引发剂用量对氧化石墨烯吸波性能研究
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摘要
以天然鳞片石墨为原料,改进Hummers法制备氧化石墨烯(GO)。采用X射线衍射(XRD)、扫描电子显微镜(SEM)、红外光谱(FTIR)、拉曼光谱(Raman)和矢量网络分析仪(VNA)研究了引发剂(过硫酸钾)的用量对GO形貌、结构、氧化程度、电磁损耗特性、德拜弛豫模型及吸波性能的影响。结果表明:过硫酸钾添加量为10 g,含氧官能团的含量增加,层状结构产生缺陷,层间距为0.90 nm,介电常数和磁导率均较高,在14~18 GHz之间损耗因子达到最大值,为1.07。在17.83 GHz时,反射率达到-34.28 dB,吸波性能最优异。
Graphene oxide was prepared by Hummers methods using natural flake graphite. The structure,morphology, degree of oxidation, electromagnetic loss properties, Debye relaxation and microwave absorbing properties of graphene oxide( GO) were investigated by X-ray diffraction( XRD),Raman spectrometer,scanning electron microscope( SEM),infrared spectrometer( FTIR) and Vector network analyzer( VNA). The results shows that the amount of evocating agent( potassium peroxydisulfate) is 10 g. Increasing the content of oxygen-functional groups and layered structural defects,the layer spacing is 0. 90 nm. The permittivity and permeability are higher,when the loss factor is between 14-18 GHz. The maximum value is 1. 07. At 17. 83 GHz,the reflectivity is -34. 28 dB. It has the best microwave absorbing properties.
Graphene oxide was prepared by Hummers methods using natural flake graphite. The structure,morphology, degree of oxidation, electromagnetic loss properties, Debye relaxation and microwave absorbing properties of graphene oxide( GO) were investigated by X-ray diffraction( XRD),Raman spectrometer,scanning electron microscope( SEM),infrared spectrometer( FTIR) and Vector network analyzer( VNA). The results shows that the amount of evocating agent( potassium peroxydisulfate) is 10 g. Increasing the content of oxygen-functional groups and layered structural defects,the layer spacing is 0. 90 nm. The permittivity and permeability are higher,when the loss factor is between 14-18 GHz. The maximum value is 1. 07. At 17. 83 GHz,the reflectivity is -34. 28 dB. It has the best microwave absorbing properties.
引文
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[33]Hummers W S,Offeman R E.Preparation of Graphitic Oxide[J].Journal of the American Chemical Society,1958,80(6):1339.
[34]Kovtyukhova N I,Ollivier P J.Layer-by-layer Assembly of Ultrathin Composite Films From Micron-sized Graphite Oxide Sheets and Polycations[J].Chemical Materials,1999,11(3):71-78.
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[37]KONG L,YIN X,YUAN X,et al.Electromagnetic Wave Absorption Properties of Graphene Modified with Carbon Nanotube/poly(dimethyl siloxane)Composites.Carbon,2014,73:185-193.
[38]TIANJIAO B,YAN Z,XIAOFENG S,et al.A Atudy of the Electromagnetic Properties of Cobalt-multiwalled Carbon Nanotubes(Co-MWCNTs)Composites[J].Materials Science and Engineering:B,2011,176(12):906-912.
[2]Novoselov K S,Geim A K,Morozov S V,et al.Electric Field Effect in Atomically Thin Carbon Films[J].Science,2004,306:666-669.
[3]Peierls R E.Quelques Proprietes Typiques Des Corpses Solides[J].Annales de L'institute Henri Poincaré,Probabilités et Staistiques,1935,5:177-222.
[4]Landau L D.Zur Theorie der phasenumwandlungenⅡ[J].Physikalische Zeitschrift Der Sowjetunion,1937,11:26-35.
[5]Geim A K.Graphene:Status and Prospects[J].Science,2009.6.19,324:1529-1534.
[6]Balandin A A,Ghosh S,Bao W,et al.Superior Thermal Conductivity of Single-layer Grapheme[J].Nano Lett.,2008,8(3):902-907.
[7]Rafiee M A,Lu W,Thomas A,et al.Graphene Nanoribbon Composites[J].ACS Nano,2010,4(12):7415-7420.
[8]Lee C,Wei X,Kysar J W,et al.Measurement of the Elastic Properties and Intrinsic Strength of Monolayer Graphene[J].Science,2008,321(5887):385-388
[9]Shah J,Kotnala R K,Singh B,et al.Microstructure-dependent Humidity Sensitivity of Porous Mg Fe2O4-Ce O2Ceramic[J].Sensors and Actuators B:Chemical,2007,128:306-311.
[10]王培草,孙红娟,彭同江.氧化程度对氧化石墨烯a-b轴结构及电学性能的影响[J].无机化学学报,2015,2,31(2):275-281.
[11]Lerf A,He H,Forster M,et al.Structure of Graphite Oxide Revisited[J].J.Phys.Chem.,1998,102(23):4477-4482.
[12]姜婷.基于氧化石墨烯和石墨烯的复合凝胶的制备、表征及其应用[D].北京:北京理工大学,2015,1.
