Fe/膨胀石墨插层复合物的简易制备与电磁特性研究  

Facile preparation and electromagnetic characteristics of Fe/expanded graphite intercalation compounds

作　　者：童国秀[1] 袁进好[1] 马吉[1] 秦明月[1] 官建国[1] 李良超[1] 宫培军[1] 蔡建静[1] 

机构地区：[1]浙江师范大学化学与生命科学学院,金华321004

出　　处：《中国科学：化学》2011年第7期1121-1126,共6页SCIENTIA SINICA Chimica

基　　金：浙江省自然基金(Y4100022&Y4100074);金华市科技计划项目(2010A12066);浙江省新苗人才计划;浙江师范大学博士启动基金(ZC304009094);浙江师范大学实验室开放项目;第十二期课题浙江师范大学实验室开放项目的资助

摘　　要：以膨胀石墨和硫酸亚铁为前驱物,采用一步还原法得到Fe/膨胀石墨(Fe/EG)插层复合物.并用SEM、XRD、网络矢量分析仪等测试仪器分别研究了Fe含量(wFe)对Fe/EG插层复合物的形貌、结构、微波电磁和吸波性能的影响.结果表明:改变插层剂Fe的含量能有效地调控Fe/EG插层复合物的微波电磁与吸收特性.随wFe在27.5wt%～71.5wt%范围内增大,Fe/EG插层复合物的介电常数在wFe=27.5wt%时达到最大值,磁导率呈现多重共振现象,微波吸收性能逐渐增强.这种优异的微波吸收特性归功于Fe/EG插层复合物增强的电磁匹配和磁共振损耗.Using expanded graphite and FeSO4 as precursor,Fe/expanded graphite （Fe/EG） intercalation compounds were prepared by a facile one-step reduction approach.The influences of Fe nanoparticles content wFe on the morphology,structure,and microwave electromagnetic and absorbing properties of the corresponding intercalation compounds were studied by SEM,XRD,and network vector analyzer,respectively.The results showed that the change of wFe could effectively tune the microwave electromagnetic and absorbing characteristics.As the wFe was increased from 27.5 wt% to 71.5 wt%,Fe/EG intercalation compounds showed a maximal permittivity at wFe =27.5 wt%,the permeability with a multiresonant behavior,and the gradually increasing microwave absorbing properties.The excellent microwave-absorption properties of Fe/EG intercalation compounds are as a consequence of a proper electromagnetic matching and enhanced magnetic resonant loss.

关 键 词：铁 膨胀石墨 插层复合物 电磁特性 

分 类 号：O613.71[理学—无机化学]