Abstract
Multi-walled carbon nanotubes (MWNT) were produced by chemical vapor deposition using yttria-stabilized zirconia/nickel (YSZ/Ni) catalysts. The catalysts were obtained by a liquid mixture technique that resulted in fine dispersed nanoparticles of NiO supported in the YSZ matrix. High quality MWNT having smooth walls, few defects, and low amounts of by-products such as amorphous carbon were obtained, even from catalysts with large Ni concentrations (>50wt.∈%). By adjusting the experimental parameters, such as flux of the carbon precursor (ethylene) and Ni concentration, both the MWNT morphology and the process yield could be controlled. The resulting YSZ/Ni/MWNT composites can be interesting due to their mixed ionic-electronic transport properties, which could be useful in electrochemical applications.
Original language | English (US) |
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Pages (from-to) | 271-276 |
Number of pages | 6 |
Journal | Applied Physics A: Materials Science and Processing |
Volume | 84 |
Issue number | 3 |
DOIs | |
State | Published - Aug 2006 |
Externally published | Yes |
ASJC Scopus subject areas
- General Chemistry
- General Materials Science