Monodisperse multiwall carbon nanotubes obtained with ferritin as catalyst

被引:72
作者
Bonard, JM [1 ]
Chauvin, P [1 ]
Klinke, C [1 ]
机构
[1] Ecole Polytech Fed Lausanne, Inst Phys Nanostruct, Fac Sci Base, CH-1015 Lausanne, Switzerland
关键词
D O I
10.1021/nl0255606
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
The iron-containing cores of ferritin were used as catalyst for the growth of patterned films of multiwall carbon nanotubes by chemical vapor deposition of C2H2 at 720degreesC. The catalyst was delivered onto SiO2/Si substrates by microcontact printing and onto SiO/Cu transmission electron microscopy grids by dipping. The adjunction of Al(NO3)(3).9H(2)O to ferritin has proven to be essential to prevent diffusion and coalescence of the catalyst particles and allows to produce monodisperse carbon nanotubes with an outer diameter of 5.2 +/- 0.6 nm, which represents a significant improvement compared to existing solutions.
引用
收藏
页码:665 / 667
页数:3
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