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Chemically Active Reduced Graphene Oxide with Tunable C/O Ratios

Compton, Owen C., Jain, Bonny, Dikin, Dmitriy A., Abouimrane, Ali, Amine, Khalil, Nguyen, SonBinh T.·2011·ACS Nano

Abstract

Organic dispersions of graphene oxide can be thermally reduced in polar organic solvents under reflux conditions to afford electrically conductive, chemically active reduced graphene oxide (CARGO) with tunable C/O ratios, dependent on the boiling point of the solvent. The reductions are achieved after only 1 h of reflux, and the corresponding C/O ratios do not change upon further thermal treatment. Hydroxyl and carboxyl groups can be removed when the reflux is carried out above 155 °C, while epoxides are removable only when the temperature is higher than 200 °C. The increasing hydrophobic nature of CARGO, as its C/O ratio increases, improves the dispersibility of the nanosheets in a polystyrene matrix, in contrast to the aggregates formed with CARGO having lower C/O ratios. The excellent processability of the obtained CARGO dispersions is demonstrated via free-standing CARGO papers that exhibit tunable electrical conductivity/chemical activity and can be used as lithium-ion battery anodes with enhanced Coulombic efficiency.

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Metadata

Authors
Compton, O. C., Jain, B., Dikin, D. A., Abouimrane, A., Amine, K., & Nguyen, S. T.
Venue
ACS Nano
Published
2011-06-03
Volume
5
Issue
6
Pages
4380-4391
ISSN
  • 1936-0851 (ISSN-L)
  • 1936-086X
OpenAlex
W2313132466
Cited by
384
References
2
FWCI
17.04
Type
journal article
Language
en
Open access
closed

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CoChat. (2026). Citation check: Chemically Active Reduced Graphene Oxide with Tunable C/O Ratios. https://app.cochat.ai/papers/10.1021/nn1030725
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Compton, O. C., Jain, B., Dikin, D. A., Abouimrane, A., Amine, K., & Nguyen, S. T. (2011). Chemically Active Reduced Graphene Oxide with Tunable C/O Ratios. ACS Nano. https://doi.org/10.1021/nn1030725

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