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Journal of Nanomaterials
Volume 2010 (2010), Article ID 395191, 11 pages
http://dx.doi.org/10.1155/2010/395191
Review Article

Role of Reaction and Factors of Carbon Nanotubes Growth in Chemical Vapour Decomposition Process Using Methane—A Highlight

1School of Chemical Engineering, Engineering Campus, Universiti Sains Malaysia, Seri Ampangan, Nibong Tebal, Pulau Pinang 14300, Malaysia
2School of Engineering, Monash University, Jalan Lagoon Selatan, Bandar Sunway, Selangor 46150, Malaysia

Received 5 November 2009; Accepted 13 April 2010

Academic Editor: Steve Acquah

Copyright © 2010 Sivakumar VM et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Linked References

  1. E. B. Barros, A. Jorio, G. G. Samsonidze et al., “Review on the symmetry-related properties of carbon nanotubes,” Physics Reports, vol. 431, no. 6, pp. 261–302, 2006. View at Publisher · View at Google Scholar · View at Scopus
  2. S. B. Sinnott and R. Andrews, “Carbon nanotubes: synthesis, properties, and applications,” Critical Reviews in Solid State and Materials Sciences, vol. 26, no. 3, pp. 145–249, 2001. View at Scopus
  3. Z. L. Wang, P. Poncharal, and W. A. de Heer, “Measuring physical and mechanical properties of individual carbon nanotubes by in situ TEM,” Journal of Physics and Chemistry of Solids, vol. 61, no. 7, pp. 1025–1030, 2000. View at Publisher · View at Google Scholar · View at Scopus
  4. P. M. Ajayan, L. S. Schadler, C. Giannaris, and A. Rubio, “Single-walled carbon nanotube-polymer composites: strength and weakness,” Advanced Materials, vol. 12, no. 10, pp. 750–753, 2000. View at Publisher · View at Google Scholar · View at Scopus
  5. K. T. Lau, M. Lu, and D. Hui, “Coiled carbon nanotubes: synthesis and their potential applications in advanced composite structures,” Composites Part B, vol. 37, no. 6, pp. 437–448, 2006. View at Publisher · View at Google Scholar · View at Scopus
  6. Z. L. Wang, R. P. Gao, P. Poncharal, W. A. de Heer, Z. R. Dai, and Z. W. Pan, “Mechanical and electrostatic properties of carbon nanotubes and nanowires,” Materials Science and Engineering C, vol. 16, no. 1-2, pp. 3–10, 2001. View at Publisher · View at Google Scholar · View at Scopus
  7. S. Iijima, “Helical microtubules of graphitic carbon,” Nature, vol. 354, no. 6348, pp. 56–58, 1991. View at Scopus
  8. M. Endo, K. Takeuchi, S. Igarashi, K. Kobori, M. Shiraishi, and H. W. Kroto, “The production and structure of pyrolytic carbon nanotubes (PCNTs),” Journal of Physics and Chemistry of Solids, vol. 54, no. 12, pp. 1841–1848, 1993. View at Scopus
  9. T. Guo, P. Nikolaev, A. Thess, D. T. Colbert, and R. E. Smalley, “Catalytic growth of single-walled manotubes by laser vaporization,” Chemical Physics Letters, vol. 243, no. 1-2, pp. 49–54, 1995. View at Publisher · View at Google Scholar · View at Scopus
  10. P. Nikolaev, M. J. Bronikowski, R. K. Bradley et al., “Gas-phase catalytic growth of single-walled carbon nanotubes from carbon monoxide,” Chemical Physics Letters, vol. 313, no. 1-2, pp. 91–97, 1999. View at Scopus
  11. J. W. Ward, B. Q. Wei, and P. M. Ajayan, “Substrate effects on the growth of carbon nanotubes by thermal decomposition of methane,” Chemical Physics Letters, vol. 376, no. 5-6, pp. 717–725, 2003. View at Publisher · View at Google Scholar · View at Scopus
