Synthesis of graphene/α-Fe2O3 composites with excellent electromagnetic wave absorption properties

RSC Advances ◽  
2015 ◽  
Vol 5 (74) ◽  
pp. 60114-60120 ◽  
Author(s):  
Tihong Wang ◽  
Yongfeng Li ◽  
Lina Wang ◽  
Chao Liu ◽  
Sai Geng ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Electromagnetic Wave ◽  
Reduced Graphene Oxide ◽  
Three Dimensional ◽  
Absorption Properties ◽  
Electromagnetic Wave Absorption ◽  
Microwave Absorbing Properties ◽  
Wave Absorption ◽  
Reduced Graphene ◽  
Microwave Absorbing

Three-dimensional (3D) composites based on reduced graphene oxide (rGO) and porous Fe2O3 nanoparticles exhibit excellent microwave absorbing properties in the range of 2–16 GHz.

scholarly journals Reduced Graphene Oxide-Wrapped Super Dense Fe3O4 Nanoparticles with Enhanced Electromagnetic Wave Absorption Properties

Nanomaterials ◽  
2019 ◽  
Vol 9 (6) ◽  
pp. 845
Author(s):  
Qi Yu ◽  
Yiyi Wang ◽  
Ping Chen ◽  
Weicheng Nie ◽  
Hanlin Chen ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Electromagnetic Wave ◽  
Electron Microscope ◽  
Reduced Graphene Oxide ◽  
Fe3o4 Nanoparticles ◽  
Absorption Properties ◽  
Electromagnetic Wave Absorption ◽  
X Ray ◽  
Wave Absorption ◽  
Reduced Graphene

The efficient preparation of electromagnetic wave absorbing materials with low density and excellent electromagnetic wave absorption remains a considerable challenge. In this study, reduced graphene oxide (RGO) wrapped Fe3O4 nanoparticles (NPs) were synthesized based on one-step reaction by the reduction of graphene oxide (GO), and the generation of super-fine Fe3O4 NPs was achieved. The phase structure, chemical composition, micromorphology, and magnetism were characterized by X-ray diffraction (XRD), X-ray photoelectron spectroscope (XPS), scanning electron microscope (SEM), transmission electron microscope (TEM), and vibrating sample magnetometer (VSM), respectively. The electromagnetic characteristics were evaluated on a vector network analyzer by the coaxial line method. The results showed that super-fine Fe3O4 NPs with an average size of 6.18 nm are densely distributed on the surface of graphenes. The RGO/Fe3O4 nanocomposites exhibited excellent microwave absorption properties with a minimum reflection loss (RL) of up to −55.71 dB at 6.78 GHz at 3.5 mm thickness and the highest effective absorption bandwidth with RL values exceeding −10 dB is 4.76 GHz between 13.24 and 18 GHz at 1.7 mm thickness. This work provides a concise method for the development of RGO supported super dense Fe3O4 nanocomposites for high performance electromagnetic absorption applications.

Electromagnetic wave absorption properties of reduced graphene oxide encapsulated iron nanoparticles

2019 ◽  
Vol 253 ◽  
pp. 171-174
Author(s):  
Avanish Kumar Srivastava ◽  
Bhumika Samaria ◽  
Pourush Sharma ◽  
Virendra Singh Chauhan ◽  
Smita Soni ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Electromagnetic Wave ◽  
Reduced Graphene Oxide ◽  
Iron Nanoparticles ◽  
Absorption Properties ◽  
Electromagnetic Wave Absorption ◽  
Wave Absorption ◽  
Reduced Graphene

Broadband electromagnetic wave absorption properties and mechanism of MoS2/rGO nanocomposites

2021 ◽  
Author(s):  
Yi Ding ◽  
Xuan Zhao ◽  
Qi Li ◽  
Zheng Zhang ◽  
Zhuo Kang ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Electromagnetic Wave ◽  
Molybdenum Disulfide ◽  
Reduced Graphene Oxide ◽  
Dispersion Method ◽  
Ultrasonic Dispersion ◽  
Absorption Properties ◽  
Electromagnetic Wave Absorption ◽  
Wave Absorption ◽  
Reduced Graphene

Molybdenum disulfide/reduced graphene oxide (MoS2/rGO) nanocomposites are successfully prepared as enhanced electromagnetic wave absorber by a facile ultrasonic dispersion method. The electromagnetic parameters of MoS2/rGO nanocomposites are modulated to achieve...

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