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Individual Single-Walled Nanotubes and Hydrogels Made by Oxidative Exfoliation of Carbon Nanotube Ropes
Abstract
Single-walled carbon nanotubes were oxidized by a technique previously developed for the oxidation of graphite to graphite oxide (GO). This process involves treatment with concentrated H(2)SO(4) containing (NH(4))(2)S(2)O(8) and P(2)O(5), followed by H(2)SO(4) and KMnO(4). Oxidation results in complete exfoliation of nanotube ropes to yield individual oxidized tubes that are 40-500 nm long. The C:O:H atomic ratio of vacuum-dried oxidized nanotubes is approximately 2.7:1.0:1.2. XPS and IR spectra show evidence for surface O-H, C=O, and COOH groups. The oxidized nanotubes slowly form viscous hydrogels at unusually low concentration (>or=0.3 wt %), and this behavior is attributed to the formation of a hydrogen-bonded nanotube network. The oxidized tubes bind readily to amine-coated surfaces, on which they adsorb as smooth and dense monolayer films. Thin films of the oxidized nanotubes show ohmic current-voltage behavior, with resistivities in the range of 0.2-0.5 Omega-cm.
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Citations
Cited by
Chemical oxidation of multiwalled carbon nanotubes
Datsyuk, V., Kalyva, M., Papagelis, K., Parthenios, J., Tasis, D., Siokou, A., Kallitsis, I., & Galiotis, C. (2008) · Carbon · doi:10.1016/j.carbon.2008.02.012 · Cited by 2,747
Ultralight Multiwalled Carbon Nanotube Aerogel
Zou, J., Liu, J., Karakoti, A. S., Kumar, A., Joung, D., Li, Q., Khondaker, S. I., Seal, S., & Zhai, L. (2010) · ACS Nano · doi:10.1021/nn102246a · Cited by 509
Graphene Oxide-Assisted Dispersion of Pristine Multiwalled Carbon Nanotubes in Aqueous Media
Zhang, C., Ren, L., Wang, X., & Liu, T. (2010) · The Journal of Physical Chemistry C · doi:10.1021/jp103745g · Cited by 348
Nitrogen‐Doped Carbon Nanotube Aerogels for High‐Performance ORR Catalysts
Du, R., Zhang, N., Zhu, J., Wang, Y., Xu, C., Hu, Y., Mao, N., Xu, H., Duan, W., Zhuang, L., et al. (2015) · Small · doi:10.1002/smll.201500587 · Cited by 121
Metadata
- Authors
- Kovtyukhova, N. I., Mallouk, T. E., Pan, L., & Dickey, E. C.
- Venue
- Journal of the American Chemical Society
- Publisher
- American Chemical Society (ACS)
- Published
- 2003-07-17
- Volume
- 125
- Issue
- 32
- Pages
- 9761-9769
- ISSN
- 0002-7863 (ISSN-L)
- 1520-5126
- OpenAlex
- W2035358231
- Cited by
- 352
- References
- 0
- FWCI
- 11.87
- Type
- journal article
- Language
- en
- Open access
- closed
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- Kovtyukhova, N. I., Mallouk, T. E., Pan, L., & Dickey, E. C. (2003). Individual Single-Walled Nanotubes and Hydrogels Made by Oxidative Exfoliation of Carbon Nanotube Ropes. Journal of the American Chemical Society. https://doi.org/10.1021/ja0344516
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