Self-template and in-situ synthesis strategy to construct MnO2/Mn3O4@Ni-Co/GC nanocubes for efficient microwave absorption properties

The porous and graphitized carbon-based materials prepared by sacrificing template and in situ reduction show an excellent microwave absorbing performance.

Download Full-text

Microwave Absorption Properties of BaFe12O19 Prepared in Different Temperature with Polyaniline Nanocomposites

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.1142.211 ◽

2017 ◽

Vol 1142 ◽

pp. 211-215 ◽

Cited By ~ 3

Author(s):

Wang Jun Feng ◽

Xing Zhao ◽

Wen Qian Zheng ◽

Jun Tao Gang ◽

Yue Cao ◽

...

Keyword(s):

Microwave Absorption ◽

Reflection Loss ◽

In Situ Polymerization ◽

Sol Gel ◽

Ftir Spectra ◽

Absorption Properties ◽

Microwave Absorption Properties ◽

Result Show ◽

Absorbing Material

The BaFe12O19 nanoparticles was prepared by sol-gel method in different temperature (750°C,850°Cand 950°C), and then BaFe12O19/polyaniline nanocomposites was synthesized by in situ polymerization. The XRD, FTIR spectra, SEM and vector network analyzer were used to analyze the "" chemical component, morphology and microwave absorption property of the nanocomposites. The result show that BaFe12O19 can be generated at 750°C without any impurity ,and its size increased with increase of calcination temperature.BaFe12O19 nanoparticle was coated with polyaniline partially, and we can get it have interaction with polyaniline through FTIR spectra. While the ferrite calcined at 850°C,the thickness of the absorbing material is 4.5mm,the nanocomposites have the largest reflection loss of-17.6 dB at 6 GHz,and its reflection loss values less than−10 dB in the range of 5-7.4GHz.

Download Full-text

Corrigendum to “Novel solvothermal preparation and enhanced microwave absorption properties of Ti2C3Tx MXene modified by in situ coated Fe3O4 nanoparticles” [Appl. Surf. Sci. 484 (2019) 383–391]

Applied Surface Science ◽

10.1016/j.apsusc.2020.148511 ◽

2021 ◽

Vol 544 ◽

pp. 148511

Author(s):

Xiang Zhang ◽

Hehe Wang ◽

Rui Hu ◽

Chenyang Huang ◽

Wengjin Zhong ◽

...

Keyword(s):

Microwave Absorption ◽

Fe3o4 Nanoparticles ◽

Absorption Properties ◽

Microwave Absorption Properties ◽

Solvothermal Preparation

Download Full-text

Facile Synthesis and Microwave-Absorption Properties of Organic–Inorganic CoFe2O4/Polyaniline Nanocomposites with Embedded Structure

Journal of Nanoscience and Nanotechnology ◽

10.1166/jnn.2020.17150 ◽

2020 ◽

Vol 20 (3) ◽

pp. 1756-1764 ◽

Cited By ~ 2

Author(s):

Peng Chen ◽

Lin-Wen Jiang ◽

Shan-Shan Yang ◽

Hong-Bing Chen ◽

Jun He ◽

...

Keyword(s):

Microwave Absorption ◽

Oxidative Polymerization ◽

Sol Gel ◽

Combustion Process ◽

Interfacial Polarization ◽

Absorption Properties ◽

Microwave Absorption Properties ◽

Auto Combustion ◽

Embedded Structure

Organic–inorganic CoFe2O4/polyaniline (CoFe2O4/PA) nanocomposites with embedded structures were synthesized by combining the sol–gel auto-combustion process and in-situ oxidative polymerization. The phases and morphologies of the prepared samples were identified. The pure CoFe2O4 samples exhibited inferior microwave-absorption properties in a frequency range of 2–18 GHz. Upon the incorporation of PA, the formed CoFe2O4/PA nanocomposites exhibited rather good absorption performances. When the sample thickness was 2.5 mm, the maximum reflection loss (RL) reached -22.3 dB, while the RL below -10 dB corresponded to the range of 11.0–17.1 GHz, which contains almost the entire Ku-band, making the structure promising for commercial and military applications. A physical model was employed to explain the effects of the embedded structure on the microwave-absorption performances. The excellent microwave-absorption performances could be attributed to the interfacial polarization and repeated reflection of the microwaves inside the CoFe2O4/PA composite.

Download Full-text