Nitrogen-Doped Carbon Nanotubes: Growth, Mechanism and Structure
Autor: | Justin P. O'Byrne, J. Andreas Larsson, Michael A. Morris, Peter G. Fleming, Zhonglai Li, Sarah L. T. Jones, Justin D. Holmes |
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Rok vydání: | 2011 |
Předmět: |
inorganic chemicals
Materials science Nitrogen Inorganic chemistry Selective chemistry of single-walled nanotubes chemistry.chemical_element Carbon nanotube law.invention Condensed Matter::Materials Science symbols.namesake X-ray photoelectron spectroscopy law Doping Physics::Chemical Physics Physical and Theoretical Chemistry Nanotubes Catalysts technology industry and agriculture Atomic and Molecular Physics and Optics Optical properties of carbon nanotubes chemistry Density functional theory symbols Condensed Matter::Strongly Correlated Electrons Carbon nanotube supported catalyst Raman spectroscopy Cobalt Carbon |
Zdroj: | ChemPhysChem. 12:2995-3001 |
ISSN: | 1439-4235 |
Popis: | Nitrogen‐doped bamboo‐structured carbon nanotubes have been successfully grown using a series of cobalt/molybdenum catalysts. The morphology and structure of the nanotubes were analysed by transmission electron microscopy and Raman spectroscopy. The level of nitrogen doping, as determined by X‐ray photoelectron spectroscopy, was found to range between 0.5 to 2.5 at. %. The growth of bamboo‐structured nanotubes in the presence of nitrogen, in preference to single‐walled and multi‐walled nanotubes, was due to the greater binding energy of nitrogen for cobalt in the catalyst compared to the binding strength of carbon to cobalt, as determined by density functional theory. |
Databáze: | OpenAIRE |
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