Controlling the diameter distribution of carbon nanotubes grown from camphor on a zeolite support

Abstract Single-wall and multi-wall carbon nanotubes (SWNTs and MWNTs, respectively) of controlled diameter distribution were selectively grown by thermal decomposition of a botanical hydrocarbon, camphor, on a high-silica zeolite support impregnated with Fe–Co catalyst. Effects of catalyst concentration, growth temperature and camphor vapor pressure were investigated in wide ranges, and diameter distribution statistics of as-grown nanotubes was analyzed. High yields of metal-free MWNTs of fairly uniform diameter (∼10 nm) were grown at 600–700 °C, whereas significant amounts (∼30%) of SWNTs were formed at 850–900 °C within a narrow diameter range of 0.86–1.23 nm. Transmission electron microscopy and micro-Raman spectroscopy reveal that camphor-grown nanotubes are highly graphitized as compared to those grown from conventional CNT precursors used in chemical vapor deposition.

[1]  A. M. Rao,et al.  Diameter-Selective Raman Scattering from Vibrational Modes in Carbon Nanotubes , 1997, Science.

[2]  L. Cui,et al.  Large-scale prepartation of carbon nanotubes by nickel catalyzed decomposition of methane at 600° C , 1999 .

[3]  Masamichi Kohno,et al.  Low-temperature synthesis of high-purity single-walled carbon nanotubes from alcohol , 2002 .

[4]  J. Nagy,et al.  Fe-catalyzed carbon nanotube formation , 1996 .

[5]  Mukhopadhyay,et al.  Fullerenes from camphor: A natural source. , 1994, Physical review letters.

[6]  P. Ajayan,et al.  Large-scale synthesis of carbon nanotubes , 1992, Nature.

[7]  J. P. Zhang,et al.  Controlled production of aligned-nanotube bundles , 1997, Nature.

[8]  T. Ishihara,et al.  Camphor-based carbon nanotubes as an anode in lithium secondary batteries , 2002 .

[9]  M. Umeno,et al.  The a-C:H/p-Si solar cell deposited by pulsed laser deposition , 2004 .

[10]  K. Hernádi.  Catalytic synthesis of multiwall carbon nanotubes from methylacetylene , 2002 .

[11]  H. Dai,et al.  Self-oriented regular arrays of carbon nanotubes and their field emission properties , 1999, Science.

[12]  M. Umeno,et al.  A phosphorous doped (n-type) carbon/boron doped (p-type) silicon photovoltaic solar cell from a natural source , 1999 .

[13]  P. Ajayan,et al.  Microfabrication technology: Organized assembly of carbon nanotubes , 2002, Nature.

[14]  Yoshinori Ando,et al.  Field emission from camphor–pyrolyzed carbon nanotubes , 2004 .

[15]  Y. Shibuta,et al.  Generation of single-walled carbon nanotubes from alcohol and generation mechanism by molecular dynamics simulations. , 2004, Journal of nanoscience and nanotechnology.

[16]  J. Wen,et al.  Effect of gas pressure on the growth and structure of carbon nanotubes by chemical vapor deposition , 2001 .

[17]  H. Kroto,et al.  Pyrolytic carbon nanotubes from vapor-grown carbon fibers , 1995 .

[18]  Yoshinori Ando,et al.  A simple method of producing aligned carbon nanotubes from an unconventional precursor – Camphor , 2003 .

[19]  S. Iijima,et al.  Carbon nanotubes from camphor by catalytic cvd , 2002 .

[20]  Young Hee Lee,et al.  Crystalline Ropes of Metallic Carbon Nanotubes , 1996, Science.

[21]  S. Xie,et al.  Large-Scale Synthesis of Aligned Carbon Nanotubes , 1996, Science.

[22]  Xizhang Wang,et al.  In situ TA-MS study of the six-membered-ring-based growth of carbon nanotubes with benzene precursor. , 2004, Journal of the American Chemical Society.

[23]  A. Govindaraj,et al.  Carbon nanotubes by the metallocene route , 1997 .

[24]  Yoshinori Ando,et al.  Single-wall and multi-wall carbon nanotubes from camphor—a botanical hydrocarbon , 2003 .

[25]  W. Hsu,et al.  Electron beam puncturing of carbon nanotube containers for release of stored N2 gas , 1975 .

[26]  Yoshinori Ando,et al.  Camphor–a botanical precursor producing garden of carbon nanotubes , 2003 .

[27]  K. Mukhopadhyay,et al.  Spongy carbon nanobeads—A new material , 1998 .

[28]  Alan M. Cassell,et al.  Chemical vapor deposition of methane for single-walled carbon nanotubes , 1998 .

[29]  P. Eklund,et al.  Effect of the Growth Temperature on the Diameter Distribution and Chirality of Single-Wall Carbon Nanotubes , 1998 .

[30]  J. Nagy,et al.  Catalytic synthesis of carbon nanotubes using zeolite support , 1996 .