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Stacking-Specific Reversible Oxidation of Bilayer Graphene

Cited 1 time in Web of Science Cited 1 time in Scopus
Issue Date
2021-02
Citation
Chemistry of Materials, Vol.33 No.4, pp.1249-1256
Abstract
We report, for the first time, that the oxidation of bilayer graphene (BLG) can be reversibly and stacking-specifically controlled. The infrared (IR) absorption, IR nanoscopy, and Raman spectroscopy measurements on BLG consistently show reversible changes in the spectra and images upon exposure to O-2 and H-2 at elevated temperatures. We also obtain spectroscopic and theoretical evidence that stacking orders of graphene layers have a profound influence on the oxide structures: AB-BLG reacting with singlet and triplet oxygen results in endoperoxides (-C-O-O-C-), whereas AA'-BLG reacting with oxygen generates both the epoxides (singlet, -C-O-C-) and endoperoxides (triplet). We believe that our result provides deeper understanding on the layer-dependent catalytic activities of graphene, which is crucial for the design of high-performance graphene-based catalysts needed for various electrochemical, biological, and environmental applications.
ISSN
0897-4756
URI
https://hdl.handle.net/10371/178076
DOI
https://doi.org/10.1021/acs.chemmater.0c04026
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