期刊
JOURNAL OF COLLOID AND INTERFACE SCIENCE
卷 505, 期 -, 页码 402-409出版社
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jcis.2017.05.116
关键词
Three-dimensional structure; B(OH)(3) and alpha-Fe2O3 nanoparticles; Carbon microspheres; Microwave absorption
资金
- National Natural Science Foundation of China [51102060, 51172050, 51302049, 51372052, 51672059]
- Postdoctoral Science Foundation of China [2013M531036]
- Shandong Province Young and Middle-Aged Scientists Research Awards Fund [BS2013CL003]
We demonstrate that novel three-dimensional (3D) B(OH)(3) and alpha-Fe2O3 nanoparticles decorated carbon microspheres (B(OH)(3)/alpha-Fe2O3-CMSs) can be fabricated via a facile thermal treatment process. The carbon microspheres with diameter of 1-3 mu m and decorated B(OH)(3) and alpha-Fe2O3 nanoparticles with diameters of several to tens of nanometers are successfully fabricated. These novel 3D B(OH)(3)/alpha-Fe2O3-CMS composites exhibit enhanced microwave absorption with tunable strong absorption wavebands in the frequency range of 2-18 GHz. They have a minimum reflection loss (RL) value of -52.69 dB at a thickness of 3.0 mm, and the effective absorption bandwidth for RL less than -10 dB is as large as 5.64 GHz. The enhanced microwave absorption performance arises from the synergy of the impedance matching caused by the B(OH)(3) nanoparticles, dielectric loss as well as the enhancement of multiple reflection among 3D alpha-Fe2O3 nanocrystals. These results provide a new strategy to tune electromagnetic properties and enhance the capacity of high-efficient microwave absorbers. (C) 2017 Elsevier Inc. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据