Ferlauto, A. S.De Florio, D. Z.Fonseca, F. C.Esposito, V.Muccillo, R.Traversa, E.Ladeira, L. O.2014-05-202014-05-202006-08-01Applied Physics A-materials Science & Processing. New York: Springer, v. 84, n. 3, p. 271-276, 2006.0947-8396http://hdl.handle.net/11449/34032Multi-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.271-276engArtigo10.1007/s00339-006-3617-xWOS:000238292600009Acesso restrito