  12. B. Zheng, Y. Li, and J. Liu, “CVD synthesis and purification of single-walled carbon nanotubes on aerogel-supported catalyst,” Applied Physics A, vol. 74, no. 3, pp. 345–348, 2002. View at Publisher · View at Google Scholar · View at Scopus
  13. C. E. Baddour and C. Briens, “Carbon nanotube synthesis: a review,” International Journal of Chemical Reactor Engineering, vol. 3, 2005. View at Scopus
  14. P. Avouris, T. Hertel, R. Martel, T. Schmidt, H. R. Shea, and R. E. Walkup, “Carbon nanotubes: nanomechanics, manipulation, and electronic devices,” Applied Surface Science, vol. 141, no. 3-4, pp. 201–209, 1999. View at Scopus
  15. K. Tsukagoshi, N. Yoneya, S. Uryu et al., “Carbon nanotube devices for nanoelectronics,” Physica B, vol. 323, no. 1–4, pp. 107–114, 2002. View at Publisher · View at Google Scholar · View at Scopus
  16. G. A. Rivas, M. D. Rubianes, M. C. Rodríguez et al., “Carbon nanotubes for electrochemical biosensing,” Talanta, vol. 74, no. 3, pp. 291–307, 2007. View at Publisher · View at Google Scholar · View at Scopus
  17. Y. Yun, Z. Dong, V. Shanov et al., “Nanotube electrodes and biosensors,” Nano Today, vol. 2, no. 6, pp. 30–37, 2007. View at Publisher · View at Google Scholar · View at Scopus
  18. R. Martel, T. Schmidt, H. R. Shea, T. Hertel, and P. Avouris, “Single- and multi-wall carbon nanotube field-effect transistors,” Applied Physics Letters, vol. 73, no. 17, pp. 2447–2449, 1998. View at Publisher · View at Google Scholar · View at Scopus
  19. J. N. Coleman, U. Khan, W. J. Blau, and Y. K. Gun'ko, “Small but strong: a review of the mechanical properties of carbon nanotube-polymer composites,” Carbon, vol. 44, no. 9, pp. 1624–1652, 2006. View at Publisher · View at Google Scholar · View at Scopus
  20. M. José-Yacamán, M. Miki-Yoshida, L. Rendón, and J. G. Santiesteban, “Catalytic growth of carbon microtubules with fullerene structure,” Applied Physics Letters, vol. 62, no. 2, pp. 202–204, 1993. View at Publisher · View at Google Scholar · View at Scopus
  21. H. Zhu, X. Li, C. Xu, and D. Wu, “Co-synthesis of single-walled carbon nanotubes and carbon fibers,” Materials Research Bulletin, vol. 37, no. 1, pp. 177–183, 2002. View at Publisher · View at Google Scholar · View at Scopus
  22. W. Ren, F. Li, J. Chen, S. Bai, and H.-M. Cheng, “Morphology, diameter distribution and Raman scattering measurements of double-walled carbon nanotubes synthesized by catalytic decomposition of methane,” Chemical Physics Letters, vol. 359, no. 3-4, pp. 196–202, 2002. View at Publisher · View at Google Scholar · View at Scopus
  23. Q. Li, H. Yan, J. Zhang, and Z. Liu, “Effect of hydrocarbons precursors on the formation of carbon nanotubes in chemical vapor deposition,” Carbon, vol. 42, no. 4, pp. 829–835, 2004. View at Publisher · View at Google Scholar · View at Scopus
  24. V. K. Varadan and J. Xie, “Large-scale synthesis of multi-walled carbon nanotubes by microwave CVD,” Smart Materials and Structures, vol. 11, no. 4, pp. 610–616, 2002. View at Publisher · View at Google Scholar · View at Scopus
