Facile preparation and enhanced microwave absorption properties of core–shell composite spheres composited of Ni cores and TiO2 shells

2015 ◽  
Vol 17 (14) ◽  
pp. 8802-8810 ◽  
Author(s):  
Biao Zhao ◽  
Gang Shao ◽  
Bingbing Fan ◽  
Wanyu Zhao ◽  
Yajun Xie ◽  
...  

The microwave absorption properties of the core–shell Ni@rutile TiO2 composite are superior to those of the Ni@anatase TiO2 composite.

2008 ◽  
Vol 320 (6) ◽  
pp. 1106-1111 ◽  
Author(s):  
B. Lu ◽  
X.L. Dong ◽  
H. Huang ◽  
X.F. Zhang ◽  
X.G. Zhu ◽  
...  

RSC Advances ◽  
2017 ◽  
Vol 7 (15) ◽  
pp. 9294-9302 ◽  
Author(s):  
Jiushuai Deng ◽  
Qibiao Wang ◽  
Yuanyuan Zhou ◽  
Biao Zhao ◽  
Rui Zhang

The Ni/ZnO composites show two wide attractive absorption bands, which could broaden the effective absorption bandwidth.


2015 ◽  
Vol 2015 ◽  
pp. 1-8 ◽  
Author(s):  
Hongyan Xu ◽  
Zhenyin Hai ◽  
Jiangtao Diwu ◽  
Qiang Zhang ◽  
Libo Gao ◽  
...  

The core-shell structured Co3O4-PANI nanocomposites have been successfully prepared using an in situ polymerization method, while the core Co3O4 nanoparticles were synthesized by carbon-assisted method using degreasing cotton as a template. The obtained samples were characterized by XRD, TEM, FTIR, and XPS. The results indicated that the amorphous PANI was well covered on the surface of the spinel Co3O4 and the Co3O4-PANI with core-shell structure was formed with particle size of about 100 nm. The interfacial interaction of the core-shell nanocomposite greatly enhances the microwave absorption properties. The maximum reflection loss of Co3O4-PANI is up to −45.8 dB at 11.7 GHz with a thickness of 2.5 mm and the adsorption bandwidth with the reflection loss below −10 dB reaches 14.1 GHz ranging from 3.9 to 18 GHz when the thickness is between 2 and 5.5 mm. Therefore, the facilely synthesized and low-cost Co3O4-PANI nanocomposite with superior microwave absorption properties can be a promising nanomaterial for high efficient microwave absorption.


2015 ◽  
Vol 17 (8) ◽  
pp. 6044-6052 ◽  
Author(s):  
Biao Zhao ◽  
Gang Shao ◽  
Bingbing Fan ◽  
Wanyu Zhao ◽  
Rui Zhang

The microwave absorption properties of a core–shell rice-like CuO-coated Ni composite are superior to those of pure Ni microspheres and CuO nanoflakes. The optimal reflection loss is −62.2 dB at 13.8 GHz.


RSC Advances ◽  
2014 ◽  
Vol 4 (105) ◽  
pp. 61219-61225 ◽  
Author(s):  
Biao Zhao ◽  
Gang Shao ◽  
Bingbing Fan ◽  
Wanyu Zhao ◽  
Yajun Xie ◽  
...  

The microwave absorption properties of ultrathin ZnS wall-coated Ni composites were superior to those of Ni microspheres and ZnS particles.


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