溶剂热法制备Fe_3O_4/氧化石墨烯复合材料及其性能研究  

Solvothermal synthesis and performances of magnetite/reduced graphene oxide composites

作　　者：王旭珍[1,2] 周泉[2] 任素贞[1] 万鹏[2] 邱介山[2] 

机构地区：[1]大连理工大学化工与环境生命学部化学学院,辽宁大连116023 [2]大连理工大学化工与环境生命学部炭素材料研究室,能源材料化工辽宁省重点实验室暨精细化工国家重点实验室,辽宁大连116023

出　　处：《功能材料》2015年第3期3045-3049,共5页Journal of Functional Materials

基　　金：催化基础国家重点实验室开放课题资助项目(N-12-05)

摘　　要：以氧化石墨和二茂铁为原料,采用溶剂热法原位一步合成了Fe3O4/还原氧化石墨烯(Fe3O4/RGO)复合物,通过X射线衍射(XRD)、傅里叶变换红外光谱(FT-IR)、扫描电镜(SEM)、透射电镜(TEM)、振动样品磁强计(VSM)、循环伏安测试等手段对复合材料的形貌、结构、磁性能和电化学性能进行了表征。结果表明,该方法具有简单、可控的优点,通过调变前驱物中氧化石墨和二茂铁的比例,可以控制复合物中Fe3O4纳米粒子的负载量。所制备Fe3O4/RGO复合材料由平均粒径约20nm的Fe3O4纳米颗粒高度分散在还原氧化石墨烯片层上组成,具有较好的超顺磁性,电化学稳定性和良好的倍率性能。Fe3 O4 nanoparticles/reduced graphene oxide (Fe3 O4/RGO)composites were prepared via an in-situ solvothermal synthesis method using graphite oxide and ferrocene as precursors.The structure,morphology, magnetic property and electrochemical performance of the obtained Fe3 O4/RGO hybrids were investigated by X-ray diffraction (XRD),Fourier transform infrared (FT-IR)spectroscopy,scanning and transmission electron microscopy (SEM,TEM),vibrating sample magnetometry (VSM)and cyclic voltammetry test.The results show that magnetic nanoparticles with the average size of 20 nm are well dispersed on the surface of reduced graphene oxide sheets,and the loading amount of Fe3 O4 nanoparticles in the composites can be easily controlled by changing the ratio of ferrocene to graphite oxide in the reaction mixture.The Fe3 O4/RGO composite exhibits superparamagnetic property,as well as good electrochemical stability and rate capability.

关 键 词：FE3O4 还原氧化石墨烯 溶剂热 电化学性能 

分 类 号：O641[理学—物理化学]