Attachment of Metal Oxide Nanoparticles on Carbon Nanotubes with Different Oxidation Levels

Abstract:

An efficient surface modification technique for fabricating tin dioxide/carbon composite nanotubes has been developed. This technique combines with implantation of acidic groups, interaction between surface oxides and metal ions or hydration molecules, and thermal. To functionalize multi-layered carbon nanotubes (CNTs), gaseous oxidation at 300°C was used to build functional oxygen groups including carboxyl, carbonyl and hydroxyl group, on ends or sidewalls of CNTs. X-ray photoelectron spectroscopy clearly indicated that the atomic ratio of attached tin-oxide on the oxidized CNTs gradually increases with the oxidation level, i.e., surface O/C atomic ratio. This evidence reflected that the surface oxides act as an adsorption center that strongly interacts with metal ions or hydration molecules in aqueous phase.

• Periodical: Advanced Materials Research (Volumes 55-57)
• Pages: 545-548
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.55-57.545
• Online since: August 2008
• Authors: Chien Te Hsieh, J.Y. Lin
• Keywords: Carbon Nanotube (CN), Surface Modification, Surface Oxides, TiN Oxide Nano Particles

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