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Catalyst free growth of a carbon nanotube-alumina composite structure |
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| Authors: | Jö rg J. Schneider,Nadezda I. Maksimova,Ravi Joshi,Rudolf Feile |
| Affiliation: | a Fachbereich Chemie, Eduard-Zintl-Institut für Anorganische und Physikalische Chemie, Technische Universität Darmstadt, 64287 Darmstadt, Germany b Fachbereich Material- und Geowissenschaften, Technische Universität Darmstadt. Petersenstraße 23, 64287 Darmstadt, Germany c Fachbereich Physik, Institut für Festkörperphysik, Technische Universität Darmstadt, Hochschulstraße 8, 64289 Darmstadt, Germany |
| Abstract: | Aligned arrays of multiwall carbon tubes (CNTs) were prepared within cylindrical pores of compact porous anodic aluminum oxide (PAOX) by a non-catalytic chemical vapor deposition (CVD) method. Optimum CNT synthesis conditions were determined for two crucial reaction parameters, e.g. the precursor gas flow and the reaction time for a given fixed reaction temperature. Gas phase oxidation followed by a wet chemical dissolution allows selective removal of carbon by-products from the surface of the CNT/PAOX composite without destroying its structure. The developed procedure opens up the way to obtain CNT/alumina composites with open, 2D arranged pores by a selective gas phase and solution chemical etching technique. |
| Keywords: | Carbon nanotubes Aluminium oxide Porous template CVD |
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