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化工进展  2015 

还原的氧化石墨烯/CoFe2O4的膜分散-水热法制备及其吸波性能

DOI: 10.16085/j.issn.1000-6613.2015.10.027, PP. 3693-3699

Keywords: 石墨烯,CoFe2O4,纳米粒子,复合材料,,电磁波吸收

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Abstract:

基于双膜分散技术与水热法相结合的思想,在较低温度条件下,短时间内合成了还原的氧化石墨烯(rGO)/CoFe2O4纳米复合材料,并研究了rGO/CoFe2O4的吸波性能。通过XRD、SEM、EDS、TEM、TG/DSC、IR测试手段对rGO/CoFe2O4进行表征,采用矢量网络分析仪测定了复合材料在2~18GHz范围内复介电常数和复磁导率的变化,并利用计算机模拟材料在不同厚度下电磁波的衰减性能。结果表明在透明绢丝状石墨烯的表面及边缘负载了粒度均匀的纳米CoFe2O4粒子;单一纳米CoFe2O4的反射率损耗为-3.59dB。而mCoFe2O4mGO为107的样品的吸波层厚度在2~3mm之间变化时,微波吸收效果显著增强,厚度为3mm时,出现最大微波衰减值-9.2dB,并且微波吸收峰随着吸波层厚度的增加而向低频移动。相比于单一纳米CoFe2O4粉体,rGO/CoFe2O4纳米复合材料对电磁波的吸收效果有了大幅度的提高。

References

[1]  Yeon H. Microwave absorbing properties of NiZn-ferrite synthesized from waste iron oxide catalyst[J]. Materials Letters,2006,60:3277-3280.
[2]  Giannakopoulou T,Kompotiatis L,Kontogeorgakos A,et al. Microwave behavior of ferrites prepared via sol-gel method[J]. Journal of Magnetism and Magnetic Materials,2002,246(3):360-365.
[3]  Ruan S P,Xu B K,Suo H,et al. Microwave absorptive behavior of ZnCo-substituted W-type Ba hexaferrite nanocrystalline composite material[J]. Journal of Magnetism and Magnetic Materials,2000,212(1-2):175-177.
[4]  Saini P,Choudhary V,Singh B P,et al. Polyaniline MWCNT nanocomposites for microwave absorption and EMI shielding[J]. Materials Chemistry and Physics,2009,113(2-3):919-926.
[5]  姚学标,胡国光,尹萍,等. 平面六角晶系铁氧体混合材料涂层的优良吸波特性[J]. 功能材料,2001,32(1):40-42.
[6]  Wang L X,Song J,Zhang O,et a1. The microwave magnetic performance of Sm3+ doped BaCo2Fe16O27[J]. Journal of Alloys and Compounds,2009,481(1/2):863-866.
[7]  王晨,康飞宇,顾家琳. 铁钴镍合金粒子/石墨薄片复合材料的制备与吸波性能研究[J]. 无机材料学报,2010,25(4):406-410.
[8]  张紫萍,刘秀军,李同起,等. 掺杂型石墨烯基纳米复合材料的研究进展[J]. 化工进展,2011,30(4):788-806. 浏览
[9]  吴婕.氧化石墨烯还原方法的研究进展[J]. 化工进展,2013,32(6):1352-1356.
[10]  Farghali A A,Bahgat M,ElRouby W M A,et al. Preparation,decoration and characterization of graphene sheets for methyl green adsorption[J]. Journal of Alloys and Compounds,2013,555:193-200.
[11]  Fu Y S,Chen H Q,Sun X Q,et al. Combination of cobalt ferrite and graphene:High-performance and recyclable visible-light photocatalysis[J]. Applied Catalysis B:Environmental,2012,111:280-287.
[12]  关晓辉,张东辉,张明媛,等. 基于膜分离技术的生物聚合铁的制备[J]. 化工学报,2008,59(10):2622-2626. 浏览
[13]  东北电力大学.一种中空纤维超滤膜双膜连续制备纳米四氧化三铁的方法及装置:中国, 201010105596.3[P].2010-07-14.
[14]  Yao Y J,Yang Z H,Zhang D W. Magnetic CoFe2O4-graphene hybrids:Facile synthesis,characterization,and catalytic properties[J]. Industrial & Engineering Chemistry Research,2012,51:6044-6051.
[15]  Ji Z,Shen X,Song Y,et al. In situ synthesis of graphene/cobalt nanocomposites and their magnetic properties[J]. Mater. Sci. Eng. B,2011,176:711-715.
[16]  Chen W F,Yan L F,Bangal P R. Preparation of graphene by the rapid and mild thermal reduction of graphene oxide induced by microwaves[J]. Carbon,2010,48(4):1146-1152.
[17]  Yavuz O,Ram M K,Aldissi M,et al. Synthesis and the physical properties of MnZn ferrite and NiMnZn ferrite-polyaniline nanocomposite particles[J]. J. Mater. Chem.,2005,15:810.
[18]  Xu C,Wang X,Zhu J,et al. Deposition of Co3O4 nanoparticles onto exfoliated graphite oxide sheets[J]. J. Mater. Chem.,2008,18:5625-5629.
[19]  吴小雨,李松梅,刘建华,等. CoFe2O4-石墨烯纳米复合材料的制备及微波吸收性能[J]. 无机化学学报,2014,29(8):845-850.

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