Carbon Nanotubes Encapsulated in Wormlike Hollow Silica Shells
- 29 August 2006
- Vol. 2 (10), 1174-1177
- https://doi.org/10.1002/smll.200600152
Abstract
The worm turns: Carbon nanotubes (CNTs) are encapsulated within predesigned, wormlike, hollow silica capsules (see image). The preparation strategy comprises a two-step process; silica coating of the CNTs is followed by selective dissolution from the inside out. The silica coating involves the initial deposition of a thinner shell at low pH values, followed by the growth of an outer shell at higher pH values, with a controlled thickness that determines the final outer diameter of the capsule.Keywords
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