The synergistic effect in the Fe-Co bimetallic catalyst system for the growth of carbon nanotube forests

被引：17

作者：

Hardeman, D. ^{[1
]}

Esconjauregui, S. ^{[1
]}

Cartwright, R. ^{[1
]}

Bhardwaj, S. ^{[2
]}

D'Arsie, L. ^{[1
]}

Oakes, D. ^{[3
]}

Clark, J. ^{[3
]}

Cepek, C. ^{[2
]}

Ducati, C. ^{[4
]}

Robertson, J. ^{[1
]}

机构：

[1] Univ Cambridge, Dept Engn, Cambridge CB3 0FA, England

[2] CNR, Ist Officina Mat, Lab TASC, I-34149 Trieste, Italy

[3] Johnson Matthey Technol Ctr, Sonning Common RG4 9NH, Berks, England

[4] Univ Cambridge, Dept Mat Sci & Met, Cambridge CB3 0FS, England

来源：

JOURNAL OF APPLIED PHYSICS | 2015年 / 117卷 / 04期

基金：

英国工程与自然科学研究理事会;

关键词：

CHEMICAL-VAPOR-DEPOSITION; IN-SITU; IRON; NANOPARTICLES; SUPPORT;

D O I：

10.1063/1.4906846

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We report the growth of multi-walled carbon nanotube forests employing an active-active bimetallic Fe-Co catalyst. Using this catalyst system, we observe a synergistic effect by which-in comparison to pure Fe or Co-the height of the forests increases significantly. The homogeneity in the as-grown nanotubes is also improved. By both energy dispersive spectroscopy and in-situ x-ray photoelectron spectroscopy, we show that the catalyst particles consist of Fe and Co, and this dramatically increases the growth rate of the tubes. Bimetallic catalysts are thus potentially useful for synthesising nanotube forests more efficiently. (C) 2015 AIP Publishing LLC.

引用

页数：7

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