  25. B. Fidalgo, Y. Fernández, L. Zubizarreta et al., “Growth of nanofilaments on carbon-based materials from microwave-assisted decomposition of CH4,” Applied Surface Science, vol. 254, no. 11, pp. 3553–3557, 2008. View at Publisher · View at Google Scholar · View at Scopus
  26. J. H. Yen, I. C. Leu, C. C. Lin, and M. H. Hon, “Synthesis of well-aligned carbon nanotubes by inductively coupled plasma chemical vapor deposition,” Applied Physics A, vol. 80, no. 2, pp. 415–421, 2005. View at Publisher · View at Google Scholar · View at Scopus
  27. T. Ikuno, M. Katayama, N. Yamauchi et al., “Selective growth of straight carbon nanotubes by low-pressure thermal chemical vapor deposition,” Japanese Journal of Applied Physics, vol. 43, no. 2, pp. 860–863, 2004. View at Scopus
  28. M. Kadlečíková, A. Vojačková, J. Breza, V. Luptáková, M. Michalka, and K. Jesenák, “Bundles of carbon nanotubes grown on sapphire and quartz substrates by catalytic hot filament chemical vapor deposition,” Materials Letters, vol. 61, no. 23-24, pp. 4549–4552, 2007. View at Publisher · View at Google Scholar · View at Scopus
  29. H. Y. Yap, B. Ramaker, A. V. Sumant, and R. W. Carpick, “Growth of mechanically fixed and isolated vertically aligned carbon nanotubes and nanofibers by DC plasma-enhanced hot filament chemical vapor deposition,” Diamond & Related Materials, vol. 15, no. 10, pp. 1622–1628, 2006. View at Publisher · View at Google Scholar · View at Scopus
  30. H. E. Unalan and M. Chhowalla, “Investigation of single-walled carbon nanotube growth parameters using alcohol catalytic chemical vapour deposition,” Nanotechnology, vol. 16, no. 10, pp. 2153–2163, 2005. View at Publisher · View at Google Scholar · View at Scopus
  31. W. Qian, T. Liu, F. Wei, Z. Wang, and Y. Li, “Enhanced production of carbon nanotubes: combination of catalyst reduction and methane decomposition,” Applied Catalysis A, vol. 258, no. 1, pp. 121–124, 2004. View at Publisher · View at Google Scholar · View at Scopus
  32. T. V. Reshetenko, L. B. Avdeeva, Z. R. Ismagilov, and A. L. Chuvilin, “Catalytic filamentous carbon as supports for nickel catalysts,” Carbon, vol. 42, no. 1, pp. 143–148, 2004. View at Publisher · View at Google Scholar · View at Scopus
  33. R. Bonadiman, M. D. Lima, M. J. de Andrade, and C. P. Bergmann, “Production of single and multi-walled carbon nanotubes using natural gas as a precursor compound,” Journal of Materials Science, vol. 41, no. 22, pp. 7288–7295, 2006. View at Publisher · View at Google Scholar · View at Scopus
  34. K. Y. Tran, B. Heinrichs, J.-F. Colomer, J.-P. Pirard, and S. Lambert, “Carbon nanotubes synthesis by the ethylene chemical catalytic vapour deposition (CCVD) process on Fe, Co, and Fe-Co/Al2O3 sol-gel catalysts,” Applied Catalysis A, vol. 318, pp. 63–69, 2007. View at Publisher · View at Google Scholar · View at Scopus
  35. N. Inami, M. Ambri Mohamed, E. Shikoh, and A. Fujiwara, “Synthesis-condition dependence of carbon nanotube growth by alcohol catalytic chemical vapor deposition method,” Science and Technology of Advanced Materials, vol. 8, no. 4, pp. 292–295, 2007. View at Publisher · View at Google Scholar · View at Scopus
