AI Article Synopsis
- The study investigates how the duration of catalyst reduction with hydrogen (H2) affects the growth of carbon nanotubes (CNTs).
- It reveals that variations in catalyst reduction time influence CNT properties like height, growth rate, diameter, number of walls, and overall alignment.
- After 10 hours of treatment, highly aligned, double-walled CNT forests reaching 9 mm in height were successfully created, with catalyst characteristics playing a key role in this alignment.
Article Abstract
The pre-treatment (catalyst reduction with H2) time effect on the carbon nanotube (CNT) growth is reported. The total CNT height, the initial growth rate, the diameter, the number of walls, and the alignment in the CNT forests change with the catalyst reduction time. Densely packed, vertically super-aligned, double-walled CNT (DWCNT) forests with 9 mm height were synthesized in 10 hrs. We find that the density and the size of catalysts plays an important role in the alignment of the DWCNT forests, which is evidenced by atomic force microscopy (AFM), scanning electron microscopy (SEM), transmission electron microscopy (TEM), and Raman spectroscopy.
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| http://dx.doi.org/10.1166/jnn.2011.3210 | DOI Listing |
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