材料科学
碳纳米管
微波食品加热
吸收(声学)
极化(电化学)
复合材料
化学工程
异质结
纳米技术
光电子学
化学
计算机科学
物理化学
电信
工程类
作者
Tianming Jia,Xiaosi Qi,Lei Wang,Jingliang Yang,Xiu Gong,Yanli Chen,Yunpeng Qu,Qiong Peng,Wei Zhong
出处
期刊:Carbon
[Elsevier]
日期:2023-02-25
卷期号:206: 364-374
被引量:93
标识
DOI:10.1016/j.carbon.2023.02.046
摘要
Taking full advantage of interface engineering to strengthen interface polarization is an effective strategy to improve microwave absorption. Therefore, constructing the mixed-dimensional heterostructures and/or three-dimensional (3D) interconnected network structures should be attractive pathways to create the abundant interfaces for enhanced interfacial effect. Herein, mixed-dimensional framework structure carbon foam (CF)/carbon nanotubes (CNTs)@Fe3[email protected]3O4 samples consisting of 3D CF, one-dimensional (1D) CNTs and zero-dimensional (0D) Fe3[email protected]3O4 nanoparticles were elaborately designed and produced through a simple catalytic chemical vapor deposition process. The as-prepared CF/[email protected]3[email protected]3O4 heterostructures with the different contents of CNTs could be selectively produced by regulating the pyrolysis time. Owing to the unique structure and excellent synergistic effects, the obtained mixed-dimensional CF/[email protected]3[email protected]3O4 samples presented the excellent comprehensive electromagnetic wave absorption performances (EMWAPs) including strong absorption capabilities, broad absorption bandwidths, thin matching thicknesses and low densities. Furthermore, the obtained results demonstrated that the enhanced content of CNTs greatly boosted their conduction and polarization loss abilities, which resulted in the enhanced comprehensive EMWAPs. Therefore, our findings not only offered a simple strategy to produce the mixed-dimensional framework structure magnetic CF/CNTs-based heterostructures as excellent lightweight high-efficiency microwave absorbers, but also provided an effective pathway to make the best of interface engineering for enhancing interface polarization.
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