Title
The role of steam treatment on the structure, purity and length distribution of multi-walled carbon nanotubesThe role of steam treatment on the structure, purity and length distribution of multi-walled carbon nanotubes
Author
Faculty/Department
Faculty of Sciences. Physics
Research group
Electron microscopy for materials research (EMAT)
Publication type
article
Publication
Oxford,
Subject
Physics
Chemistry
Source (journal)
Carbon. - Oxford
Volume/pages
93(2015), p. 1059-1067
ISSN
0008-6223
ISI
000360292100108
Carrier
E
Target language
English (eng)
Full text (Publishers DOI)
Affiliation
University of Antwerp
Abstract
Purification and shortening of carbon nanotubes have attracted a great deal of attention to increase the biocompatibility and performance of the material in several applications. Steam treatment has been employed to afford both purification and shortening of multi-walled carbon nanotubes (MWCNTs). Steam removes the amorphous carbon and the graphitic particles that sheath catalytic nanoparticles, facilitating their removal by a subsequent acidic wash. The amount of metal impurities can be reduced in this manner below 0.01 wt.%. The length distribution of MWCNTs after different steam treatment times (from 1 h to 15 h) was assessed by box plot analysis of the electron microscopy data. Samples with a median length of 0.57 μm have been prepared with the reported methodology while preserving the integrity of the tubular wall structure.
E-info
https://repository.uantwerpen.be/docman/iruaauth/28b5ef/f65fd63bb29.pdf
Full text (open access)
https://repository.uantwerpen.be/docman/irua/1e99d3/10814.pdf
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