cellulose-derived nutshell/metal nanoparticles DOI Creative Commons

Farbod Fazlalizadeh,

Zahra Nezafat, Shahrzad Javanshir

et al.

Industrial Crops and Products, Journal Year: 2025, Volume and Issue: 229, P. 120954 - 120954

Published: April 5, 2025

Language: Английский

Citations

0
Microwave absorption properties of Ni/porous carbon fiber composites derived from flax fiber templates DOI

Jiadong Wu,

Tianchi Wang, Jian Kong

et al.

Carbon, Journal Year: 2025, Volume and Issue: unknown, P. 120305 - 120305

Published: April 1, 2025

Language: Английский

Citations

0
Carbon Foam with In Situ Fe-Catalyzed Dense CNT@Graphite Core–Shell Fiber on Skeletons for High-Performance Radar-Infrared Stealth DOI
Yiman Lu, Chuan Liu, Xiaoning Zhao

et al.

ACS Applied Nano Materials, Journal Year: 2025, Volume and Issue: unknown

Published: April 10, 2025

Language: Английский

Citations

0
MOF-Derived Hollow Fe/FeN/C Heterogeneous Composites for Broad-Band and Efficient Microwave Absorption DOI

Shijiang Feng,

Rong Qiang,

Yulong Shao

et al.

Langmuir, Journal Year: 2025, Volume and Issue: unknown

Published: April 16, 2025

The construction of hollow structures and the incorporation metal nanoparticles have been shown to be two potential approaches achieving high-performance microwave absorption. In this study, a polyhedron material featuring an FeN/Fe-doped carbon matrix was synthesized by acidification corrosion pyrolysis strategy. formation heterojunctions, coupled with design structures, significantly improved dielectric loss capacity material. Furthermore, magnetic not only increased but also enriched mechanisms material, leading overall improvement in loss. Under synergistic effects these factors, exhibited exceptional absorption properties. particular, at thickness 2.3 mm, minimum reflection value FeN/Fe@HC nanocomposite reached -64.5 dB effective bandwidth 5.1 GHz. These results further highlight importance structure atom doping improving performance.

Language: Английский

Citations

0