  36. R. Longtin, C. Fauteux, R. Goduguchinta, and J. Pegna, “Synthesis of carbon nanofiber films and nanofiber composite coatings by laser-assisted catalytic chemical vapor deposition,” Thin Solid Films, vol. 515, no. 5, pp. 2958–2964, 2007. View at Publisher · View at Google Scholar · View at Scopus
  37. J.-F. Colomer, J.-M. Benoit, C. Stephan, S. Lefrant, G. Van Tendeloo, and J. B.nagy, “Characterization of single-wall carbon nanotubes produced by CCVD method,” Chemical Physics Letters, vol. 345, no. 1-2, pp. 11–17, 2001. View at Publisher · View at Google Scholar · View at Scopus
  38. J. Kong, A. M. Cassell, and H. Dai, “Chemical vapor deposition of methane for single-walled carbon nanotubes,” Chemical Physics Letters, vol. 292, no. 4–6, pp. 567–574, 1998. View at Scopus
  39. K. Hernadi, Z. Kónya, A. Siska et al., “The role of zeotype catalyst support in the synthesis of carbon nanotubes by CCVD,” Studies in Surface Science and Catalysis, vol. 142, pp. 541–548, 2002. View at Scopus
  40. T. Hiraoka, T. Kawakubo, J. Kimura et al., “Selective synthesis of double-wall carbon nanotubes by CCVD of acetylene using zeolite supports,” Chemical Physics Letters, vol. 382, no. 5-6, pp. 679–685, 2003. View at Publisher · View at Google Scholar · View at Scopus
  41. B. C. Liu, S. C. Lyu, S. I. Jung et al., “Single-walled carbon nanotubes produced by catalytic chemical vapor deposition of acetylene over Fe-Mo/MgO catalyst,” Chemical Physics Letters, vol. 383, no. 1-2, pp. 104–108, 2004. View at Publisher · View at Google Scholar · View at Scopus
  42. C. He, N. Zhao, C. Shi, X. Du, and J. Li, “Carbon nanotubes and onions from methane decomposition using Ni/Al catalysts,” Materials Chemistry and Physics, vol. 97, no. 1, pp. 109–115, 2006. View at Publisher · View at Google Scholar · View at Scopus
  43. N. Zhao, Q. Cui, C. He et al., “Synthesis of carbon nanostructures with different morphologies by CVD of methane,” Materials Science and Engineering A, vol. 460-461, pp. 255–260, 2007. View at Publisher · View at Google Scholar · View at Scopus
  44. Y. Yang, Z. Hu, Y. N. Lü, and Y. Chen, “Growth of carbon nanotubes with metal-loading mesoporous molecular sieves catalysts,” Materials Chemistry and Physics, vol. 82, no. 2, pp. 440–443, 2003. View at Publisher · View at Google Scholar · View at Scopus
  45. K. Kidena, Y. Kamiyama, and M. Nomura, “A possibility of the production of carbon nanotubes from heavy hydrocarbons,” Fuel Processing Technology, vol. 89, no. 4, pp. 449–454, 2008. View at Publisher · View at Google Scholar · View at Scopus
  46. H. Liu, G. Cheng, R. Zheng, Y. Zhao, and C. Liang, “Influence of synthesis process on preparation and properties of Ni/CNT catalyst,” Diamond & Related Materials, vol. 15, no. 1, pp. 15–21, 2006. View at Publisher · View at Google Scholar · View at Scopus
  47. Y. Li, X. Zhang, X. Tao et al., “Growth mechanism of multi-walled carbon nanotubes with or without bundles by catalytic deposition of methane on Mo/MgO,” Chemical Physics Letters, vol. 386, no. 1–3, pp. 105–110, 2004. View at Publisher · View at Google Scholar · View at Scopus
  48. B. C. Liu, S. C. Lyu, T. J. Lee et al., “Synthesis of single- and double-walled carbon nanotubes by catalytic decomposition of methane,” Chemical Physics Letters, vol. 373, no. 5-6, pp. 475–479, 2003. View at Publisher · View at Google Scholar · View at Scopus
