Journal
SCIENCE
Volume 306, Issue 5700, Pages 1362-1364Publisher
AMER ASSOC ADVANCEMENT SCIENCE
DOI: 10.1126/science.1104962
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We demonstrate the efficient chemical vapor deposition synthesis of single-waited carbon nanotubes where the activity and lifetime of the catalysts are enhanced by water. Water-stimulated enhanced catalytic activity results in massive growth of superdense and vertically aligned nanotube forests with heights up to 2.5 millimeters that can be easily separated from the catalysts, providing nanotube material with carbon purity above 99.98%. Moreover, patterned, highly organized intrinsic nanotube structures were successfully fabricated. The water-assisted synthesis method addresses many critical problems that currently plague carbon nanotube synthesis.
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