Journal of Nanoparticle Research

, Volume 13, Issue 1, pp 139–146 | Cite as

Aerosol formation of Sea-Urchin-like nanostructures of carbon nanotubes on bimetallic nanocomposite particles

Research Paper


With the advantage of continuous production of pure carbon nanotubes (CNTs), a new simple aerosol process for the formation of CNTs was developed. A combination of conventional spray pyrolysis and thermal chemical vapor deposition enabled the formation unusual sea-urchin-like carbon nanostructures composed of multi-walled CNTs and metal composite nanoparticles. The CNTs formed were relatively untangled and uniform with a diameter of less than ~10 nm. The key to the formation of CNTs in this way was to create a substrate particle containing both a catalytic and non-catalytic component, which prevented coking. The density of the CNTs grown on the spherical metal nanoparticles could be controlled by perturbing the density of the metal catalysts (Fe) in the host non-catalytic metal particle matrix (Al). Mobility size measurement was identified as a useful technique to real-time characterization of either the catalytic formation of thin carbon layer or CNTs on the surface of the metal aerosol. These materials have shown unique properties in enhancing the thermal conductivity of fluids. Other potential advantages are that the as-produced material can be manipulated easily without the concern of high mobility of conventional nanowires, and then subsequently released at the desired time in an unagglomerated state.


Hybrid nanoparticles Carbon nanotubes Spray pyrolysis Thermal CVD 


  1. Ago H, Ohshima S, Uchida K, Yumura M (2001) Gas-phase synthesis of single-wall carbon nanotubes from colloidal solution of metal nanoparticles. J Phys Chem B 105(43):10453–10456CrossRefGoogle Scholar
  2. Andrews R, Jacques D, Rao AM, Rantell T, Derbyshire F, Chen Y, Chen J, Haddon RC (1999) Nanotube composite carbon fibers. Appl Phys Lett 75(9):1329–1331CrossRefGoogle Scholar
  3. Cheung CL, Kurtz A, Park H, Lieber CM (2002) Diameter-controlled synthesis of carbon nanotubes. J Phys Chem B 106(10):2429–2433CrossRefGoogle Scholar
  4. Choi SUS, Zhang ZG, Yu W, Lockwood FE, Grulke EA (2001) Anomalous thermal conductivity enhancement in nanotube suspensions. Appl Phys Lett 79:2252–2254CrossRefGoogle Scholar
  5. Ci L, Li Y, Wei B, Liang J, Xu C, Wu D (2000) Preparation of carbon nanofibers by the floating catalyst method. Carbon 38:1933–1937CrossRefGoogle Scholar
  6. Esumi K, Ishigami M, Nakajima A, Sawada K, Honda H (1996) Chemical treatment of carbon nanotubes. Carbon 34:279–281CrossRefGoogle Scholar
  7. Guinier A (1963) X-ray diffraction. Freeman, San Francisco, p 124Google Scholar
  8. Han ZH, Yang B, Kim SH, Zachariah MR (2006) Application of hybrid sphere/carbon nanotube particles in nanofluids. Nanotechnology 18:105701–105704CrossRefGoogle Scholar
  9. Iijima S (1991) Helical microtubules of graphitic carbon. Nature 354:56–58CrossRefGoogle Scholar
  10. Kim SH, Zachariah MR (2005) In-flight size classification of carbon nanotubes by gas phase electrophoresis. Nanotechnology 16:2149–2152CrossRefGoogle Scholar
  11. Kim SH, Zachariah MR (2006) In-flight kinetic measurement of the aerosol growth of carbon nanotubes by electrical mobility classification. J Phys Chem B 110:4555–4562CrossRefGoogle Scholar
  12. Kim SH, Liu BYH, Zachariah MR (2002) Synthesis of nanoporous metal oxide particles by a new inorganic metrix spray pyrolysis method. Chem Mater 14:2889–2899CrossRefGoogle Scholar
  13. Knutson EO, Whitby KT (1975) Aerosol classification by electrical mobility: apparatus, theory, and applications. J Aerosol Sci 6:443–451CrossRefGoogle Scholar
  14. Kodas TT, Hampden-Smith MJ (1999) Aerosol processing of materials. Wiley-VCH, New YorkGoogle Scholar
  15. Massaro TA, Petersen EE (1971) Bulk diffusion of carbon-14 through polycrystalline nickel foil between 350 and 700 C. J Appl Phys 42(13):5534–5539CrossRefGoogle Scholar
  16. Mojica JF, Levenson LL (1976) Bulk-to-surface precipitation and surface diffusion of carbon on polycrystalline nickel. Surf Sci 59(2):447–460CrossRefGoogle Scholar
  17. Nikolaev P, Bronikowski MJ, Bradely RK, Rohmund F, Colbert DT, Smith KA, Smalley RE (1999) Gas-phase catalytic growth of single-walled carbon nanotubes from carbon monoxide. Chem Phys Lett 313(1–2):91–97CrossRefGoogle Scholar
  18. Niu C, Sichel EK, Hoch R, Moy D, Tennent H (1997) High power electrochemical capacitors based on carbon nanotube electrodes. Appl Phys Lett 70:1480–1482CrossRefGoogle Scholar
  19. Sato S, Kawabata A, Nihei M, Awano Y (2003) Growth of diameter-controlled carbon nanotubes using monodisperse nickel nanoparticles obtained with a differential mobility analyzer. Chem Phys Lett 382(3–4):361–366CrossRefGoogle Scholar
  20. Vander Wal RL, Ticich TM, Curtis VE (2000) Direct synthesis of metal-catalyzed carbon nanofibers and graphite encapsulated metal nanoparticles. J Phys Chem B 104(49):11606–11611CrossRefGoogle Scholar
  21. Xie H, Lee H, Youn W, Choi M (2003) Nanofluids containing multiwalled carbon nanotubes and their enhanced thermal conductivities. J Appl Phys 94(8):4967–4971CrossRefGoogle Scholar

Copyright information

© Springer Science+Business Media B.V. 2010

Authors and Affiliations

  1. 1.Nanoparticle-based Manufacturing and Metrology Laboratory, Department of Mechanical Engineering and ChemistryUniversity of MarylandCollege ParkUSA
  2. 2.National Institute of Standards and TechnologyGaithersburgUSA
  3. 3.Environmental Molecular Sciences LaboratoryPacific Northwest National LaboratoryRichlandUSA
  4. 4.Department of Nanosystem and Nanoprocess EngineeringPusan National UniversityPusanKorea

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