Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Effect of Growth Temperature on Bamboo-shaped Carbon–Nitrogen (C–N) Nanotubes Synthesized Using Ferrocene Acetonitrile Precursor | Nanoscale Res Lett 2009 4 197-203 DOI s11671-008-9225-2 NANO EXPRESS Effect of Growth Temperature on Bamboo-shaped Carbon-Nitrogen C-N Nanotubes Synthesized Using Ferrocene Acetonitrile Precursor Ram Manohar Yadav Pramod Singh Dobal T. Shripathi R. S. Katiyar O. N. Srivastava Received 7 October 2008 Accepted 24 November 2008 Published online 10 December 2008 to the authors 2008 Abstract This investigation deals with the effect of growth temperature on the microstructure nitrogen content and crystallinity of C-N nanotubes. The X-ray photoelectron spectroscopic XPS study reveals that the atomic percentage of nitrogen content in nanotubes decreases with an increase in growth temperature. Transmission electron microscopic investigations indicate that the bamboo compartment distance increases with an increase in growth temperature. The diameter of the nanotubes also increases with increasing growth temperature. Raman modes sharpen while the normalized intensity of the defect mode decreases almost linearly with increasing growth temperature. These changes are attributed to the reduction of defect concentration due to an increase in crystal planar domain sizes in graphite sheets with increasing temperature. Both XPS and Raman spectral observations indicate that the C-N nanotubes grown at lower temperatures possess higher degree of disorder and higher N incorporation. R. M. Yadav O. N. Srivastava Department of Physics Banaras Hindu University Varanasi 221005 India R. M. Yadav P. S. Dobal Department of Physics VSSD College Kanpur 208002 India e-mail rmanohar28@ T. Shripathi UGC-DAE Consortium for Scientific Research University Campus Khandwa Road Indore 452017 India R. S. Katiyar Department of Physics University of Puerto Rico San Juan PR USA Keywords Carbon nitrogen C-N nanotubes Bamboo-shaped nanotubes Spray pyrolysis Introduction Hollow and porous structures such as nanotubes of carbon and other inorganic materials have emerged as an intriguing class .