  49. R. M. de Almeida, H. V. Fajardo, D. Z. Mezalira et al., “Preparation and evaluation of porous nickel-alumina spheres as catalyst in the production of hydrogen from decomposition of methane,” Journal of Molecular Catalysis A, vol. 259, no. 1-2, pp. 328–335, 2006. View at Publisher · View at Google Scholar · View at Scopus
  50. R. C. Haddon, J. Sippel, A. G. Rinzler, and F. Papadimitrakopoulos, “Purification and separation of carbon nanotubes,” MRS Bulletin, vol. 29, no. 4, pp. 252–241, 2004. View at Scopus
  51. Y. Ando, X. Zhao, T. Sugai, and M. Kumar, “Growing carbon nanotubes,” Materials Today, vol. 7, no. 9, pp. 22–29, 2004. View at Scopus
  52. N. Muradov, “Catalysis of methane decomposition over elemental carbon,” Catalysis Communications, vol. 2, no. 3-4, pp. 89–94, 2001. View at Scopus
  53. C.-M. Chuang, S. P. Sharma, J.-M. Ting, H.-P. Lin, H. Teng, and C.-W. Huang, “Preparation of sea urchin-like carbons by growing one-dimensional nanocarbon on mesoporous carbons,” Diamond & Related Materials, vol. 17, no. 4-5, pp. 606–610, 2008. View at Publisher · View at Google Scholar · View at Scopus
  54. A.-C. Dupuis, “The catalyst in the CCVD of carbon nanotubes-a review,” Progress in Materials Science, vol. 50, no. 8, pp. 929–961, 2005. View at Publisher · View at Google Scholar · View at Scopus
  55. I. Vesselényi, K. Niesz, A. Siska et al., “Production of carbon nanotubes on different metal supported catalysts,” Reaction Kinetics and Catalysis Letters, vol. 74, no. 2, pp. 329–336, 2001. View at Publisher · View at Google Scholar · View at Scopus
  56. K. Hernadi, A. Fonseca, J. B. Nagy, D. Bernaerts, A. Fudala, and A. A. Lucas, “Catalytic synthesis of carbon nanotubes using zeolite support,” Zeolites, vol. 17, no. 5-6, pp. 416–423, 1996. View at Scopus
  57. R. Wang, H. Xu, L. Guo, and J. Liang, “Growth of single-walled carbon nanotubes on porous silicon,” Applied Surface Science, vol. 252, no. 20, pp. 7347–7351, 2006. View at Publisher · View at Google Scholar · View at Scopus
  58. W. Wongwiriyapan, M. Katayama, T. Ikuno et al., “Growth of single-walled carbon nanotubes rooted from Fe/Al nanoparticle array,” Japanese Journal of Applied Physics, vol. 44, no. 1, pp. 457–460, 2005. View at Publisher · View at Google Scholar · View at Scopus
  59. C. He, N. Zhao, C. Shi, X. Du, and J. Li, “Synthesis of binary and triple carbon nanotubes over Ni/Cu/Al2O3 catalyst by chemical vapor deposition,” Materials Letters, vol. 61, no. 27, pp. 4940–4943, 2007. View at Publisher · View at Google Scholar · View at Scopus
  60. W. Z. Li, J. G. Wen, M. Sennett, and Z. F. Ren, “Clean double-walled carbon nanotubes synthesized by CVD,” Chemical Physics Letters, vol. 368, no. 3-4, pp. 299–306, 2003. View at Publisher · View at Google Scholar · View at Scopus
  61. L. Ni, K. Kuroda, L.-P. Zhou et al., “Kinetic study of carbon nanotube synthesis over Mo/Co/MgO catalysts,” Carbon, vol. 44, no. 11, pp. 2265–2272, 2006. View at Publisher · View at Google Scholar · View at Scopus
  62. H. Yu, Q. Zhang, Q. Zhang et al., “Effect of the reaction atmosphere on the diameter of single-walled carbon nanotubes produced by chemical vapor deposition,” Carbon, vol. 44, no. 9, pp. 1706–1712, 2006. View at Publisher · View at Google Scholar · View at Scopus
