Morphology-Controllable CVD Synthesis of Carbon Nanomaterials on an Alkali-Element-Doped Cu Catalyst

✍ Scribed by X. Tao; X. Zhang; J. Cheng; F. Liu; J. Luo; Z. Luo

• Publisher: John Wiley and Sons
• Year: 2006
• Tongue: English
• Weight: 438 KB
• Volume: 12
• Category: Article
• ISSN: 0948-1907
• DOI: 10.1002/cvde.200506450

✦ Synopsis

Abstract

Several categories of carbon nanomaterials have been synthesized using an alkali element‐doped Cu catalyst by a simple CVD method. By controlling the reaction temperature, various products such as multibranched carbon nanotubes, carbon nanotubes filled with Cu nanocones at the tips (Cu‐CNTs), and Cu‐CNTs with carbon nanofiber tails can be obtained. Field‐emission scanning electron microscopy (FESEM), transmission electron microscopy (TEM), and high‐resolution (HR)TEM have been employed to characterize the products. It is proposed that the alkali‐element doping changes the electronic structure of the copper catalyst. The activity of the alkali‐element‐doped Cu catalyst shows dependence on the temperature.