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Mechanism of Graphene Oxide Formation
Open accessAbstract
Despite intensive research, the mechanism of graphene oxide (GO) formation remains unclear. The role of interfacial interactions between solid graphite and the liquid reaction medium, and transport of the oxidizing agent into the graphite, has not been well-addressed. In this work, we show that formation of GO from graphite constitutes three distinct independent steps. The reaction can be stopped at each step, and the corresponding intermediate products can be isolated, characterized, and stored under appropriate conditions. The first step is conversion of graphite into a stage-1 graphite intercalation compound (GIC). The second step is conversion of the stage-1 GIC into oxidized graphite, which we define as pristine graphite oxide (PGO). This step involves diffusion of the oxidizing agent into the preoccupied graphite galleries. This rate-determining step makes the entire process diffusive-controlled. The third step is conversion of PGO into conventional GO after exposure to water, which involves hydrolysis of covalent sulfates and loss of all interlayer registry.
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Cites
The chemistry of graphene oxide
Dreyer, D. R., Park, S., Bielawski, C. W., & Ruoff, R. S. (2010) · Chem. Soc. Rev. · doi:10.1039/b917103g · Cited by 11,653
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Brisebois, P. P., & Siaj, M. (2020) · Journal of Materials Chemistry C · doi:10.1039/c9tc03251g · Cited by 445
Water-enhanced oxidation of graphite to graphene oxide with controlled species of oxygenated groups
Chen, J., Zhang, Y., Zhang, M., Yao, B., Li, Y., Huang, L., Li, C., & Shi, G. (2016) · Chemical Science · doi:10.1039/c5sc03828f · Cited by 339
Top-down synthesis of graphene: A comprehensive review
Kumar, N., Salehiyan, R., Chauke, V., Joseph Botlhoko, O., Setshedi, K., Scriba, M., Masukume, M., & Sinha Ray, S. (2021) · FlatChem · doi:10.1016/j.flatc.2021.100224 · Cited by 336
Hidden Second Oxidation Step of Hummers Method
Kang, J. H., Kim, T., Choi, J., Park, J., Kim, Y. S., Chang, M. S., Jung, H., Park, K. T., Yang, S. J., & Park, C. R. (2016) · Chemistry of Materials · doi:10.1021/acs.chemmater.5b03700 · Cited by 257
Metadata
- Authors
- Dimiev, A. M., & Tour, J. M.
- Venue
- ACS Nano
- Publisher
- American Chemical Society (ACS)
- Published
- 2014-03-06
- Volume
- 8
- Issue
- 3
- Pages
- 3060-3068
- ISSN
- 1936-0851 (ISSN-L)
- 1936-086X
- OpenAlex
- W2318790962
- Cited by
- 945
- References
- 1
- FWCI
- 28.59
- Type
- journal article
- Language
- en
- Open access
- hybrid
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Bibliographic data: Semantic Scholar, OpenAlex, Crossref.
Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.
