Bulletin of the American Physical Society
APS March Meeting 2010
Volume 55, Number 2
Monday–Friday, March 15–19, 2010; Portland, Oregon
Session A30: Focus Session: Carbon Nanotubes: Chirality-Controlled Growth of Carbon Nanotubes and Nanostructures
8:00 AM–11:00 AM,
Monday, March 15, 2010
Sponsoring Unit: FIAP
Chair: David Geohegan, Oak Ridge National Laboratory
Abstract ID: BAPS.2010.MAR.A30.9
Abstract: A30.00009 : Oxidized dahlia-like carbon nanohorns: adsorption of argon, methane and nitrogen*
10:48 AM–11:00 AM
Preview Abstract Abstract
(Department of Physics, Southern Illinois University)
(National Institute of Advanced Industrial Science and Technology)
Different types of nanohorns, and nanohorn aggregates, can be produced depending on the parameters used during their production. We used a sample consisting mainly of dahlia-like nanohorn aggregates. In the dahlia-like aggregates the individual nanohorns are aligned radially, forming a sphere, with their individual ends protruding from the outer surface of the spherule. Our sample was oxidized by flowing pure oxygen. This treatment opened entry ports into the spaces at the interior of the individual nanohorns. We measured volumetric adsorption isotherms at 77.3 K with argon, methane, and nitrogen. For argon and methane two distinct substeps are present in the adsorption data; the steps for each of these two gases are comparable in size. For nitrogen there is a clear step present at lower adsorbent loadings, and a more gradual growth in the amount adsorbed as saturation is approached.
*This research supported by NSF grant \# DMR-0705077.
To cite this abstract, use the following reference: http://meetings.aps.org/link/BAPS.2010.MAR.A30.9
The American Physical Society (APS) is a non-profit membership organization working to advance the knowledge of physics.
1 Physics Ellipse, College Park, MD 20740-3844
Editorial Office 1 Research Road, Ridge, NY 11961-2701 (631) 591-4000
Office of Public Affairs 529 14th St NW, Suite 1050, Washington, D.C. 20045-2001 (202) 662-8700