Selective Aggrevation of Single-Walled Carbon Nanotubes via Salt Addition

doi:10.1021/ja068321j

Self-formation of highly aligned metallic, semiconducting and single chiral single-walled carbon nanotubes assemblies via a crystal template method

Kawai, Hideki ; Hasegawa, Kai ; Yanagi, Kazuhiro, E-mail: yanagi-kazuhiro@tmu.ac.jp ; ... September 2014 - Applied Physics Letters

The fabrication of an aligned array of single-walled carbon nanotubes (SWCNTs) with a single chiral state has been a significant challenge for SWCNT applications as well as for basic science research. Here, we developed a simple, unique technique to produce assemblies in which metallic, semiconducting, and single chiral state SWCNTs were densely and highly aligned. We utilized a crystal of surfactant as a template on which mono-dispersed SWCNTs in solution self-assembled. Micro-Raman measurements and scanning electron microscopy measurements clearly showed that the SWCNTs were highly and densely aligned parallel to the crystal axis, indicating that approximately 70% of the SWCNTsmore »« less
DOI: 10.1063/1.4895103
Selective Synthesis of Subnanometer Diameter Semiconducting Single-Walled Carbon Nanotubes

Loebick, C. ; Podila, R ; Reppert, J ; ... January 2010 - Journal of the American Chemical Society

Subnanometer single-walled carbon nanotubes (sub-nm SWNTs) were synthesized at different temperatures (600, 700, and 800 C) using CoMn bimetallic catalysts supported on MCM-41 silica templates. The state of the catalyst was investigated using X-ray absorption, and the (n,m) indices of the sub-nm SWNTs were determined from Raman spectroscopy and photoluminescence measurements. We find that the size of the metallic particles that seed the growth of sub-nm SWNTs (diameter {approx}0.5-1.0 nm) is highly sensitive to the reaction temperature. Low reaction temperature (600 C) favors the growth of semiconducting tubes whose diameters range from 0.5 to 0.7 nm. These results were alsomore »« less
DOI: 10.1021/ja102011h
CoSO[subscript 4]/SiO[subscript 2] catalyst for selective synthesis of (9, 8) single-walled carbon nanotubes: Effect of catalyst calcination

Wang, Hong ; Ren, Fang ; Liu, Changchang ; ... November 2013 - J. Catal.
DOI: 10.1016/j.jcat.2012.12.032
CoSO4/SiO2 Catalyst for Selective Synthesis of (9, 8) Single-Walled Carbon Nanotubes: Effect of Catalyst Calcination

H Wang ; F Ren ; C Liu ; ... April 2013 - Journal of Catalysis
DOI: 10.1016/j.jcat.2013.03.009
Increase in the Yield of (and Selective Synthesis of Large-Diameter) Single-Walled Carbon Nanotubes Through Water-Assisted Ethanol Pyrolysis

Ren, F. ; Kanaan, S. ; Majewska, M. ; ... January 2014 - Journal of Catalysis
DOI: 10.1016/j.jcat.2013.10.007

Title: Selective Aggrevation of Single-Walled Carbon Nanotubes via Salt Addition

Abstract

Citation Formats

Self-formation of highly aligned metallic, semiconducting and single chiral single-walled carbon nanotubes assemblies via a crystal template method

Selective Synthesis of Subnanometer Diameter Semiconducting Single-Walled Carbon Nanotubes

CoSO[subscript 4]/SiO[subscript 2] catalyst for selective synthesis of (9, 8) single-walled carbon nanotubes: Effect of catalyst calcination

CoSO4/SiO2 Catalyst for Selective Synthesis of (9, 8) Single-Walled Carbon Nanotubes: Effect of Catalyst Calcination

Increase in the Yield of (and Selective Synthesis of Large-Diameter) Single-Walled Carbon Nanotubes Through Water-Assisted Ethanol Pyrolysis