Metal–Organic Gel Leading to Customized Magnetic-Coupling Engineering in Carbon Aerogels for Excellent Radar Stealth and Thermal Insulation Performances

Highlights Fe 3+ , Co 2+ , H 3 BTC, and collagen peptide are used to achieve a one-step assembly of stable FeCo-MOG/CP by manipulating the complexation effect and solution polarity. By optimizing pyrolysis, two kinds of nitrogen-doped carbon aerogels loaded with virus-shaped and nanospherical magnet...

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Vydáno v:Nano-micro letters Ročník 16; číslo 1; s. 42 - 17
Hlavní autoři: Li, Xin, Hu, Ruizhe, Xiong, Zhiqiang, Wang, Dan, Zhang, Zhixia, Liu, Chongbo, Zeng, Xiaojun, Chen, Dezhi, Che, Renchao, Nie, Xuliang
Médium: Journal Article
Jazyk:angličtina
Vydáno: Singapore Springer Nature Singapore 01.12.2024
Springer Nature B.V
SpringerOpen
Témata:
Aerogels
Aircraft performance
Carbon
Chemical composition
Cobalt
Collagen
Complexation
Computer simulation
Computer simulation technology
Coupling
Electromagnetic radiation
Engineering
Heterometallic magnetic coupling
Homogeneity
Insulation
Iron oxides
Kirkendall effect
Magnetic properties
Metal–organic gels
Microwave absorption
Multifunctional materials
Nanoscale Science and Technology
Nanotechnology
Nanotechnology and Microengineering
Nitrogen
Peptides
Physical properties
Polarity
Pyrolysis
Radar
Radar stealth
Stealth technology
Thermal insulation
Thermal treatment materials
Viruses
Metal–organic gels
Computer simulation technology
Radar stealth
Thermal insulation
Heterometallic magnetic coupling
ISSN:2311-6706, 2150-5551, 2150-5551
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Shrnutí:Highlights Fe 3+ , Co 2+ , H 3 BTC, and collagen peptide are used to achieve a one-step assembly of stable FeCo-MOG/CP by manipulating the complexation effect and solution polarity. By optimizing pyrolysis, two kinds of nitrogen-doped carbon aerogels loaded with virus-shaped and nanospherical magnetic particles are obtained. FeCo/Fe 3 O 4 /NC and FeCo/NC aerogels exhibit excellent electromagnetic wave absorbing and radar stealth performances. Metal–organic gel (MOG) derived composites are promising multi-functional materials due to their alterable composition, identifiable chemical homogeneity, tunable shape, and porous structure. Herein, stable metal–organic hydrogels are prepared by regulating the complexation effect, solution polarity and curing speed. Meanwhile, collagen peptide is used to facilitate the fabrication of a porous aerogel with excellent physical properties as well as the homogeneous dispersion of magnetic particles during calcination. Subsequently, two kinds of heterometallic magnetic coupling systems are obtained through the application of Kirkendall effect. FeCo/nitrogen-doped carbon (NC) aerogel demonstrates an ultra-strong microwave absorption of − 85 dB at an ultra-low loading of 5%. After reducing the time taken by atom shifting, a FeCo/Fe 3 O 4 /NC aerogel containing virus-shaped particles is obtained, which achieves an ultra-broad absorption of 7.44 GHz at an ultra-thin thickness of 1.59 mm due to the coupling effect offered by dual-soft-magnetic particles. Furthermore, both aerogels show excellent thermal insulation property, and their outstanding radar stealth performances in J-20 aircraft are confirmed by computer simulation technology. The formation mechanism of MOG is also discussed along with the thermal insulation and electromagnetic wave absorption mechanism of the aerogels, which will enable the development and application of novel and lightweight stealth coatings.
Bibliografie:ObjectType-Article-1
SourceType-Scholarly Journals-1
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ISSN:2311-6706
2150-5551
2150-5551
DOI:10.1007/s40820-023-01255-7