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Updated: Jul 9, 2026

Synthesis and Functionalization of Nitrogen-doped Carbon Nanotube Cups with Gold Nanoparticles as Cork Stoppers
Published on: May 13, 2013
Oxide-driven carbon nanotube growth in supported catalyst CVD
Mark H Rümmeli1, Franziska Schäffel, Christian Kramberger
1IFW Dresden, P.O. Box 270116, D-01171 Dresden, Germany. mhr1967@yahoo.com
Abstract:
Detailed HREM studies on carbon nanotubes (CNTs) synthesized via chemical vapor deposition (CVD) using nanoengineered Fe particles on oxide supports show capped tops and open-ended roots. We demonstrate that the pristine catalyst particle dictates the CNT diameter and number of walls at nucleation. The consecutive inward formation of concentric graphene caps during nucleation constricts and elongates the catalyst particle within the tube core. Continued growth stems from the oxide support.

