Efficient carbon nanotube sponges production boosted by acetone in CVD-Synthesis
"A high production of nitrogen-doped carbon nanotube sponges (N-CNS) was obtained at 1020 °C with 4 h of growth in an aerosol-assisted chemical vapor deposition (AACVD) experiment modified with two independent sprayers feeding the reactor. Sprayer-1 contained a solution made of benzylamine, fer...
| Autores: | , , |
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| Tipo de recurso: | artículo |
| Estado: | Versión enviada para evaluación y publicación |
| Fecha de publicación: | 2018 |
| País: | México |
| Institución: | Instituto Potosino de Investigación Científica y Tecnológica |
| Repositorio: | Repositorio Institucional del IPICYT |
| OAI Identifier: | oai:ipicyt.repositorioinstitucional.mx:1010/1709 |
| Acceso en línea: | http://ipicyt.repositorioinstitucional.mx/jspui/handle/1010/1709 |
| Access Level: | acceso embargado |
| Palabra clave: | info:eu-repo/classification/cti/2 info:eu-repo/classification/cti/23 |
| Sumario: | "A high production of nitrogen-doped carbon nanotube sponges (N-CNS) was obtained at 1020 °C with 4 h of growth in an aerosol-assisted chemical vapor deposition (AACVD) experiment modified with two independent sprayers feeding the reactor. Sprayer-1 contained a solution made of benzylamine, ferrocene, and thiophene; sprayer-2 contained a solution made of ethanol-acetone, ferrocene, and thiophene. N-CNS were produced with three different acetone concentrations and collected along the reactor. The N-CNS were characterized using scanning electron microscopy (SEM), thermogravimetric analysis (TGA), high resolution transmission electron microscopy (HRTEM), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), and Raman spectroscopy. The main trends that were found when adding acetone as a precursor are: (1) an increase of the carbon fiber diameters; (2) favored the formation of Fe3C nanoparticles that were encrusted into the outermost layers of the carbon fibers; (3) a reduction of the oxidation temperature; and (4) a decrease in the oxygen content. The nitrogen concentration in N-CNS was approximately 3% w/w and is exhibited in mainly pyrrolic, pyridinic, and quaternary fashions. The N-CNS showed super hydrophobic and oleophilic properties. The absorption capacities were tested for various organic solvents." |
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