以二甲硫醚为碳源前驱体,Co/MgO为催化剂,采用化学气相沉积法生长出碳纳米管及Y形碳纳米管,此法稳定性及重现性较好.通过扫描电子显微镜、透射电子显微镜、拉曼光谱及X射线衍射对产品形态和结构进行了分析和表征,结果表明,所制备的碳纳米管形态较规整、纯度较高,具有较好的石墨微晶结构;导电性能测试结果显示,Y形碳纳米管各分支均呈现出典型的金属性导电性能.
Y-junctions and related carbon nanotubes (CNTs) are synthesized by CVD method using dimethyl sulfide as carbon source precursor. Carbon nanotubes are directly grown on substrate using Co/MgO as catalyst precursor. Better production stability and reproducibility can be obtained by regulating the content of the dimethyl sulfide vapor concentration. The products are analyzed and characterized by SEM(Scanning electron microscope), TEM (Transmission electron microscope), Raman spectrum and XRD(X-ray diffraction) , and it show an ideal structure and morphology with high purity. The conducting measurement indicates that the measured Y-junction carbon nanotubes are metals.
参考文献
| [1] | Wei B Q;Vajtai R;Jung Y et al.Organized assembly of carbon[J].Nature,2002,416:495. |
| [2] | Ebbesen T W;Ajayan P M .Large scale synthesis of carbon nanotubes[J].Nature,1992,358(6383):220. |
| [3] | Andriotis AN.;Srivastava D.;Chernozatonskii L.;Menon M. .Rectification properties of carbon nanotube "Y-junctions" - art. no. 066802[J].Physical review letters,2001(6):6802-0. |
| [4] | Papadopoulos C.;Li J.;Vedeneev AS.;Xu JM.;Rakitin A. .Electronic transport in Y-junction carbon nanotubes[J].Physical review letters,2000(16):3476-3479. |
| [5] | B. C. Satishkumar;P. John Thomas;A. Govindaraj .Y-junction carbon nanotubes[J].Applied physics letters,2000(16):2530-2532. |
| [6] | W. Z. Li;J. G. Wen;Z. F. Ren .Straight carbon nanotube Y junctions[J].Applied physics letters,2001(12):1879-1881. |
| [7] | Deepak FL.;Rao CNR.;Govindaraj A. .Synthetic strategies for Y-junction carbon nanotubes[J].Chemical Physics Letters,2001(1/2):5-10. |
| [8] | N. Gothard;C. Daraio;J. Gaillard;R. Zidan;S. Jin;A. M. Rao .Controlled Growth of Y-Junction Nanotubes Using Ti-Doped Vapor Catalyst[J].Nano letters,2004(2):213-217. |
| [9] | Terrones M.;Banhart F.;Grobert N.;Charlier JC.;Terrones H.;Ajayan PM. .Molecular junctions by joining single-walled carbon nanotubes - art. no. 075505[J].Physical review letters,2002(7):5505-0. |
| [10] | Zhu S.;Su CH.;Cochrane JC.;Lehoczky S.;Cui Y.;Burger A. .Growth orientation of carbon nanotubes by thermal chemical vapor deposition[J].Journal of Crystal Growth,2002(2/3):584-588. |
| [11] | Liming Yuan;Kozo Saito;Hu Wenchong et al.Ethylene flam synthesis of well-aligned multi-walled carbon nanoyubes[J].Chemical Physics Letters,2001,346(l-2):23. |
| [12] | Takeshi Fujita;Mingwei Chen;Xiaomin Wang;Bingshe Xu;Koji Inoke;Kazuo Yamamoto .Electron holography of single-crystal iron nanorods encapsulated in carbon nanotubes[J].Journal of Applied Physics,2007(1):014323-1-014323-5-0. |
| [13] | Luo G;Li Z;Wei F et al.Catalysts effect on morphology of carbon nanotubes prepared by catalytic chemical vapor deposition in a nano-agglomerate bed[J].PHYSICA B,2002,323(01):314. |
| [14] | Satishkumar B C;Govindaraj A;Rao C N R .Bundles of aligned carbon nanotubes obtained by the pyro lysis of ferrocenehydrocarbon mixtures:Role of the metal nanoparticles produced in situ[J].CHEMICAL PHYSICS LETTERS,1999,307(3-4):158. |
| [15] | Zhou W;Ooi Y H;Russo R et al.Structural characterization and diameterdependent oxidative stability of single wall carbon nanotubes synthesized by the catalytic decomposition of CO[J].Chemical Physics Letters,2001,350(1-2):6. |
| [16] | Ci LJ.;Wei BQ.;Liang J.;Xu CL.;Wu DH.;Wei JQ. .Carbon nanofibers and single-walled carbon nanotubes prepared by the floating catalyst method[J].Carbon: An International Journal Sponsored by the American Carbon Society,2001(3):329-335. |
| [17] | Murakami Y.;Miyauchi Y.;Chiashi S.;Maruyama S. .Characterization of single-walled carbon nanotubes catalytically synthesized from alcohol[J].Chemical Physics Letters,2003(1/2):53-58. |
| [18] | Du GH;Li WZ;Lin YQ .Filling carbon nanotubes with Co9S8 nanowires through in situ catalyst transition and extrusion[J].The journal of physical chemistry, C. Nanomaterials and interfaces,2008(6):1890-1895. |
| [19] | Du G H;Li W Z;Liu Y Q et al.Growth of carbon nanotubes by the pyrolysis of thiophene[J].Journal of Physical Chemistry C,2007,111(39):l4293. |
| [20] | Xuguang Liu;Yongzhen Yang;Hongyan Liu .Carbon nanotubes from catalytic pyrolysis of deoiled asphalt[J].Materials Letters,2007(18):3916-3919. |
| [21] | Mintmire J W;Dunlap B I;White C T .Are fullerene tubules metallic[J].Physical Review Letters,1992,68(05):631. |
| [22] | Hamada N;Sawada S I;Oshiyma A .New one-dimensional conductors:Graphitic microtubules[J].Physical Review Letters,1992,68(10):1579. |
| [23] | Maria Letizia Terrbnova;Vito Sessa;Marco Rossie .The world of carbon nanotubes:An overview of cvd growth methodologies[J].Chemical Vapor Deposition,2006,12:315. |
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