Abstract
The development of carbon materials with unique nanostructure and appropriate magnetism is of great importance in design of high-performance microwaves absorption materials. In this work, we provide a convenient strategy for one-step synthesis of a bamboo-shaped magnetic N-doped carbon nanotube (BMN-CNT) via a nickel (Ni)-assisted pyrolysis process. During synthetic process, Ni nanoparticles form and play as a catalyst for the catalytic calcination of melamine. The BMN-CNT exhibits excellent microwaves absorption performance, where the maximal reaches − 19 dB. A model referring to multi-polarization, internal reflection, and magnetic loss is used to explain the dissipation mechanism of BMN-CNT on microwaves. This research opens up the exploration of novel magnetic carbon nanostructures for MA applications.
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