Title

Nanoparticle Decoration of Carbon Nanotubes by Sputtering

Document Type

Article

Publication Date

6-2013

Publication Source

Carbon

Abstract

Vapor phase growth of gold, nickel and titanium metal nanoparticles on multiwall carbon nanotube (MWCNT) buckypaper by sputtering was investigated. The size and distribution of nanoparticles was dependent on the intrinsic binding energy of the metal elements, but could be altered to mimic that of metals with different binding energies by in situ modification of the MWCNT surfaces by energetic metal ions or annealing of the buckypaper. A range of average gold particle diameters from approximately 5–30 nm could be produced depending on the intrinsic sputter process parameters (especially metal ion flux and kinetic energy) and defect density of the MWCNT surfaces, which could also be controlled by annealing prior to sputtering. The diameter of the MWCNTs had a significant influence on the geometry of the nanoparticles. Particles were elongated along the nanotube axis for tube diametersobserved, especially for MWCNTs with higher defect densities.

Inclusive pages

274–281

ISBN/ISSN

0008-6223

Comments

Permission documentation is on file.

Publisher

Elsevier

Volume

57

Peer Reviewed

yes