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Growth of Single‐Walled Carbon Nanotubes with Controlled Structure: Floating Carbide Solid Catalysts
Author(s) -
Qian Liu,
Xie Ying,
Yu Yue,
Wang Shanshan,
Zhang Shuchen,
Zhang Jin
Publication year - 2020
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.202002651
Subject(s) - carbon nanotube , carbonization , materials science , titanium carbide , catalysis , chemical vapor deposition , carbide , chemical engineering , decomposition , chirality (physics) , nanoparticle , carbon fibers , nanotechnology , silicon carbide , composite material , chemistry , organic chemistry , composite number , chiral symmetry , scanning electron microscope , physics , quantum mechanics , quark , nambu–jona lasinio model , engineering
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.