Revealing the Secret of Water-Assisted Carbon Nanotube Synthesis by Microscopic Observation of the Interaction of Water on the Catalysts

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• 作者：Takeo Yamada ; Alan Maigne ; Masako Yudasaka ; Kouhei Mizuno ; Don N. Futaba ; Motoo Yumura ; Sumio Iijima ; Kenji Hata
• 刊名：Nano Letters
• 出版年：2008
• 出版时间：December 10, 2008
• 年：2008
• 卷：8
• 期：12
• 页码：4288-4292
• 全文大小：219K
• 年卷期：v.8,no.12(December 10, 2008)
• ISSN：1530-6992

文摘

We elucidated the secret of water-assisted chemical vapor deposition (CVD) by elucidating the influence of water on the catalysts, through ex situ microscopic and spectroscopic analysis. We unambiguously showed that catalyst deactivation readily occurs due to carbon coating and that water acted to remove this coating and revive catalysts activity. This represents the central point of water-assisted CVD.