Pt atoms Carbon nanotube Density functional calculations Substrate-mediated interactions
Issue Date:
2009
Publisher:
Physical Review B - Condensed Matter and Materials Physics
Citation:
Volume: 79, Issue: 11, Art. No.: 115426, Link: Scorpus Link
Abstract:
In this study, we perform density functional calculations to investigate the interplay between
single-wall carbon nanotube (SWNT) supports and adsorbed Pt atoms. We found that adsorption of Pt atoms
on SWNTs is found to depend heavily on the curvature of SWNTs. The supporting SWNTs mediate and
enhance the range of interactions between Pt adatoms. The long-range interactions originate from the
structural deformation of the tube and the complex electronic states formed during the adsorption.
Furthermore, these SWNT-mediated interactions significantly modify the diffusion barriers of Pt adatoms on
the tube surface. ?? 2009 The American Physical Society.
