Electromagnetic and microwave-absorbing properties of highly ordered mesoporous carbon supported by gold nanoparticles

2012 ◽  
Vol 133 (2-3) ◽  
pp. 965-970 ◽  
Author(s):  
Hongjing Wu ◽  
Liuding Wang ◽  
Shaoli Guo ◽  
Yiming Wang ◽  
Zhongyuan Shen
Keyword(s):  
Gold Nanoparticles ◽  
Mesoporous Carbon ◽  
Ordered Mesoporous Carbon ◽  
Microwave Absorbing Properties ◽  
Ordered Mesoporous ◽  
Microwave Absorbing

scholarly journals Three-Dimensional Ordered Mesoporous Carbon Spheres Modified with Ultrafine Zinc Oxide Nanoparticles for Enhanced Microwave Absorption Properties

2021 ◽  
Vol 13 (1) ◽  
Author(s):  
Yan Song ◽  
Fuxing Yin ◽  
Chengwei Zhang ◽  
Weibing Guo ◽  
Liying Han ◽  
...  
Keyword(s):  
Zinc Oxide ◽  
Mesoporous Carbon ◽  
Three Dimensional ◽  
Ordered Mesoporous Carbon ◽  
Material Research ◽  
Carbon Spheres ◽  
Zno Nps ◽  
Ordered Mesoporous ◽  
High Efficient ◽  
Microwave Absorbing

AbstractCurrently, electromagnetic radiation and interference have a significant effect on the operation of electronic devices and human health systems. Thus, developing excellent microwave absorbers have a huge significance in the material research field. Herein, a kind of ultrafine zinc oxide (ZnO) nanoparticles (NPs) supported on three-dimensional (3D) ordered mesoporous carbon spheres (ZnO/OMCS) is prepared from silica inverse opal by using phenolic resol precursor as carbon source. The prepared lightweight ZnO/OMCS nanocomposites exhibit 3D ordered carbon sphere array and highly dispersed ultrafine ZnO NPs on the mesoporous cell walls of carbon spheres. ZnO/OMCS-30 shows microwave absorbing ability with a strong absorption (− 39.3 dB at 10.4 GHz with a small thickness of 2 mm) and a broad effective absorption bandwidth (9.1 GHz). The outstanding microwave absorbing ability benefits to the well-dispersed ultrafine ZnO NPs and the 3D ordered mesoporous carbon spheres structure. This work opened up a unique way for developing lightweight and high-efficient carbon-based microwave absorbing materials.

Sign in / Sign up

Export Citation Format

Share Document