纳微快报（英文）2021，Vol.13Issue(5)：61-76,16.
Three-Dimensional Ordered Mesoporous Carbon Spheres Modified with Ultrafine Zinc Oxide Nanoparticles for Enhanced Microwave Absorption Properties
Three?Dimensional Ordered Mesoporous Carbon Spheres Modified with Ultrafine Zinc Oxide Nanoparticles for Enhanced Microwave Absorption Properties
摘要
Abstract
Currently, electromagnetic radiation and inter-ference 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) nano-particles (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 benefitsto 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.关键词
Three-dimensional ordered structure/Mesoporous carbon spheres/Zinc oxide nanoparticles/Microwave absorptionKey words
Three-dimensional ordered structure/Mesoporous carbon spheres/Zinc oxide nanoparticles/Microwave absorption引用本文复制引用
Yan Song,Fuxing Yin,Chengwei Zhang,Weibing Guo,Liying Han,Ye Yuan..Three-Dimensional Ordered Mesoporous Carbon Spheres Modified with Ultrafine Zinc Oxide Nanoparticles for Enhanced Microwave Absorption Properties[J].纳微快报（英文）,2021,13(5):61-76,16.基金项目
The authors are grateful of the financial support by the National Natural Science Foundation of China(51902083 and 21606068),the Foundation Strengthening Program(2019-JCJQ-142-00),and the Higher Education Science and Tech-nology Research Project of Hebei Province(ZD2019087). （51902083 and 21606068）
