Nano Archive

Large-scale production of multi-walled carbon nanotubes by low-cost spray pyrolysis of hexane

Sadeghian, Z (2009) Large-scale production of multi-walled carbon nanotubes by low-cost spray pyrolysis of hexane. New Carbon Materials, 24 (1). 33 - 38.

Full text is not hosted in this archive but may be available via the Official URL, or by requesting a copy from the corresponding author.

Official URL: http://www.sciencedirect.com/science/article/B8H10...

Abstract

Multi-walled carbon nanotubes (MWCNTs) were prepared by spray pyrolysis, using hexane as a carbon source and ferrocene as a catalyst precursor, followed by purification with acid leaching and air oxidation. The as-grown and purified MWCNTs were characterized by scanning electron microscopy, transmission electron microscopy, X-ray diffraction, energy dispersive spectroscopy, thermogravimetry, and Raman spectroscopy. The sublimation temperature of ferrocene, the ferrocene concentration in hexane, pyrolysis temperature and time, and the flow rate of hexane and H2 were optimized to obtain MWCNTs with a high quality and a high yield. The MWCNTs have a typical sausage-like structure and their lengths are more than several tens of micrometers. The inner and outer diameters of the MWCNTs were in the range of 15-45 and 25-70 nm, respectively. The purity and yield of the purified MWCNTs were more than 95% and 70% mass fraction, respectively.

Item Type:Article
Uncontrolled Keywords:Hexane; Spray pyrolysis; Large-scale production; Multi-walled carbon nanotubes
Subjects:Material Science > Nanofabrication processes and tools
Technology > Manufacturing processes for nanotechnology
ID Code:8638
Deposited By:SPI
Deposited On:25 Mar 2010 22:09
Last Modified:25 Mar 2010 22:09

Repository Staff Only: item control page