Synthesis and multilayer hollow core-shell engineering of N-doped C@ZnFe2O4@polypyrrole microspheres with high performance microwave absorbing performance

被引：2

作者：

Shi, Yuxia ^{[1
]}

Zhao, Rui ^{[1
]}

Huang, Xiangxiang ^{[2
]}

Zhuang, Yingzan ^{[1
]}

Guo, Qin ^{[1
]}

Ma, Mingliang ^{[3
]}

Li, Tingxi ^{[1
]}

Ma, Yong ^{[1
]}

机构：

[1] Shandong Univ Sci & Technol, Sch Mat Sci & Engn, Qingdao 266590, Peoples R China

[2] Qingdao Hisense Hitachi Air conditioning Syst Co L, Qingdao, Peoples R China

[3] Qingdao Univ Technol, Sch Civil Engn, Qingdao 266033, Peoples R China

来源：

CHEMICAL ENGINEERING JOURNAL | 2025年 / 503卷

关键词：

N-doped C; Polypyrrole; Composites; Electromagnetic wave absorption; CONSTRUCTION; NANOPARTICLES; COMPOSITE;

D O I：

10.1016/j.cej.2024.158405

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Electromagnetic wave absorbers are materials that effectively absorb and attenuate electromagnetic waves, thereby reducing the impact of electromagnetic radiation on the environment and human health. In this study, doped C@ZnFe2O4@PPy (NCZP) composites are successfully synthesized with a hollow bilayer core-shell structure using a combination of the space-limited domain template method and the solvent-thermal method. This approach allowes for precise tuning of the composite's composition and microstructure. The multilayer hollow core-shell structure enhances loss capability and broadens the effective absorption bandwidth (EAB). The amorphous/crystalline interface between adjacent shell layers creates differential charge alignment regions that induce polarization relaxation. The synergistic impedance matching of magnetic media enables NCZP-2 exhibit strong absorption (3.3 mm,-63.02 dB) and a wide EAB (2 mm, 5.44 GHz). In addition, the next radar cross section (RCS) in actual far-field environment is simulated. The results indicate that the maximum RCS attenuation value of a PEC plate covered by NCZP-2 can reach-24.37 dBm2, demonstrating effective electromagnetic wave absorption, energy conversion, and promising radar wave attenuation performance for practical applications.

引用

页数：14