One-Pot Synthesis of (NiFe2O4)x–(SrFe12O19)1−x Nanocomposites and Their Microwave Absorption Properties

2015 ◽  
Vol 15 (9) ◽  
pp. 6559-6567 ◽  
Author(s):  
Subhenjit Hazra ◽  
Barun Kumar Ghosh ◽  
Manoj Kumar Patra ◽  
Raj Kumar Jani ◽  
Sampat Raj Vadera ◽  
...  
Keyword(s):  
Microwave Absorption ◽  
Absorption Properties ◽  
One Pot ◽  
Microwave Absorption Properties ◽  
One Pot Synthesis

scholarly journals Facile preparation and excellent microwave absorption properties of an RGO/Co0.33Ni0.67 lightweight absorber

RSC Advances ◽  
2017 ◽  
Vol 7 (69) ◽  
pp. 43831-43838 ◽  
Author(s):  
Hai Pan ◽  
Mingzhen Xu ◽  
Qing Qi ◽  
Xiaobo Liu
Keyword(s):  
Microwave Absorption ◽  
Reduction Process ◽  
Thermal Reduction ◽  
Thermal Method ◽  
Absorption Properties ◽  
One Pot ◽  
Microwave Absorption Properties ◽  
Facile Preparation

A lightweight absorber with an ordered sandwich-like structure was fabricated using a simple one-pot solvent-thermal method and thermal reduction process.

scholarly journals Synthesis and Microwave Absorption Properties of Sulfur-Free Expanded Graphite/Fe3O4 Composites

Molecules ◽  
2020 ◽  
Vol 25 (13) ◽  
pp. 3044
Author(s):  
Jian Sun ◽  
Lijie Li ◽  
Rui Yu ◽  
Xianlong Ma ◽  
Shaohua Jin ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Microwave Absorption ◽  
Large Scale ◽  
Expanded Graphite ◽  
Raw Material ◽  
Precipitation Method ◽  
Absorption Properties ◽  
One Pot ◽  
Microwave Absorption Properties ◽  
X Ray

In this study, sulfur-free expanded graphite (EG) was obtained by using flake graphite as the raw material, and EG/Fe3O4 composites with excellent microwave absorption properties were prepared by a facile one-pot co-precipitation method. The structure and properties of as-prepared EG/Fe3O4 were investigated by scanning electron microscopy (SEM), transmission electron microscopy (TEM), Fourier transform infrared (FT-IR), X-ray diffraction (XRD), Raman, X-ray photoelectron spectrometry (XPS), thermogravimetric (TG), and vibrating sample magnetometry (VSM) characterizations. The Fe3O4 intercalated between the layers of expanded graphite forms a sandwich-like structure which is superparamagnetic and porous. When applied as a microwave absorber, the reflection loss (RL) of EG/Fe3O4 reaches −40.39 dB with a thickness of 3.0 mm (10 wt% loading), and the effective absorption bandwidth (EAB < −10 dB) with RL exceeding −10 dB is 4.76–17.66 GHz with the absorber thickness of 1.5–4.0 mm. Considering its non-toxicity, easy operation, low cost, suitability for large-scale industrial production, and excellent microwave absorbing performance, EG/Fe3O4 is expected to be a promising candidate for industrialized electromagnetic absorbing materials.

One-pot hydrothermal synthesis of RGO/CoFe 2 O 4 composite and its excellent microwave absorption properties

2014 ◽  
Vol 114 ◽  
pp. 52-55 ◽  
Author(s):  
Meng Zong ◽  
Ying Huang ◽  
Haiwei Wu ◽  
Yang Zhao ◽  
Qiufen Wang ◽  
...  
Keyword(s):  
Hydrothermal Synthesis ◽  
Microwave Absorption ◽  
Absorption Properties ◽  
One Pot ◽  
Microwave Absorption Properties

scholarly journals Facile synthesis of porous Fe3O4@C core/shell nanorod/graphene for improving microwave absorption properties

RSC Advances ◽  
2018 ◽  
Vol 8 (28) ◽  
pp. 15358-15365 ◽  
Author(s):  
Chen Fu ◽  
Dawei He ◽  
Yongsheng Wang ◽  
Xuan Zhao
Keyword(s):  
Microwave Absorption ◽  
Core Shell ◽  
Facile Synthesis ◽  
Absorption Properties ◽  
One Pot ◽  
Microwave Absorption Properties ◽  
Reduced Graphene ◽  
Absorption Performance ◽  
Microwave Absorption Performance ◽  
Maximum Reflection Loss

Porous Fe3O4@C core/shell nanorods decorated with reduced graphene oxide were synthesized by a facile one-pot method, and exhibit high microwave absorption performance: maximum reflection loss reaches −48.6 dB.

Preparation and Microwave Absorption Properties of LiZn Ferrite

2009 ◽  
Vol 25 (1) ◽  
pp. 73-76 ◽  
Author(s):  
Hong JIANG ◽  
Jia GUO ◽  
Lu ZHAO ◽  
Hong ZHU
Keyword(s):  
Microwave Absorption ◽  
Absorption Properties ◽  
Microwave Absorption Properties

scholarly journals Effect of Reaction Time on Microwave Absorption Properties of Fe3O4 Hollow Spheres Synthesized via Ostwald Ripening

Materials ◽  
2019 ◽  
Vol 12 (18) ◽  
pp. 2921 ◽  
Author(s):  
Wei Huang ◽  
Yujiang Wang ◽  
Shicheng Wei ◽  
Bo Wang ◽  
Yi Liang ◽  
...  
Keyword(s):  
Reaction Time ◽  
Microwave Absorption ◽  
Ostwald Ripening ◽  
Impedance Matching ◽  
Hollow Spheres ◽  
Absorption Properties ◽  
Microwave Absorption Properties ◽  
Magnetic Structures ◽  
Absorption Performance ◽  
Microwave Absorption Performance

Hollow magnetic structures have great potential to be used in the microwave absorbing field. Herein, Fe3O4 hollow spheres with different levels of hollowness were synthesized by the hydrothermal method under Ostwald ripening effect. In addition to their microstructures, the microwave absorption properties of such spheres were investigated. The results show that the grain size and hollowness of Fe3O4 hollow spheres both increase as the reaction time increases. With increasing hollowness, the attenuation ability of electromagnetic wave of Fe3O4 spheres increases first and then decreases, finally increases sharply after the spheres break down. Samples with strong attenuation ability can achieve good impedance matching, which it does preferentially as the absorber thickness increases. Fe3O4 hollow spheres show the best microwave absorption performance when the reaction time is 24 h. The minimum reflection loss (RL (min)) can reach −40 dB, while the thickness is only 3.2 mm.

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