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.
Ferlauto, A. S., de Florio, D. Z., Fonseca, F. C., Esposito, V., Muccillo, R., Traversa, E., & Ladeira, L. O. (2006). Chemical vapour deposition of multi-walled carbon nanotubes from Nickel/yttria stabilize zirconia catalysts. Applied Physics A: Materials Science & Processing, 84, 271-276. https://doi.org/10.1007/s00339-006-3617-x