  63. A. Tavasoli, K. Sadagiani, F. Khorashe, A. A. Seifkordi, A. A. Rohani, and A. Nakhaeipour, “Cobalt supported on carbon nanotubes—a promising novel Fischer-Tropsch synthesis catalyst,” Fuel Processing Technology, vol. 89, no. 5, pp. 491–498, 2008. View at Publisher · View at Google Scholar · View at Scopus
  64. F. Benissad-Aissani, H. Aït-Amar, M.-C. Schouler, and P. Gadelle, “The role of phosphorus in the growth of vapour-grown carbon fibres obtained by catalytic decomposition of hydrocarbons,” Carbon, vol. 42, no. 11, pp. 2163–2168, 2004. View at Publisher · View at Google Scholar · View at Scopus
  65. S. H. S. Zein and A. R. Mohamed, “Mn/Ni/TiO2 catalyst for the production of hydrogen and carbon nanotubes from methane decomposition,” Energy and Fuels, vol. 18, no. 5, pp. 1336–1345, 2004. View at Publisher · View at Google Scholar · View at Scopus
  66. M. C. Bahome, L. L. Jewell, K. Padayachy et al., “Fe-Ru small particle bimetallic catalysts supported on carbon nanotubes for use in Fischer-Tröpsch synthesis,” Applied Catalysis A, vol. 328, no. 2, pp. 243–251, 2007. View at Publisher · View at Google Scholar · View at Scopus
  67. L. Barthe, S. Desportes, M. Hemati, K. Philippot, and B. Chaudret, “Synthesis of supported catalysts by dry impregnation in fluidized bed,” Chemical Engineering Research and Design, vol. 85, no. 6, pp. 767–777, 2007. View at Publisher · View at Google Scholar · View at Scopus
  68. H.-A. Ichi-oka, N.-O. Higashi, Y. Yamada, T. Miyake, and T. Suzuki, “Carbon nanotube and nanofiber syntheses by the decomposition of methane on group 8-10 metal-loaded MgO catalysts,” Diamond & Related Materials, vol. 16, no. 4–7, pp. 1121–1125, 2007. View at Publisher · View at Google Scholar · View at Scopus
  69. S. Takenaka, H. Umebayashi, E. Tanabe, H. Matsune, and M. Kishida, “Specific performance of silica-coated Ni catalysts for the partial oxidation of methane to synthesis gas,” Journal of Catalysis, vol. 245, no. 2, pp. 392–400, 2007. View at Publisher · View at Google Scholar · View at Scopus
  70. M. C. Bahome, L. L. Jewell, D. Hildebrandt, D. Glasser, and N. J. Coville, “Fischer-Tropsch synthesis over iron catalysts supported on carbon nanotubes,” Applied Catalysis A, vol. 287, no. 1, pp. 60–67, 2005. View at Publisher · View at Google Scholar · View at Scopus
  71. L. Piao, Y. Li, J. Chen, L. Chang, and J. Y. S. Lin, “Methane decomposition to carbon nanotubes and hydrogen on an alumina supported nickel aerogel catalyst,” Catalysis Today, vol. 74, no. 1-2, pp. 145–155, 2002. View at Publisher · View at Google Scholar · View at Scopus
  72. J. M. Xu, X. B. Zhang, Y. Li et al., “Preparation of Mg1xFexMoO4 catalyst and its application to grow MWNTs with high efficiency,” Diamond & Related Materials, vol. 13, no. 10, pp. 1807–1811, 2004. View at Publisher · View at Google Scholar · View at Scopus
  73. Y. Chen and Y.-S. Lim, “A comparison of different preparation methods of Fe-Mo-Mg-O catalyst for the large-scale synthesis of carbon nanotubes,” Materials Science Forum, vol. 510-511, pp. 66–69, 2006. View at Scopus
