Gas-phase purification of single-wall carbon nanotubes
Abstract
A gas-phase purification method for raw nanotube material has been developed which incorporates a chlorine, water, and hydrogen chloride gas mixture to remove unwanted carbon. The evolved gases can be easily monitored by infrared spectroscopy to follow the cleaning process. The quality of the final material was verified by SEM (scanning electron microscopy), TGA (thermogravimetric analysis), and UV-vis (ultraviolet and visible absorption spectroscopy). The yield of {approximately}15 wt % indicates a uniquely selective carbon surface chemistry that prevents etching of the nanotubes, which are generally more reactive due to their larger curvature. Although the technique's usefulness for large-scale purification was not determined, the ability to purify single-wall nanotubes by a gas-phase method has been demonstrated, and a mechanism proposed.
- Authors:
- Publication Date:
- Research Org.:
- Rice Univ., Houston, TX (US)
- OSTI Identifier:
- 20080265
- Resource Type:
- Journal Article
- Journal Name:
- Chemistry of Materials
- Additional Journal Information:
- Journal Volume: 12; Journal Issue: 5; Other Information: PBD: May 2000; Journal ID: ISSN 0897-4756
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE; CARBON; TUBES; PURIFICATION; GASES; CHLORINE; WATER; HYDROCHLORIC ACID
Citation Formats
Zimmerman, J L, Bradley, R K, Huffman, C B, Hauge, R H, and Margrave, J L. Gas-phase purification of single-wall carbon nanotubes. United States: N. p., 2000.
Web. doi:10.1021/cm990693m.
Zimmerman, J L, Bradley, R K, Huffman, C B, Hauge, R H, & Margrave, J L. Gas-phase purification of single-wall carbon nanotubes. United States. https://doi.org/10.1021/cm990693m
Zimmerman, J L, Bradley, R K, Huffman, C B, Hauge, R H, and Margrave, J L. 2000.
"Gas-phase purification of single-wall carbon nanotubes". United States. https://doi.org/10.1021/cm990693m.
@article{osti_20080265,
title = {Gas-phase purification of single-wall carbon nanotubes},
author = {Zimmerman, J L and Bradley, R K and Huffman, C B and Hauge, R H and Margrave, J L},
abstractNote = {A gas-phase purification method for raw nanotube material has been developed which incorporates a chlorine, water, and hydrogen chloride gas mixture to remove unwanted carbon. The evolved gases can be easily monitored by infrared spectroscopy to follow the cleaning process. The quality of the final material was verified by SEM (scanning electron microscopy), TGA (thermogravimetric analysis), and UV-vis (ultraviolet and visible absorption spectroscopy). The yield of {approximately}15 wt % indicates a uniquely selective carbon surface chemistry that prevents etching of the nanotubes, which are generally more reactive due to their larger curvature. Although the technique's usefulness for large-scale purification was not determined, the ability to purify single-wall nanotubes by a gas-phase method has been demonstrated, and a mechanism proposed.},
doi = {10.1021/cm990693m},
url = {https://www.osti.gov/biblio/20080265},
journal = {Chemistry of Materials},
issn = {0897-4756},
number = 5,
volume = 12,
place = {United States},
year = {Mon May 01 00:00:00 EDT 2000},
month = {Mon May 01 00:00:00 EDT 2000}
}