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Monitoring oxidation of multiwalled carbon nanotubes by Raman spectroscopy
Abstract
Multiwalled carbon nanotubes (MWCNTs) were oxidized in air and acids while varying the treatment time and/or temperature. The goal of this approach was to create the highest density of carboxyl groups with moderate sample loss, which is necessary for nanocomposite applications. In situ Raman experiments allowed real‐time observation of the structural changes in MWCNTs upon oxidation. The ratio of the Raman intensities of the D and G bands was used to estimate the concentration of defects. It was found that while an oxidation for 6 h in H 2 SO 4/HNO 3 provided the strongest effect, a ‘flash oxidation’ in air (15 min at 550 °C) also leads to an efficient functionalization in a cost‐effective and environmentally friendly way. Transmission electron microscopy, Fourier‐transform infrared (FTIR) spectroscopy, thermogravimetric analysis and electrophoretic mobility analysis were used to study the oxidized nanotubes. Copyright © 2007 John Wiley & Sons, Ltd.
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Cited by
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Chemical and structural characterization of carbon nanotube surfaces
Wepasnick, K. A., Smith, B. A., Bitter, J. L., & Howard Fairbrother, D. (2010) · Analytical and Bioanalytical Chemistry · doi:10.1007/s00216-009-3332-5 · Cited by 600
Influence of carbon nanotubes structure on the mechanical behavior of cement composites
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Mochalin, V., Osswald, S., & Gogotsi, Y. (2009) · Chemistry of Materials · doi:10.1021/cm802057q · Cited by 279
Self-citationMultifunctional carbon nanotubes in water treatment: The present, past and future
Das, R., Abd Hamid, S. B., Ali, M. E., Ismail, A. F., Annuar, M. S. M., & Ramakrishna, S. (2014) · Desalination · doi:10.1016/j.desal.2014.09.032 · Cited by 270
Metadata
- Authors
- Osswald, S., Havel, M., & Gogotsi, Y.
- Venue
- Journal of Raman Spectroscopy
- Publisher
- Wiley
- Published
- 2007-04-11
- Volume
- 38
- Issue
- 6
- Pages
- 728-736
- ISSN
- 0377-0486 (ISSN-L)
- 1097-4555
- OpenAlex
- W1984009520
- Cited by
- 627
- References
- 0
- FWCI
- 11.70
- Type
- journal article
- Language
- en
- Open access
- closed
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- Osswald, S., Havel, M., & Gogotsi, Y. (2007). Monitoring oxidation of multiwalled carbon nanotubes by Raman spectroscopy. Journal of Raman Spectroscopy. https://doi.org/10.1002/jrs.1686
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