通过FeCl2·4H2O和FeCl3·6H2O混合共沉淀,合成平均粒径为6nm和10 nm的Fe3O4纳米粒子.然后将两种Fe3O4纳米粒子分别与经HNO3氧化处理的多壁碳纳米管(MWCNTs)置于乙醇水溶液(水和乙醇的体积比为1∶1)中,在超声波作用下制备Fe3O4/MWCNT复合材料.用高分辨透射电子显微镜、X-射线光电子能谱、振动样品磁强计、X射线衍射仪、热重分析仪对所制备的Fe3O4/MWCNT复合材料进行表征.结果表明:由6nm和10 nm Fe3O纳米粒子所制备的Fe3O4/MWCNT复合材料中,Fe3O4的质量分数分别为26.65％和29.3％,相应的磁饱和强度分别为16.5 emug-1和7.5emug-1.
Iron oxide ( Fe3O4 ) nanoparticles with average sizes of 6 and 10 nm were synthesized by a chemical co-precipitation method from mixtures of FeCl2·4H2O and FeCl3·6H2O.They were ultrasonicated with HNO3-oxidized MWCNTs in a solution (water/ethanol =1 ∶lv/v) to carry out the decoration.The structure and properties of as-obtained Fe3O4/MWCNT composites were characterized by transmission electron microscopy,X-ray photoelectron spectroscopy,vibrating sample magnetometry,X-ray diffraction and thermal gravimetry.Results showed that the Fe3O4 mass fraction in the composites were 26.6 and 29.3 ％ for particle sizes of 6 and 10nm,and their saturation magnetizations were 16.5 and 7.5 emu·g-1 respectively.
参考文献
| [1] | Jiaqi Wan;Wei Cai;Jiangtao Feng .In situ decoration of carbon nanotubes with nearly monodisperse magnetite nanoparticles in liquid polyols[J].Journal of Materials Chemistry: An Interdisciplinary Journal dealing with Synthesis, Structures, Properties and Applications of Materials, Particulary Those Associated with Advanced Technology,2007(12):1188-1192. |
| [2] | Liu Z;Wang J;Xie D H et al.Polyaniline-coated Fe3O4 nanoparticle-carbon nanotube composite and its application in electrochemical biosensing[J].Small,2008,4:462-466. |
| [3] | Li Y W;Yin Z L;Yao J H et al.Electrochemical performance of nickel hydroxide doped with multi-wall carbon nanotubes[J].Transactions of Nonferrous Metals Society of China,2010,20:s249-s252. |
| [4] | Shaoqing Song;Hongxiao Yang;Richuan Rao .High catalytic activity and selectivity for hydroxylation of benzene to phenol over multi-walled carbon nanotubes supported Fe3O4 catalyst[J].Applied Catalysis, A. General: An International Journal Devoted to Catalytic Science and Its Applications,2010(2):265-271. |
| [5] | 蒋峰景,浦鸿汀,杨正龙,殷俊林.Fe3O4包覆碳纳米管软磁性纳米复合微粒的制备及性能[J].新型炭材料,2007(04):371-374. |
| [6] | Liu Y;Jiang W;Li S et al.Electrostatic self-assembly of Fe3O4 nanoparticles on carbon nanotubes[J].Applied Surface Science,2009,255:7999-8002. |
| [7] | Xuzhen Wang;ZongbinZhao;JiangyingQu;ZhiyuWang;JieshanQiu .FabricationandcharacterizationofmagneticFe3O4–CNT composites[J].The journal of physics and chemistry of solids,2010(4):673-676. |
| [8] | Zhou, H.;Zhang, C.;Li, H.;Du, Z. .Decoration of Fe_3O_4 nanoparticles on the surface of poly(acrylic acid) functionalized multi-walled carbon nanotubes by covalent bonding[J].Journal of Polymer Science, Part A. Polymer Chemistry,2010(21):4697-4703. |
| [9] | Dong C K;Li X;Zhang Y et al.Fe3O4 nanoparticles decorated multi-walled caroon nanotubes and their sorption properties[J].Chem Res Chin Univer,2009,25(06):936-940. |
| [10] | Massart R .Preparation of aqueous magnetic liquids in alkaline and acidic media[J].IEEE Transactions on Magnetics,1981,17:1247-1248. |
| [11] | Giersig M;Hilgendorff M .Magnetic nanoparticle superstructures[J].European journal of inorganic chemistry,2005(18):3571-3583. |
| [12] | Sophie Laurent;Delphine Forge;Marc Port;Alain Roch;Caroline Robic;Luce Vander Elst;Robert N. Muller .Magnetic Iron Oxide Nanoparticles: Synthesis, Stabilization, Vectorization, Physicochemical Characterizations, and Biological Applications[J].Chemical Reviews,2008(6):2064-2110. |
| [13] | Chen W;Pan XL;Bao XH .Tuning of redox properties of iron and iron oxides via encapsulation within carbon nanotubes[J].Journal of the American Chemical Society,2007(23):7421-7426. |
| [14] | Tselepidou, A.;Drosos, M.;Stathi, P.;Bourlinos, A.B.;Zboril, R.;Deligiannakis, Y. .A water-dispersible, carboxylate-rich carbonaceous solid: Synthesis, heavy metal uptake and EPR study[J].Journal of Materials Science,2012(7):3140-3149. |
| [15] | Sheng Wang;Huimin Bao;Pengyuan Yang .Immobilization of trypsin in polyaniline-coated nano-Fe3O4/carbon nanotube composite for protein digestion[J].Analytica chimica acta,2008(2):182-189. |
| [16] | Wang W X;Wang K L;Lv R T et al.Synthesis of Fe-filled thin-walled carbon nanotubes with high filling ratio by using dichlorobenzene as precursor[J].Carbon,2007,45:1105-1136. |
| [17] | Zhang M.;Yudasaka M.;Bandow S.;Iijima S. .Thermogravimetric analysis for the array of C-60 molecules formed in single-wall carbon nanotube[J].Chemical Physics Letters,2003(5-6):680-683. |
| [18] | Willinger M G;Neri G;Bonavita A et al.The controlled deposition of metal oxides onto carbon nanotubes by atomic layer deposition:examples and a case study on the application of V2O4 coated nanotubes in gas sensingw[J].Physical Chemistry Chemical Physics,2009,11:3615-3622. |
| [19] | Jing Li;Songbai Tang;Li Lu .Preparation of Nanocomposites of Metals, Metal Oxides, and Carbon Nanotubes via Self-Assembly[J].Journal of the American Chemical Society,2007(30):9401-9409. |
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%