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Electronic, chemical and structural characterization of CNTs grown by acetylene decomposition over MgO supported Fe-Co bimetallic catalysts |
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| Authors: | A Policicchio G Chiarello V Formoso RG Agostino D Gournis |
| Institution: | a CNISM-Dipartimento di Fisica, Università della Calabria, Ponte Bucci, Cubo 33c, I-87036 Arcavacata di Rende (CS), Italy b Department of Materials Science and Engineering, University of Ioannina, GR-45110 Ioannina, Greece c Sincrotrone Trieste, S. S. 14km 163.5, in Area Science Park, I-34012 Basovizza-Trieste, Italy d LICRYL - Liquid Crystal Laboratory, INFM-CNR c/o Dipartimento di Fisica, Università della Calabria, Ponte Bucci, Cubo 33c, I-87036 Arcavacata di Rende (CS), Italy |
| Abstract: | The electronic and chemical structure of carbon nanotubes synthesized by decomposition of acetylene over Fe-Co bimetallic catalysts in different growth conditions, were analyzed by valence band photoelectron spectroscopy and scanning electron microscopy. A clear relationship between the bonding features and the growth condition allowed us to determine the key parameters in terms of temperature, growth time and catalyst content. Furthermore, the analysis allowed a determination of the byproducts. |
| Keywords: | Carbon nanotubes Catalytical chemical vapor deposition (CCVD) Photoelectron spectroscopy Scanning electron microscopy (SEM) |
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