Article Sidebar
Published:
Oct 13, 2015Keywords:
Article Details
Copyright for articles published in this journal is retained by the journal.
SAJChem applies the Creative Commons Attribution (CC BY) license to manuscripts we publish. This license was developed to facilitate open access – namely, free immediate access to, and unrestricted reuse of, original works of all types. Under this license, authors agree to make articles legally available for reuse, without permission or fees, for virtually any purpose. Anyone may copy, distribute or reuse these articles, as long as the author and original source are properly cited.
Main Article Content
Synthesis of Nitrogen-doped Carbon Nanotubes with Layered Double Hydroxides Containing Iron, Cobalt or Nickel as Catalyst Precursors
Abstract
Nitrogen-doped carbon nanotubes (CNx) were synthesized by the catalytic chemical vapour deposition of ethylenediamine with layered double hydroxides (LDHs) containing iron, cobalt or nickel as catalyst precursors at 650 °C. The catalytically active metal particles were obtained by calcination of LDHs followed by reduction. X-ray diffraction was used to characterize the structures of the precursors and their calcined products. Transmission electron microscopy, X-ray photoelectron spectroscopy and Raman spectroscopy were used to characterize the grown CNx. The results show that the CNx grown with Mg2Fe-LDH as catalyst precursor have a bamboo-like morphology and large diameter, while hollow tubes are obtained with CoMgAl- andNiMgAl-LDH as catalyst precursors. The CNx grown with CoMgAl-LDH have the highest N-doped content and the CNx grown with NiMgAl-LDH have the highest degree of graphitization among these three products.
Keywords: N-doped Carbon Nanotubes, Layered Double Hydroxides, Chemical Vapour Deposition
