Artículo
Escobar, M.; Rubiolo, G.H.; Moreno, M.S.; Goyanes, S.; Candal, R. "Influence of tungsten on the carbon nanotubes growth by CVD process" (2009) Journal of Alloys and Compounds. 479(1-2):440-444
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Abstract:
The effect of tungsten (W) on the growth of multi-walled carbon nanotubes (MWNTs) using the chemical vapour deposition (CVD) process over a metal Fe-W catalyst incorporated into a silica matrix is reported. A W molar content in Fe/SiO2 up to 10% was studied. The incorporation of only 2% of W substantially modifies the crystalline phases and the crystalline degree of the catalyst during the MWNTs synthesis. This fact seems to have a strong influence on the type and yield of the carbonaceous species obtained by the CVD of acetylene, at 600 °C and 180 Torr, over each catalyst. Tungsten interacts with iron within the matrix, diminishing the catalytic activity of the metal nanoparticles, and both, carbon nanotubes and carbon nanofibers, are obtained when tungsten is present. The results obtained support the hypothesis of a base growth model for carbon nanotubes indicating a strong interaction between silica matrix and Fe/W nanoparticles, independently of the content of W. © 2009 Elsevier B.V. All rights reserved.
Registro:
| Documento: | Artículo |
| Título: | Influence of tungsten on the carbon nanotubes growth by CVD process |
| Autor: | Escobar, M.; Rubiolo, G.H.; Moreno, M.S.; Goyanes, S.; Candal, R. |
| Filiación: | Instituto de Fisicoquímica de Materiales, Ambiente y Energía, CONICET-UBA, Pabellón II, (1428) Bs As, Argentina LP and MC, Dep. De Física, FCEyN-UBA, Pabellón 1, (1428) Bs As, Argentina Centro Atómico Bariloche, 8400 S.C. de Bariloche, Rio Negro, Argentina Unidad de Actividad Materiales, CNEA, Av. Gral. Paz, 1499 San Martin (1650), Bs As, Argentina |
| Palabras clave: | Carbon nanotubes; Chemical vapor deposition; Tungsten; Catalytic activities; Chemical vapour depositions; Crystalline degrees; Crystalline phasis; Cvd process; Growth models; matrixes; Metal nanoparticles; Molar contents; Multi-walled carbon nanotubes; Silica matrices; Strong interactions; Acetylene; Carbon nanofibers; Catalysis; Catalysts; Chemical vapor deposition; Crystalline materials; Lighting; Multiwalled carbon nanotubes (MWCN); Nanoparticles; Silica; Tungsten; Vapors; Carbon nanotubes |
| Año: | 2009 |
| Volumen: | 479 |
| Número: | 1-2 |
| Página de inicio: | 440 |
| Página de fin: | 444 |
| DOI: | http://dx.doi.org/10.1016/j.jallcom.2008.12.104 |
| Título revista: | Journal of Alloys and Compounds |
| Título revista abreviado: | J Alloys Compd |
| ISSN: | 09258388 |
| CODEN: | JALCE |
| Registro: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_09258388_v479_n1-2_p440_Escobar |
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Citas:
---------- APA ----------
Escobar, M., Rubiolo, G.H., Moreno, M.S., Goyanes, S. & Candal, R. (2009) . Influence of tungsten on the carbon nanotubes growth by CVD process. Journal of Alloys and Compounds, 479(1-2), 440-444.http://dx.doi.org/10.1016/j.jallcom.2008.12.104
---------- CHICAGO ----------
Escobar, M., Rubiolo, G.H., Moreno, M.S., Goyanes, S., Candal, R. "Influence of tungsten on the carbon nanotubes growth by CVD process" . Journal of Alloys and Compounds 479, no. 1-2 (2009) : 440-444.http://dx.doi.org/10.1016/j.jallcom.2008.12.104
---------- MLA ----------
Escobar, M., Rubiolo, G.H., Moreno, M.S., Goyanes, S., Candal, R. "Influence of tungsten on the carbon nanotubes growth by CVD process" . Journal of Alloys and Compounds, vol. 479, no. 1-2, 2009, pp. 440-444.http://dx.doi.org/10.1016/j.jallcom.2008.12.104
---------- VANCOUVER ----------
Escobar, M., Rubiolo, G.H., Moreno, M.S., Goyanes, S., Candal, R. Influence of tungsten on the carbon nanotubes growth by CVD process. J Alloys Compd. 2009;479(1-2):440-444.http://dx.doi.org/10.1016/j.jallcom.2008.12.104
