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Updated: Aug 2, 2025
Biofunctionalized Prussian Blue Nanoparticles for Multimodal Molecular Imaging Applications
Published on: April 28, 2015
Enhanced electromagnetic wave absorption of Fe3O4@MnO2@Ni-Co/C composites derived from Prussian blue analogues
Huanhuan Wang1, Qi Qu1, Jiangshan Gao1
1College of Electromechanical Engineering, Shandong Engineering Laboratory for Preparation and Application of High-Performance Carbon Materials, Qingdao University of Science and Technology, Qingdao 266061, China. heyan@qust.edu.cn.
Abstract:
Herein, Fe3O4@MnO2@Ni-Co/C composites derived from PBAs were successfully fabricated. Firstly, Ni-Co Prussian blue analogues (Ni-Co PBAs) were used as precursors to derive a carbon layer on their surface by annealing treatment and subsequently translated into MnO2@Ni-Co/C nanocubes after hydrothermal reactions. Fe3O4@MnO2@Ni-Co/C composites were finally obtained after depositing Fe3O4 nanoparticles through the annealing process. Their electromagnetic wave (EMW) absorption performance apparently enhanced, thanks to the excellent impedance matching and strong attenuation derived from the synergy between the dielectric loss and the magnetic loss. In particular, the minimum reflection loss (RLmin) of Fe3O4@MnO2@Ni-Co/C reached -41.2 dB with a thickness of 4.0 mm and the effective absorption bandwidth (EAB) reached 7.1 GHz with a thickness of 2.0 mm. Therefore, the results could be significant for synthesizing EMW absorbers with excellent performance, a broad bandwidth, strong absorption, thin thickness and light weight.