[13]Yuan B Q,Yu L M,Sheng L M,et al.Comparison of Electromagnetic Interference Shielding Properties Between Single-wall Carbon Anotube and Graphene Sheet/Polyaniline Composites[J]Journal of Physics D-Applied Physics,2012,45(23)6705-6711.
[14]Chen D,Feng H,Li J.Graphene Oxide:Preparation,Functionalization,and Electrochemical Applications[J].Chemical Reviews,2012,112(11):6027-6053.
[15]Sukanta Das,Ganesh Chandra Nayak,S K Sahu.Ramesh Oraon,Development of Fe Co B/Graphene Oxide Based Microwave Absorbing Materials for X-Band Region[J].Journal of Magnetic Materials,2015:224-228.
[16]Zong M,Huang Y,Zhao Y,et al.One-pot Simplified Co-precipitation Synthesis of Reduced Graphene Oxide/Fe3O4Composite and Its Microwave Electromagnetic Properties[J].Materials Letters,2013,106:22-25.
[17]张燚,陈彪,杨祖培,等.Fe3O4磁性纳米粒子-氧化石墨烯复合材料的可控制备及结构与性能表征[J].物理化学学报,2011,27(5):1261-1266.
[18]徐双双,陈功,张海琴,等.Ni-RGO纳米吸波材料的制备及其电磁行为研究[J].无机材料学报,2016,31(6):567-574.
[19]Zong M.,Huang Y.,Ding X.,et al.One-step Hydrothermal Synthesis and Microwave Electromagnetic Properties of RGP/Ni Fe2O4 Composite[J].Ceramics International,2014,40(5):6821-6828.
[20]Liu P B,Huang Y.Synthesis of Reduced Graphene Oxide-conducting Polymers-Co3O4Composites and Their Excellent Microwave Absorption Properties[J].Rsc Advances,2013,3(41):19033-19039.
[21]Wang C,Han X,Xu P,et al.The Electromagnetic Property of Chemically Reduced Graphene Oxide and Its Application as Microwave Absorbing Material[J].Applied Physics Lerrers,2011,98(7):975-980.
[22]Li Guo,Xianglu Yin,Wei Wu,et al.Preparation of Grapheme via Liquid-phase Exfoliation with High Gravity Technology from Edge-oxidized Graphite[J].Colloids and Surfaces A:Physicochem.Eng.Aspects.2017.7(531):25-31
[23]Du X,SKACHKO I,BARKER A,et al.Approaching Ballistic Transport in Suspended Graphene[J].Nature nanotechnology,2008,3(8):491-495.
[24]Wei D,ASTLEY M R,HARRIS N,et al.Graphene Nanoarchitecture in Batteries[J].Nanoscale,2014,6(16):9536-9540.
[25]David L,Bhandavat R,Singh G.Mo S2/graphene Composite Paper for Sodium-ion Battery Electrodes[J].ACS Nano,2014,8(2):1759-1770.
[26]Mao S,Wen Z,Ci S,et al.Hydrogen Evolution:Perpendicularly Oriented Mo Se2/graphene Nanosheets as Advanced Electrocatalysts for Hydrogen Evolution[J].Small,2015,11(4):508.
[27]Wang Y,Yu J,Xiao W,et al.Microwave-assisted Hydrothermal Synthesis of Graphene Based Au-Ti O2Photocataly for Efficient Visible-light Hydrogen Production[J].Journal of Materials Chemistry A,2014,2(11):3847-3855.
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[29]Sun X,He J,Li G,et al.Laminated Magnetic Graphene with Enhanced Electromagnetic Wave Absorption Properties[J].Journal of Materials Chemistry C,2013,1(4):765-777.
[30]Victor V.Ilyasov,B.Ch.Meshi,I.Popova,et al.First-principles Study of the Structural and Electronic Properties of Graphene Absorbed on Mn O(111)Surfaces[J].Computational and Theoretical Chemistry,2016,12(1098):22-30.
[31]Zhang X J,Wang G S,Cao W Q,et al.Enhanced Microwave Absorption Property of Redeced Graphene Oxide(RGO)-Mn Fe2O4Nanocomposites and Polyvinylidene Fluoride[J].ACS Appl.Mater.Interfaces,2014,6(10):7471-7478.
[32]Ying H,Xiao D,Suping Li,et al.Magnetic Reduced Graphene Oxide Nanocomposite as an Effective Electromagnetic Wave Absorber and Its Absorbing Mechanism[J].Ceramics International,2016,11(42):17116-17122.
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[36]Stankovich S,Dikin D A,Piner R D,Synthesis of Graphene-based Nanosheets via Chemical Reduction of Exfoliated Graphite Oxide[J].Carbon,45(2007):1558-1565.
[37]KONG L,YIN X,YUAN X,et al.Electromagnetic Wave Absorption Properties of Graphene Modified with Carbon Nanotube/poly(dimethyl siloxane)Composites.Carbon,2014,73:185-193.
[38]TIANJIAO B,YAN Z,XIAOFENG S,et al.A Atudy of the Electromagnetic Properties of Cobalt-multiwalled Carbon Nanotubes(Co-MWCNTs)Composites[J].Materials Science and Engineering:B,2011,176(12):906-912.