Enhancement of Catalytic Activity of Reduced Graphene Oxide Via Transition Metal Doping Strategyopen access
- Authors
- Lee, Hangil; Hong, Jung A.
- Issue Date
- Jun-2017
- Publisher
- SPRINGER
- Keywords
- Catalytic oxidation; Transition metal-doped rGO; HRPES; SEM; Electrochemical measurement
- Citation
- NANOSCALE RESEARCH LETTERS, v.12
- Journal Title
- NANOSCALE RESEARCH LETTERS
- Volume
- 12
- URI
- https://scholarworks.sookmyung.ac.kr/handle/2020.sw.sookmyung/8298
- DOI
- 10.1186/s11671-017-2196-4
- ISSN
- 1931-7573
1556-276X
- Abstract
- To compare the catalytic oxidation activities of reduced graphene oxide (rGO) and rGO samples doped with five different transition metals (TM-rGO), we determine their effects on the oxidation of L-cysteine (Cys) in aqueous solution by performing electrochemistry (EC) measurements and on the photocatalytic oxidation of Cys by using high-resolution photoemission spectroscopy (HRPES) under UV illumination. Our results show that Cr-, Fe-, and Co-doped rGO with 3+ charge states (stable oxide forms: Cr3+, Fe3+, and Co3+) exhibit enhanced catalytic activities that are due to the charge states of the doped metal ions as we compare them with Cr-, Fe-, and Co-doped rGO with 2+ charge states.
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