Stacking-Specific Reversible Oxidation of Bilayer Graphene
SCIE
SCOPUS
- Title
- Stacking-Specific Reversible Oxidation of Bilayer Graphene
- Authors
- Park, Baekwon; Jeong, Gyouil; Lim, Eunhak; Suh, Yeonjoon; Choi, Boogeon; Jeong, Hyeon-Woo; Watanabe, Kenji; Taniguchi, Takashi; Lee, Gil-Ho; Heo, Jiyoung; Hong, Byung Hee; Kim, Zee Hwan
- Date Issued
- 2021-02-23
- Publisher
- AMER CHEMICAL SOC
- 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.
- Keywords
- Catalyst activity; Peroxides; Bilayer Graphene; Elevated temperature; Environmental applications; Graphene layers; Oxide structures; Raman spectroscopy measurements; Reversible change; Reversible oxidation; Graphene
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/105161
- DOI
- 10.1021/acs.chemmater.0c04026
- ISSN
- 0897-4756
- Article Type
- Article
- Citation
- CHEMISTRY OF MATERIALS, vol. 33, no. 4, page. 1249 - 1256, 2021-02-23
- Files in This Item:
- There are no files associated with this item.
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.