Journal
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
Volume 59, Issue 27, Pages 10884-10887Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.202002651
Keywords
chirality; electron microscopy; nanotubes; solid-state catalysts; titanium carbide
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Funding
- Ministry of Science and Technology of the People's Republic of China [2016YFA0200101, 2016YFA0200104, and 2018YFA0703502, 2016YFA0200101 and 2016YFA0200104] Funding Source: Medline
- National Natural Science Foundation of China [21790052 and 51720105003, 51432002, 21790052, and 51720105003] Funding Source: Medline
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Single-walled carbon nanotube (SWNT) horizontal arrays with specific chirality can be enriched using solid carbide catalysts on substrates. However, scale-up production by continuous loading of the solid catalysts onto the substrates is challenging. Described here is the preparation of a floating carbide solid catalyst (FSC) for the controlled growth of SWNTs. The FSC, titanium carbide (TiC) nanoparticle, was directly obtained in the carrier gas phase by decomposition and carbonization of the titanocene dichloride precursor at high temperature. By using the TiC nanoparticle FSC, both SWNT horizontal arrays and randomly distributed networks can be obtained. The chirality of the as-grown SWNTs were thermodynamically controlled to have fourfold symmetry. Further optimization of growth condition resulted in an abundance of (16,8) tubes with about a 74 % content. This FSC chemical vapor deposition (FSCCVD) method has potential for realizing mass growth of SWNTs with controlled structures.
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