Influence of a Top Crust of Entangled Nanotubes on the Structure of Vertically Aligned Forests of Single-Walled Carbon Nanotubes

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• 作者：Liang Zhang ; Zhongrui Li ; Yongqiang Tan ; Giulio Lolli ; Nataphan Sakulchaicharoen ; Fé ; lix G. Requejo ; B. Simon Mun ; Daniel E. Resasco
• 刊名：Chemistry of Materials
• 出版年：2006
• 出版时间：November 14, 2006
• 年：2006
• 卷：18
• 期：23
• 页码：5624 - 5629
• 全文大小：775K
• 年卷期：v.18,no.23(November 14, 2006)
• ISSN：1520-5002

文摘

The time evolution of the growth process of vertically aligned single-walled carbon nanotubes (orV-SWNTs) on a flat substrate was examined by scanning electron microscopy (SEM), resonant Ramanspectroscopy, and angle-resolved X-ray absorption near-edge structure (XANES). This detailedcharacterization gives evidence for the growth of a thin layer (crust) of randomly oriented single-walledcarbon nanotubes during the first stages of the growth process. This crust is responsible for the uniqueforest-like morphology exhibited by this type of SWNT structure.