| Revealing the Impact of Catalyst Phase Transition on Carbon Nanotube Growth by In Situ Raman Spectroscopy. | |
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MedLine Citation:
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PMID: 23343776 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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The physical state of the catalyst and its impact on the growth of single-walled carbon nanotubes (SWNTs) is the subject of a long-standing debate. We addressed it here using in situ Raman spectroscopy to measure Fe and Ni catalyst lifetimes during the growth of individual SWNTs across a wide range of temperatures (500 - 1400 ºC). The temperature dependence of the Fe catalyst lifetimes underwent a sharp increase around 1100 ºC due to a solid to liquid phase transition. By comparing experimental results with the metal-carbon phase diagrams, we prove that SWNTs can grow from solid and liquid phase-catalysts, depending on the temperature. |
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Authors:
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Rahul Rao; Neal Pierce; David Liptak; Daylond Hooper; Gordon Sargent; Sl Semaitin; Stefano Curtarolo; Avetik R Harutyunyan; Benji Maruyama |
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Publication Detail:
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Type: JOURNAL ARTICLE Date: 2013-1-24 |
Journal Detail:
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Title: ACS nano Volume: - ISSN: 1936-086X ISO Abbreviation: ACS Nano Publication Date: 2013 Jan |
Date Detail:
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Created Date: 2013-1-24 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 101313589 Medline TA: ACS Nano Country: - |
Other Details:
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Languages: ENG Pagination: - Citation Subset: - |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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