Rose-Derived Porous Carbon and In-Situ Fabrication of Cobalt/Nickel Nanoparticles Composites as High-Performance Electromagnetic Wave Absorber

Wentao Yu1

Ziqing Wang1

Jiahui Lin1

Yongshuang Xiao1

Liying Zhu1

Jintao Huang1,Email

Aricson Pereira2

Zhanhu Guo3,Email

Yonggang Min1,Email

1School of Materials and Energy, Guangdong University of Technology, Guangzhou 510006, China.
2Engineered Multifunctional composites (EMC) nanotech LLC, Knoxville, TN,37996, United states.
3Department of Mechanical and Civil Engineering, Faculty of Engineering and Environment, Northumbria University, Newcastle Upon Tyne NE1 8ST, UK.

Abstract

Rose-derived porous carbon and Cobalt(Co)/Nickel(Ni) nanoparticles composite absorbers (RC/Co and RC/Ni) were synthesized adopting a simple impregnation method and one-step carbonization method. The special array structure on the surface of rose petals remains intact even after carbonization, and the wrinkles and porous structure inside serves to reduce the material’s density and increase the number of interfaces. Besides, the in Situ Fabricated Co and Ni magnetic nanoparticles were employed to introduce magnetic loss ability. At a matching thickness of 1.58 mm, RC/Co exhibits a minimum reflection loss (RLmin) of -47.89 dB at 13.60 GHz and an effective attenuation bandwidth (EABW) of 4.08 GHz, while RC/Ni achieves a RLmin value of -45.36 dB at 12.88 GHz and an EABW of 3.02 GHz at thickness of 1.56 mm. Due to the low-cost biomass materials and simple preparation methods, RC/Co and RC/Ni could serve as a model for synthesizing other high-performance absorbers due to their environmental friendliness, convenience of synthesis, and good EMW attenuation capability.

Rose-Derived Porous Carbon and In-Situ Fabrication of Cobalt/Nickel Nanoparticles Composites as High-Performance Electromagnetic Wave Absorber