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Graphene Oxide Nanocolloids
Abstract
Graphene oxide (GO) nanocolloids-sheets with lateral dimension smaller than 100 nm-were synthesized by chemical exfoliation of graphite nanofibers, in which the graphene planes are coin-stacked along the length of the nanofibers. Since the upper size limit is predetermined by the diameter of the nanofiber precursor, the size distribution of the GO nanosheets is much more uniform than that of common GO synthesized from graphite powders. The size can be further tuned by the oxidation time. Compared to the micrometer-sized, regular GO sheets, nano GO has very similar spectroscopic characteristics and chemical properties but very different solution properties, such as surface activity and colloidal stability. Due to higher charge density originating from their higher edge-to-area ratios, aqueous GO nanocolloids are significantly more stable. Dispersions of GO nanocolloids can sustain high-speed centrifugation and remain stable even after chemical reduction, which would result in aggregates for regular GO. Therefore, nano GO can act as a better dispersing agent for insoluble materials (e.g., carbon nanotubes) in water, creating a more stable colloidal dispersion.
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NGOs are likely to be more reactive than large GOs because they easily penetrate into ECM fibrils and have more functional groups at edges due to high edge-to-area ratio.
“NGOs are likely to be more reactive than large GOs because they easily penetrate into ECM fibrils and have more functional groups at the edges due to their high edge-to-area ratio48.”
From Bioengineered liver crosslinked with nano-graphene oxide enables efficient liver regeneration via MMP suppression and immunomodulation (2023) · cites this paper as [48]
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Narrow graphene nanoribbons from carbon nanotubes
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Kim, D.-H., Kim, M.-J., Kwak, S.-Y., Jeong, J., Choi, D., Choi, S. W., Ryu, J., & Kang, K.-S. (2023) · Nature Communications · doi:10.1038/s41467-023-35941-2 · Cited by 53
Metadata
- Authors
- Luo, J., Cote, L. J., Tung, V. C., Tan, A. T. L., Goins, P. E., Wu, J., & Huang, J.
- Affiliations
- Northwestern University (US)
- Corresponding author
- Huang, Jiaxing
- Venue
- Journal of the American Chemical Society
- Publisher
- American Chemical Society (ACS)
- Published
- 2010-11-24
- Volume
- 132
- Issue
- 50
- Pages
- 17667-17669
- ISSN
- 0002-7863 (ISSN-L)
- 1520-5126
- OpenAlex
- W2022916713
- Cited by
- 389
- References
- 1
- Citations by year
- 2026: 9 · 2025: 14 · 2024: 6 · 2023: 7 · 2022: 22 · 2021: 28 · 2020: 25 · 2019: 31 · 2018: 28 · 2017: 30 · 2016: 41 · 2015: 40 · 2014: 30 · 2013: 37 · 2012: 27
- FWCI
- 12.26
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Journal of the American Chemical Society (publishedVersion)
- PubMed (publishedVersion)
- Topics
- Physical Sciences › Materials Science › Materials Chemistry › Graphene research and applications
- Physical Sciences › Engineering › Biomedical Engineering › Graphene and Nanomaterials Applications
- Physical Sciences › Materials Science › Materials Chemistry › Carbon Nanotubes in Composites
- Keywords
- graphene oxide, nanocolloids, chemical exfoliation, graphite nanofibers, oxidation time, colloidal stability, surface activity, charge density, CNT dispersion, aqueous dispersions
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