Article Title

Electromagnetic wave absorption in reduced graphene oxide functionalized with Fe₃O₄/Fe nanorings

Authors

Yi Ding, State Key Laboratory for Advanced Metals and Materials, School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China
Long Zhang, State Key Laboratory for Advanced Metals and Materials, School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China
Qingliang Liao, State Key Laboratory for Advanced Metals and Materials, School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China
Guangjie Zhang, State Key Laboratory for Advanced Metals and Materials, School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China
Shuo Liu, State Key Laboratory for Advanced Metals and Materials, School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China
Yue Zhang, State Key Laboratory for Advanced Metals and Materials, School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China Beijing Municipal Key Laboratory of New Energy Materials and Technologies, University of Science and Technology Beijing, Beijing 100083, China

Keywords

Fe3O4/Fe nanorings, reduced graphene oxide, X-ray diffraction, Raman spectrum, hydrothermal method

Abstract

We report the preparation of nanocomposites of reduced graphene oxide withembedded Fe3O4/Fe nanorings (FeNR@rGO) by chemical hydrothermal growth.We illustrate the use of these nanocomposites as novel electromagnetic waveabsorbing materials. The electromagnetic wave absorption properties of the nanocompositeswith different compositions were investigated. The preparationprocedure and nanocomposite composition were optimized to achieve the bestelectromagnetic wave absorption properties. Nanocomposites with a GO:α-Fe2O3mass ratio of 1:1 prepared by annealing in H2/Ar for 3 h exhibited the bestproperties. This nanocomposite sample (thickness = 4.0 mm) showed a minimumreflectivity of –23.09 dB at 9.16 GHz. The band range was 7.4–11.3 GHz whenthe reflectivity was less than –10 dB and the spectrum width was up to 3.9 GHz.These figures of merit are typically of the same order of magnitude whencompared to the values shown by traditional ferric oxide materials. However,FeNR@rGO can be readily applied as a microwave absorbing material becausethe production method we propose is highly compatible with mass productionstandards.

Graphical Abstract

DOI

https://doi.org/10.1007/s12274-016-1092-z

Publisher

Tsinghua University Press

Recommended Citation

Yi Ding,Long Zhang,Qingliang Liao,Guangjie Zhang,Shuo Liu,Yue Zhang, Electromagnetic wave absorption in reduced graphene oxide functionalized with Fe3O4/Fe nanorings. NanoRes.2016, 9(7): 2018, –2025