A Comparative Study of Various Supported Catalysts on the Growth of Aligned Carbon Nanotube Forests on Aluminum Foils

被引：7
|
作者：
Ummethala, Raghunandan [1 ]
Khavrus, Vyacheslav O. [1 ]
Leonhardt, Albrecht [1 ]
Buechner, Bernd [1 ]
Eckert, Juergen [1 ,2 ]
机构：
[1] IFW Dresden, D-01171 Dresden, Germany
[2] Tech Univ Dresden, Inst Mat Sci, D-01062 Dresden, Germany
来源：
CHEMICAL VAPOR DEPOSITION | 2012年 / 18卷 / 10-12期
关键词：
Carbon nanotubes; Growth morphology; Supported catalyst combinations; CHEMICAL-VAPOR-DEPOSITION; TEMPERATURE-PROGRAMMED-REDUCTION; NICKEL; COBALT; NANOPARTICLES; SUBSTRATE; ARRAYS; OXIDE; IRON; CELL;
D O I：
10.1002/cvde.201206991
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
The influence of a variety of supported catalyst combinations, Fe/Al2O3, Co/Al2O3, Ni/Al2O3, Fe/MnO, Co/MnO, and Ni/MnO, on the growth morphology of carbon nanotubes (CNTs) on aluminum foils is studied. CNT arrays are synthesized by thermal CVD at 645 degrees C using acetylene as the precursor. The morphology and distribution of the synthesized CNT arrays are analyzed by scanning electron microscopy (SEM). The chemical constitution of each combined catalyst is determined by performing X-ray diffraction (XRD) investigations on the decomposed and reduced catalysts. Thermodynamic calculations are performed to understand the correlation between the chemical state of the catalyst particles on the substrate and the morphology of the resulting nanotube arrays.
引用
收藏
页码：326 / 335
页数：10
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