The effect of process variables on the characteristics of carbon nanotubes obtained by spray pyrolysis |
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Authors: | Mariane C Schnitzler Aldo J G Zarbin |
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Institution: | (1) Departamento de Química, Universidade Federal do Paraná, CP 19081, CEP 81531-990 Curitiba, PR, Brazil |
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Abstract: | A simple spray pyrolysis setup is used to grow multi-walled carbon nanotubes (MWCNTs), from a ferrocene solution in benzene
as precursor. The effects of process variables such as growth temperature, position of the aerosol generator and position
in the reactor where the sample was formed were investigated. These variables have a strong influence on the graphitization
degree, homogeneity, diameter and alignment of the nanotubes, as observed by TEM, SEM, XRD and Raman spectroscopy. Vertically
aligned MWCNT arrays with high density were obtained in large areas (10 × 10 mm2), with high yield (2.1 mg cm−2) and at a growth rate at 1.43 μm min−1, by a suitable choice of the experimental conditions. |
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Keywords: | Carbon nanotubes Spray pyrolysis Nanomaterials Characterization MWCNT |
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