期刊
ELECTROCHEMISTRY COMMUNICATIONS
卷 48, 期 -, 页码 103-106出版社
ELSEVIER SCIENCE INC
DOI: 10.1016/j.elecom.2014.08.024
关键词
Hybrid graphene-carbon nanotubes film; Kinetics; Electron-transfer; Edge planes; Raman spectra
资金
- National Science Foundation [DMR-1106173, ECCS-1344745, IIP-1414338]
- National Institutes of Health [1R21NS070033-01A1]
- Direct For Mathematical & Physical Scien
- Division Of Materials Research [1106173] Funding Source: National Science Foundation
- Directorate For Engineering
- Div Of Electrical, Commun & Cyber Sys [1344745] Funding Source: National Science Foundation
We report the first study of the electrochemical reactivity of a graphenated carbon nanotube (g-CNT) film. The electron transfer kinetics of the ferri-ferrocyanide couple were examined for a g-CNT film and compared to the kinetics to standard carbon nanotubes (CNTs). The g-CNT film exhibited much higher catalytic activity, with a heterogeneous electron-transfer rate constant, k(0), approximately two orders of magnitude higher than for standard CNTs. Scanning electron microscopy and Raman spectroscopy were used to correlate the higher electron transfer kinetics with the higher edge-density of the g-CNT film. (C) 2014 Elsevier B.V. All rights reserved.
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