Organized growth of carbon nanotubes on Fe-doped alumina ceramic substrates

被引：14
|
作者：
Suvaci, Ender [1 ]
Celik, Yasemin [1 ]
Weibel, Alicia [2 ]
Peigney, Alain [2 ]
Flahaut, Emmanuel [2 ,3 ]
机构：
[1] Anadolu Univ, Dept Mat Sci & Engn, TR-26480 Eskisehir, Turkey
[2] Univ Toulouse, UPS, INP, Inst Carnot Cirimat, F-31062 Toulouse 9, France
[3] CNRS, Inst Carnot Cirimat, F-31062 Toulouse, France
来源：
CARBON | 2012年 / 50卷 / 08期
关键词：
Chemical vapor deposition - Iron compounds - Nanoparticles - Yarn - Ceramic materials - Aluminum oxide - Alumina - Carbon nanotubes - Iron;
D O I：
10.1016/j.carbon.2012.02.034
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Polycrystalline Fe-doped alumina (Al2O3) ceramics have been produced and used as a substrate for organized carbon nanotubes (CNTs) growth by catalytic chemical vapor deposition (CCVD). In these substrates, Fe3+ cations, which are the catalyst source, are initially substituted to Al3+ in alpha-Al2O3, instead of being simply deposited as a thin Fe layer on the surface of the substrate. The selective reduction of these substrates resulted in in situ formation of homogeneously distributed Fe nanoparticles forming patterns at nanometer-scale steps and kinks. These nanoparticles then catalyzed the growth of high quality CNTs, with some degree of organization thanks to their interaction with the topography of the substrate. (C) 2012 Elsevier Ltd. All rights reserved.
引用
收藏
页码：3092 / 3095
页数：4
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