Modulating morphologies and electromagnetic wave absorption performances of 3d-4f PBA derivatives with transition metal ions

IF 10.5 2区材料科学 Q1 CHEMISTRY, PHYSICAL Carbon Pub Date : 2024-06-06 DOI:10.1016/j.carbon.2024.119315

Gang Li , Ruiyang Tan , Bohong Gao , Yuting Zhou , Chengcheng Zhang , Ping Chen , Xinyi Wang

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Abstract

Prussian blue analog (PBA) derivatives are widely utilized as high-performance electromagnetic wave absorption (EMWA) materials. Despite their potential, the specific impact of different metal ions on the morphology and EMWA performance of 3d-4f PBAs has remained unclear. Herein, using a coprecipitation method and different transition metal ions, we synthesized DyM(CN)₆ (M = Fe, Co) PBAs of different morphologies: six-petal flower-like structure for DyFe(CN)₆ and an elliptical seed shape for DyCo(CN)₆. Upon annealing, Dy₂O₃/Fe@CNT and Dy₂O₃/Co@CNT composites (CNT = carbon nanotube) maintaining their original shapes were prepared. The Dy₂O₃/Co@CNT composite, in particular, showed excellent EMWA properties with an RL_min of −48.32 dB at 15.44 GHz and an EAB of 5.68 GHz at an ultrathin thickness of only 1.75 mm. This performance is attributed to optimized impedance matching and synergistic magnetic-dielectric effects, along with interfacial polarization from Dy₂O₃, Co, and CNT interfaces. The simulated radar cross-section (RCS) confirms the excellent EMW attenuation capability of Dy₂O₃/Co@CNT and shows immense potential for practical application. This work offers a new approach to developing high-performance EMWA materials of 3d-4f PBA derivatives.

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用过渡金属离子调节 3d-4f PBA 衍生物的形态和电磁波吸收性能

普鲁士蓝类似物（PBA）衍生物被广泛用作高性能电磁波吸收（EMWA）材料。尽管普鲁士蓝具有很大的潜力，但不同金属离子对 3d-4f PBA 的形态和电磁波吸收性能的具体影响仍不清楚。在此，我们采用共沉淀法和不同的过渡金属离子，合成了不同形态的 DyM(CN)6 (M = Fe, Co) PBAs：DyFe(CN)6 为六瓣花状结构，DyCo(CN)6 为椭圆形种子形状。退火后，制备的 Dy2O3/Fe@CNT 和 Dy2O3/Co@CNT 复合材料（CNT = 碳纳米管）保持了原来的形状。特别是 Dy2O3/Co@CNT 复合材料，在 15.44 GHz 时的 RLmin 为 -48.32 dB，在厚度仅为 1.75 mm 的超薄材料上的 EAB 为 5.68 GHz，显示出卓越的 EMWA 性能。这一性能归功于优化的阻抗匹配和磁介质协同效应，以及来自 Dy2O3、Co 和 CNT 界面的界面极化。模拟雷达截面（RCS）证实了 Dy2O3/Co@CNT 卓越的电磁波衰减能力，并显示出巨大的实际应用潜力。这项工作为开发 3d-4f PBA 衍生物的高性能 EMWA 材料提供了一种新方法。

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来源期刊

Carbon 工程技术-材料科学：综合

CiteScore

20.80

自引率

7.30%

发文量

审稿时长

23 days

期刊介绍： The journal Carbon is an international multidisciplinary forum for communicating scientific advances in the field of carbon materials. It reports new findings related to the formation, structure, properties, behaviors, and technological applications of carbons. Carbons are a broad class of ordered or disordered solid phases composed primarily of elemental carbon, including but not limited to carbon black, carbon fibers and filaments, carbon nanotubes, diamond and diamond-like carbon, fullerenes, glassy carbon, graphite, graphene, graphene-oxide, porous carbons, pyrolytic carbon, and other sp2 and non-sp2 hybridized carbon systems. Carbon is the companion title to the open access journal Carbon Trends. Relevant application areas for carbon materials include biology and medicine, catalysis, electronic, optoelectronic, spintronic, high-frequency, and photonic devices, energy storage and conversion systems, environmental applications and water treatment, smart materials and systems, and structural and thermal applications.