ZIF-8衍生的ZnO与RGO复合材料的制备及其电磁波吸收性能  

Preparation and electromagnetic wave absorption properties of zeolitic imidazolate framework-8derived ZnO and reduced graphene oxide composites

作　　者：刘中飞[1,2] 袁江涛 金绍维[1,3] LIU Zhongfei;YUAN Jiangtao;JIN Shaowei(School of Physics and Materials Science,Anhui University,Anhui University Press,Anhui Key Laboratory of Information Materials and Devices,Anhui Universit)

机构地区：[1]安徽大学物理与材料科学学院,安徽合肥230601 [2]安徽大学出版社,安徽合肥230039 [3]安徽大学安徽省信息材料与器件重点实验室,安徽合肥230601

出　　处：《安徽大学学报（自然科学版）》2018年第3期66-70,共5页Journal of Anhui University(Natural Science Edition)

基　　金：国家自然科学基金资助项目(11174001);安徽大学2015级博士研究生学术创新研究项目

摘　　要：以ZIF-8与氧化石墨烯(GO)为前驱体,采用溶剂热法和碳化法得到ZnO/RGO复合材料.用X射线衍射、扫描电镜和透射电镜测试手段,对制备的ZnO/RGO复合材料的结构与物相进行表征,用矢量网络分析仪测量复合材料的电磁参数(复介电常数和复磁导率),通过反射损耗(RL)公式得到不同厚度样品的RL值.结果表明:煅烧温度为700℃的样品在2~18GHz具有良好的吸波性能;吸波层厚度为4mm、频率为17.2GHz时,RL小于等于-10dB的频率宽为1.0GHz(16.8~17.8GHz),此时的RL达到最小值-22.9dB.The authors used ZIF-8 and GO as raw materials.The MOFs-derived ZnO and RGO（ZnO/RGO）composites were prepared by the wet chemical method and carbonization process.The structure and phase of as-prepared products were analyzed by X-ray diffraction,scanning electron microscopy and transmission electron microscopy. Meanwhile,the electromagnetic parameters（complex permittivity and complex permeability）of ZnO/RGO composites were investigated by the vector network analyzer.The microwave absorption properties of the ZnO/RGO composites with different thicknesses were calculated and the results showed that the samples with the calcination temperature of 700 ℃ had good microwave absorbing performance in the frequency range of 2-18 GHz.It had a maximum absorption of-22.9 dB at 17.2 GHz and the effective absorption（below-10 dB）bandwidth was up to 1.0 GHz（from 16.8 GHz to 17.8 GHz）with thickness of 4 mm.

关 键 词：ZIF-8 ZnO/RGO 介电损耗 电磁波吸收 

分 类 号：TM25[一般工业技术—材料科学与工程] TB333[电气工程—电工理论与新技术]