  74. S. P. Turano and J. Ready, “Chemical vapor deposition synthesis of self-aligned carbon nanotube arrays,” Journal of Electronic Materials, vol. 35, no. 2, pp. 192–194, 2006. View at Scopus
  75. W. Qian, T. Liu, F. Wei, Z. Wang, and H. Yu, “Carbon nanotubes containing iron and molybdenum particles as a catalyst for methane decomposition,” Carbon, vol. 41, no. 4, pp. 846–848, 2003. View at Publisher · View at Google Scholar · View at Scopus
  76. Q. He, Q. Lin, L.-Z. Yao, W.-L. Cai, and Q. Zhu, “Effect of growth parameters on morphology of vertically aligned carbon nanotubes,” Chinese Journal of Chemical Physics, vol. 20, no. 2, pp. 207–212, 2007. View at Publisher · View at Google Scholar · View at Scopus
  77. Z. Yu, D. Chen, B. Tøtdal, and A. Holmen, “Effect of catalyst preparation on the carbon nanotube growth rate,” Catalysis Today, vol. 100, no. 3-4, pp. 261–267, 2005. View at Publisher · View at Google Scholar · View at Scopus
  78. Q. Zhang, W. Qian, Q. Wen, Y. Liu, D. Wang, and F. Wei, “The effect of phase separation in Fe/Mg/Al/O catalysts on the synthesis of DWCNTs from methane,” Carbon, vol. 45, no. 8, pp. 1645–1650, 2007. View at Publisher · View at Google Scholar · View at Scopus
  79. R. L. Vander Wal, T. M. Ticich, and V. E. Curtis, “Substrate-support interactions in metal-catalyzed carbon nanofiber growth,” Carbon, vol. 39, no. 15, pp. 2277–2289, 2001. View at Publisher · View at Google Scholar · View at Scopus
  80. J.-F. Colomer, G. Bister, I. Willems et al., “Synthesis of single-wall carbon nanotubes by catalytic decomposition of hydrocarbons,” Chemical Communications, no. 14, pp. 1343–1344, 1999. View at Scopus
  81. S.-P. Chai, S. H. S. Zein, and A. R. Mohamed, “Synthesizing carbon nanotubes and carbon nanofibers over supported-nickel oxide catalysts via catalytic decomposition of methane,” Diamond & Related Materials, vol. 16, no. 8, pp. 1656–1664, 2007. View at Publisher · View at Google Scholar · View at Scopus
  82. P. Piedigrosso, Z. Konya, J.-F. Colomer, A. Fonseca, G. Van Tendeloo, and J. B. Nagy, “Production of differently shaped multi-wall carbon nanotubes using various cobalt supported catalysts,” Physical Chemistry Chemical Physics, vol. 2, no. 1, pp. 163–170, 2000. View at Publisher · View at Google Scholar · View at Scopus
  83. S.-P. Chai, S. H. S. Zein, and A. R. Mohamed, “Preparation of carbon nanotubes over cobalt-containing catalysts via catalytic decomposition of methane,” Chemical Physics Letters, vol. 426, no. 4–6, pp. 345–350, 2006. View at Publisher · View at Google Scholar · View at Scopus
  84. K. C. Mondal, N. J. Coville, M. J. Witcomb, G. Tejral, and J. Havel, “Boron mediated synthesis of multiwalled carbon nanotubes by chemical vapor deposition,” Chemical Physics Letters, vol. 437, no. 1–3, pp. 87–91, 2007. View at Publisher · View at Google Scholar · View at Scopus
  85. C. Vallés, M. Pérez-Mendoza, P. Castell, M. T. Martínez, W. K. Maser, and A. M. Benito, “Towards helical and Y-shaped carbon nanotubes: the role of sulfur in CVD processes,” Nanotechnology, vol. 17, no. 17, pp. 4292–4299, 2006. View at Publisher · View at Google Scholar · View at Scopus
  86. H. Ago, N. Uehara, N. Yoshihara et al., “Gas analysis of the CVD process for high yield growth of carbon nanotubes over metal-supported catalysts,” Carbon, vol. 44, no. 14, pp. 2912–2918, 2006. View at Publisher · View at Google Scholar · View at Scopus
