Regensburg 2010 – wissenschaftliches Programm
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MM: Fachverband Metall- und Materialphysik
MM 54: Nanostructured Materials V
MM 54.1: Vortrag
Donnerstag, 25. März 2010, 15:15–15:30, H16
Understanding the growth mechanism of carbon nanotubes via the "cluster volume to surface area" model — •Sreekanth Mandati1,2, Jens Kunstmann1, Felix Börrnert3, Ronny Schönfelder3, Mark Rümmeli3, Kamal K. Karb2, and Gianaurelio Cuniberti1 — 1Institute for Materials Science and Max Bergmann Center of Biomaterials, Dresden University of Technology, Germany — 2Indian Institute of Technology, Kanpur, India — 3Institute for Solid State Research, IFW Dresden, Germany
The influence of mixed catalysts for the high yield production of carbon nanotubes (CNTs) has been studied systematically. Based on extensive experimental data a "Catalyst Volume to Surface Area" (CVSA) model was developed to understand the influence of the process parameters on the yield and CNT diameter distribution [1]. In our study, we present a refined version of the CVSA model developed by combining experiments and simulations. We discuss our current understanding of the growth mechanism and how the model might be used to increase CNT yields by using mixed catalysts. [1] S. Tetali et al., ACS Nano (2009), DOI: 10.1021/nn9012548.