High-quality single-walled carbon nanotubes synthesis by hot filament CVD on Ru nanoparticle catalyst |
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Authors: | Fatima Z. BouanisLaurent Baraton Vincent HucDidier Pribat Costel S. Cojocaru |
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Affiliation: | a Laboratoire de physique des interfaces et couches minces UMR 7647 CNRS/ Ecole Polytechnique PALAISEAU, Franceb Laboratoire de Chimie inorganique LCI-ICMMO UMR 8182 - Bât. 420 Université Paris-Sud 11 Orsay, France |
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Abstract: | We investigated the single-walled carbon nanotubes (SWCNTs) growth on Ru nanoparticle catalyst via hot filament assisted chemical vapor deposition (HFCVD) with two independent W filaments for the carbon precursor (methane) and the hydrogen dissociation respectively. The Ru nanoparticles were obtained following a two-step strategy. At first the growth substrate is functionalized by silanisation, then a self assembly of a ruthenium porphyrin complex monolayer on pyridine-functionalized metal oxide substrates. We have studied the impact of the filaments power and we optimized the SWCNTs growth temperature. The as grown SWCNTs were characterized by scanning electron microscopy (SEM), atomic force microscopy (AFM) and Raman spectroscopy. It was found that the quality, density and the diameter of SWCNTs depends on the filament and growth temperature. Results of this study can be used to improve the understanding of the growth of SWCNTs by HFCVD. |
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Keywords: | Single walled carbon nanotubes (SWCNTs) Hot filament CVD Self assembled monolayer Ru nanoparticle Raman spectroscopy |
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