Chemical vapour deposition of multi-walled carbon nanotubes from Nickel/yttria stabilize zirconia catalysts

A.S. Ferlauto, D.Z. de Florio, F.C. Fonseca, Vincenzo Esposito, R. Muccillo, E. Traversa, L.O. Ladeira

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

ABSTRACTMulti-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 (> 50 wt.%). 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 languageEnglish
JournalApplied Physics A: Materials Science & Processing
Volume84
Pages (from-to)271-276
ISSN0947-8396
DOIs
Publication statusPublished - 2006
Externally publishedYes

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