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Title: Purity Evaluation of Bulk Single Wall Carbon Nanotube Materials

Abstract

We report on our experience using a preliminary protocol for quality control of bulk single wall carbon nanotube (SWNT) materials produced by the electric arc-discharge and laser ablation method. The first step in the characterization of the bulk material is mechanical homogenization. Quantitative evaluation of purity has been performed using a previously reported procedure based on solution phase near-infrared spectroscopy. Our results confirm that this method is reliable in determining the nanotube content in the arc-discharge sample containing carbonaceous impurities (amorphous carbon and graphitic particles). However, the application of this method to laser ablation samples gives a relative purity value over 100 %. The possible reason for that might be different extinction coefficient meaning different oscillator strength of the laser ablation tubes. At the present time, a 100 % pure reference sample of laser ablation SWNT is not available, so we chose to adopt the sample showing the highest purity as a new reference sample for a quantitative purity evaluation of laser ablation materials. The graphitic part of the carbonaceous impurities has been estimated using X-ray diffraction of 1:1 mixture of nanotube material and C60 as an internal reference. To evaluate the metallic impurities in the as prepared and homogenizedmore » carbon nanotube soot inductive coupled plasma (ICP) has been used.« less

Authors:
; ; ;  [1]; ;  [1];  [2]
  1. Max Planck Institute for Solid State Research, 70569 Stuttgart (Germany)
  2. (China)
Publication Date:
OSTI Identifier:
20719407
Resource Type:
Journal Article
Journal Name:
AIP Conference Proceedings
Additional Journal Information:
Journal Volume: 786; Journal Issue: 1; Conference: 19. international winterschool/Euroconference on electronic properties of novel materials, Kirchberg, Tirol (Austria), 12-19 Mar 2005; Other Information: DOI: 10.1063/1.2103835; (c) 2005 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0094-243X
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; ABLATION; ABSORPTION SPECTROSCOPY; CARBON; ELECTRIC ARCS; EVALUATION; IMPURITIES; INFRARED SPECTRA; LASERS; NANOTUBES; OSCILLATOR STRENGTHS; PARTICLES; QUALITY CONTROL; X-RAY DIFFRACTION

Citation Formats

Dettlaff-Weglikowska, U., Hornbostel, B., Cech, J., Roth, S., Wang, J., Liang, J., and Yangtze Nanomaterials Co. Ltd, Shanghai. Purity Evaluation of Bulk Single Wall Carbon Nanotube Materials. United States: N. p., 2005. Web. doi:10.1063/1.2103835.
Dettlaff-Weglikowska, U., Hornbostel, B., Cech, J., Roth, S., Wang, J., Liang, J., & Yangtze Nanomaterials Co. Ltd, Shanghai. Purity Evaluation of Bulk Single Wall Carbon Nanotube Materials. United States. doi:10.1063/1.2103835.
Dettlaff-Weglikowska, U., Hornbostel, B., Cech, J., Roth, S., Wang, J., Liang, J., and Yangtze Nanomaterials Co. Ltd, Shanghai. Tue . "Purity Evaluation of Bulk Single Wall Carbon Nanotube Materials". United States. doi:10.1063/1.2103835.
@article{osti_20719407,
title = {Purity Evaluation of Bulk Single Wall Carbon Nanotube Materials},
author = {Dettlaff-Weglikowska, U. and Hornbostel, B. and Cech, J. and Roth, S. and Wang, J. and Liang, J. and Yangtze Nanomaterials Co. Ltd, Shanghai},
abstractNote = {We report on our experience using a preliminary protocol for quality control of bulk single wall carbon nanotube (SWNT) materials produced by the electric arc-discharge and laser ablation method. The first step in the characterization of the bulk material is mechanical homogenization. Quantitative evaluation of purity has been performed using a previously reported procedure based on solution phase near-infrared spectroscopy. Our results confirm that this method is reliable in determining the nanotube content in the arc-discharge sample containing carbonaceous impurities (amorphous carbon and graphitic particles). However, the application of this method to laser ablation samples gives a relative purity value over 100 %. The possible reason for that might be different extinction coefficient meaning different oscillator strength of the laser ablation tubes. At the present time, a 100 % pure reference sample of laser ablation SWNT is not available, so we chose to adopt the sample showing the highest purity as a new reference sample for a quantitative purity evaluation of laser ablation materials. The graphitic part of the carbonaceous impurities has been estimated using X-ray diffraction of 1:1 mixture of nanotube material and C60 as an internal reference. To evaluate the metallic impurities in the as prepared and homogenized carbon nanotube soot inductive coupled plasma (ICP) has been used.},
doi = {10.1063/1.2103835},
journal = {AIP Conference Proceedings},
issn = {0094-243X},
number = 1,
volume = 786,
place = {United States},
year = {2005},
month = {9}
}