Chemical vapor deposition of multi-walled carbon nanotubes from nickel/yttria-stabilized zirconia catalysts

被引：28
作者：
Ferlauto, A. S.
De Florio, D. Z.
Fonseca, F. C.
Esposito, V.
Muccillo, R.
Traversa, E.
Ladeira, L. O.
机构：
[1] Univ Fed Minas Gerais, Dept Fis, BR-31270901 Belo Horizonte, MG, Brazil
[2] UNESP, Inst Quim, BR-14801970 Araraquara, SP, Brazil
[3] IPEN, BR-05508170 Sao Paulo, Brazil
[4] Univ Roma Tor Vergata, Dipartimento Sci & Tecnol Chim, I-00133 Rome, Italy
来源：
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING | 2006年 / 84卷 / 03期
关键词：
D O I：
10.1007/s00339-006-3617-x
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
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 (> 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.
引用
收藏
页码：271 / 276
页数：6
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