Abstract
In this work, we demonstrated a simple method for preparing three-dimensional interconnected carbon nanofibers (ICNF) derived from fish bone as an efficient and lightweight microwave absorber. The as-obtained ICNF exhibits excellent microwave absorption performance with a maximum reflection loss of –59.2 dB at the filler content of 15 wt%. In addition, the effective absorption bandwidth can reach 4.96 GHz at the thickness of 2 mm. The outstanding microwave absorption properties can be mainly ascribed to its well-defined interconnected nanofibers architecture and the doping of nitrogen atoms, which are also better than most of the reported carbon-based absorbents. This work paves an attractive way for the design and fabrication of highly efficient and lightweight electromagnetic wave absorbers.
Highlights
With the rapid development of electronic technology, the problem of electromagnetic radiation pollution has become prominent and cannot be ignored [1, 2]
The typical process of synthesizing interconnected carbon nanofibers (ICNF) from fish bone is as follows. 10 g of fish bone powders was added into 80 mL of deionized water and stirred for 30 min at room temperature
The microwave absorption properties of the synthesized sample ICNF were measured by a vector network analyzer (Agilent N5071C, USA) in the frequency range of 2–18 GHz
Summary
With the rapid development of electronic technology, the problem of electromagnetic radiation pollution has become prominent and cannot be ignored [1, 2]. Zhang et al prepared the MoS2-RGO composite by a one-step hydrothermal method, which exhibited strong microwave absorption properties [10]. Despite those advantages, the fabrication route is complicated and expensive, which constrains their scalable applications. The as-obtained ICNF exhibits excellent microwave absorption performance, and the minimum reflection loss is as high as –59.2 dB at 7.92 Hz with a low filler percent of 15 wt%. These encouraging performances indicate that the as-prepared sample ICNF has great potential as an efficient and lightweight electromagnetic wave absorber. Wax and pressed into a toroidal ring with the thickness of 2 mm, outer diameter of 7 mm, and inner diameter of 3.04 mm, respectively
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