  87. S.-G. Kang, K.-K. Cho, K.-W. Kim, and G.-B. Cho, “Catalytic growth of single- and double-walled carbon nanotubes from Fe-Mo nanoparticles supported on MgO,” Journal of Alloys and Compounds, vol. 449, no. 1-2, pp. 269–273, 2008. View at Publisher · View at Google Scholar · View at Scopus
  88. L. Ci, H. Zhu, B. Wei, J. Liang, C. Xu, and D. Wu, “Phosphorus—a new element for promoting growth of carbon filaments by the floating catalyst method,” Carbon, vol. 37, no. 10, pp. 1652–1654, 1999. View at Publisher · View at Google Scholar · View at Scopus
  89. F. Benissad-Aissani, H. Aït-Amar, M.-C. Schouler, and P. Gadelle, “The role of phosphorus in the growth of vapour-grown carbon fibres obtained by catalytic decomposition of hydrocarbons,” Carbon, vol. 42, no. 11, pp. 2163–2168, 2004. View at Publisher · View at Google Scholar · View at Scopus
  90. S. Zhan, Y. Tian, Y. Cui et al., “Effect of process conditions on the synthesis of carbon nanotubes by catalytic decomposition of methane,” China Particuology, vol. 5, no. 3, pp. 213–219, 2007. View at Publisher · View at Google Scholar · View at Scopus
  91. S. P. Chai, V. M. Sivakumar, S. H. S. Zein, and A. R. Mohamed, “The examination of NiO and CoOx catalysts supported on Al2O3 and SiO2 for carbon nanotubes production via CCVD of methane,” Carbon Science & Technology, vol. 1, pp. 1–3, 2008.
  92. J.-H. Lin, C.-S. Chen, H.-L. Ma, C.-Y. Hsu, and H.-W. Chen, “Synthesis of MWCNTs on CuSO4/Al2O3 using chemical vapor deposition from methane,” Carbon, vol. 45, no. 1, pp. 223–225, 2007. View at Publisher · View at Google Scholar · View at Scopus
  93. F. Ohashi, G. Y. Chen, V. Stolojan, and S. R. P. Silva, “The role of the gas species on the formation of carbon nanotubes during thermal chemical vapour deposition,” Nanotechnology, vol. 19, no. 44, 2008. View at Publisher · View at Google Scholar · View at Scopus
  94. N. Q. Zhao, C. N. He, J. Ding et al., “Bamboo-shaped carbon nanotubes produced by catalytic decomposition of methane over nickel nanoparticles supported on aluminum,” Journal of Alloys and Compounds, vol. 428, no. 1-2, pp. 79–83, 2007. View at Publisher · View at Google Scholar · View at Scopus
  95. N. Zhao, C. He, Z. Jiang, J. Li, and Y. Li, “Physical activation and characterization of multi-walled carbon nanotubes catalytically synthesized from methane,” Materials Letters, vol. 61, no. 3, pp. 681–685, 2007. View at Publisher · View at Google Scholar · View at Scopus
  96. L. K. Noda, N. S. Gonçalves, A. Valentini, L. F. D. Probst, and R. M. de Almeida, “Effect of Ni loading and reaction temperature on the formation of carbon nanotubes from methane catalytic decomposition over Ni/SiO2,” Journal of Materials Science, vol. 42, no. 3, pp. 914–922, 2007. View at Publisher · View at Google Scholar · View at Scopus
  97. I. Bustero, G. Ainara, O. Isabel, M. Roberto, R. Inés, and A. Amaya, “Control of the properties of carbon nanotubes synthesized by CVD for application in electrochemical biosensors,” Microchimica Acta, vol. 152, no. 3-4, pp. 239–247, 2006. View at Publisher · View at Google Scholar · View at Scopus