EFFECT OF NITROGEN VARIATION ON THE SYNTHESIS OF VERTICALLY ALIGNED BAMBOO-SHAPED C–N NANOTUBES USING SUNFLOWER OIL

To examine the role of NH3 on bundles of aligned bamboo-shaped carbon–nitrogen (C–N) nanotube were synthesized the pyrolysis of ferrocene (Fe(C5H5)2) and sunflower oil mixtures with NH3 being the source of nitrogen. The concentration of NH3 was varying in volume (vol). Optimized temperature and concentration of ferrocene were 825°C and 10 mg/ml, respectively. With the increase of nitrogen concentration the bundles are breaking in nearly equal parts. With nitrogen doping, the nanotubes have a bamboo-like structure and reveal degraded crystallinity of graphitic sheets. Nitrogen plays key role in generating equal compartments inside the carbon nanotube. The nanotubes were characterized by scanning electron microscopy and transmission electron microscopy that reveal the vertically aligned and hollow structural features of the nanotubes. FTIR shows the incorporation of N atom inside carbon framework and Raman spectrum indicates the enhancement of the defects inside C–N nanotube due to the N atom in C–N nanotube.

[1]  T. Ebbesen,et al.  Exceptionally high Young's modulus observed for individual carbon nanotubes , 1996, Nature.

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

[3]  Jing Li,et al.  Effects of surfactant treatment on mechanical and electrical properties of CNT/epoxy nanocomposites , 2008 .

[4]  R. Li,et al.  Enhanced stability of Pt electrocatalysts by nitrogen doping in CNTs for PEM fuel cells , 2009 .

[5]  Shui-Tong Lee,et al.  SYNTHESIS AND CHARACTERIZATION OF AMORPHOUS CARBON NANOWIRES , 1999 .

[6]  T. Jimbo,et al.  Field emission property of N-doped aligned carbon nanotubes grown by pyrolysis of monoethanolamine , 2008 .

[7]  D. Zakharov,et al.  Carbon nanotubes from polyethylene precursors: Structure and structural changes caused by thermal and chemical treatment revealed by HREM , 1998 .

[8]  Pulickel M. Ajayan,et al.  Application of Carbon Nanotubes as Supports in Heterogeneous Catalysis , 1994 .

[9]  V. Kovalevski,et al.  Pyrolysis of hollow carbons on melted catalyst , 1998 .

[10]  S. Iijima.  Helical microtubules of graphitic carbon , 1991, Nature.

[11]  Zhongfan Liu,et al.  Cationic surfactant directed polyaniline/CNT nanocables: synthesis, characterization, and enhanced electrical properties , 2004 .

[12]  Qing Wang,et al.  The effects of CNT alignment on electrical conductivity and mechanical properties of SWNT/epoxy nanocomposites , 2008 .

[13]  J. Ting,et al.  Beaded carbon tubes , 1999 .

[14]  Zhong Lin Wang,et al.  Structure and growth of aligned carbon nanotube films by pyrolysis , 2000 .

[15]  R. Czerw,et al.  N-doping and coalescence of carbon nanotubes: synthesis and electronic properties , 2002 .

[16]  Yahachi Saito,et al.  Bamboo-shaped carbon tube filled partially with nickel , 1993 .

[17]  J. Jiao,et al.  Strings of spherical carbon clusters grown in a catalytic arc discharge , 1994 .