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Modified carbon nanotubes: an effective way to selective attachment of gold nanoparticles

✍ Scribed by Linqin Jiang; Lian Gao

Publisher
Elsevier Science
Year
2003
Tongue
English
Weight
943 KB
Volume
41
Category
Article
ISSN
0008-6223

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✦ Synopsis

Through various modifications of carbon nanotubes (CNTs), gold nanoparticles were selectively attached to the nanotube and the locations of functional groups were further confirmed. Using cationic polyethyleneamine or anionic citric acid as the dispersant, the surface properties of CNTs could be changed to yield a basic or acidic surface. By electrostatic interaction, the CNTs could be successfully coated with about 10 nm gold nanoparticles. After heat treatment in NH , about 1-2 nm 3 gold nanocluster-filled nanotubes were achieved. This shows that the heat treatment with NH could make CNTs open-ended 3 and generate functional basic groups on the inner wall of the nanotubes.

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## Abstract **Are you in?** Bimetallic PtRu nanoparticles have been selectively confined inside or deposited outside carbon nanotubes (see picture). The confined nanoparticles display significantly higher selectivity and catalytic activity in hydrogenation reactions.magnified image