In-Situ Deposition of Nickel Nanoparticles on Carbon Nanotubes by Spray Pyrolysis
Por:
Gomez J., Verde Y., Lara-Romero J., Alonso-Nunez G.
Publicada:
1 ene 2009
Resumen:
Nickel nanoparticles have been deposited on carbon nanotubes by spray pyrolysis of toluene as carbon source and nickelocene as catalyst at different temperatures. The optimum temperature to produce well-grown Ni/carbon nanotubes was found to be 850 degrees C. The carbon nanotubes were characterized by SEM, TEM, XRD, Raman spectroscopy and TGA-DTA. The microscopy studies show that the produced carbon nanotubes have disorder morphologies with diameters between 60 and 100 nm and lengths of a few hundred microns. Ni particles of 40 nm are well dispersed along the carbon nanotubes. XRD patterns show the crystalline planes corresponding to graphite and metallic Ni. The TGA-DTA results indicate a Ni loading of 20wt%. Raman spectroscopy reveals that the grown carbon nanotubes are graphitized, showing both the D and G bands at 1330 cm(-1) and 1590 cm(-1), respectively. The corresponding intensity ratio of these bands (ID/I(G)) varies with respect to synthesis temperature and catalyst concentrat
Filiaciones:
Gomez J.:
Centro de Investigación en Materiales Avanzados, Chihuahua, Mexico
Verde Y.:
Instituto Tecnológico de Cancún, Cancú, Quintana Roo, 77500, Mexico
Lara-Romero J.:
Facultad de Ingenieria Quimica, UMSNH, Morelia, Mexico
Alonso-Nunez G.:
UNAM, Ctr Nanociencias & Nanotecnol, Ensenada, Baja California, Mexico
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