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Promising electrochemical performance of high-surface-area boron-doped diamond/carbon nanotube electroanalytical sensors.
- Source :
-
Journal of Solid State Electrochemistry . Sep2016, Vol. 20 Issue 9, p2403-2409. 7p. - Publication Year :
- 2016
-
Abstract
- Porous boron-doped diamond (p-BDD) electrodes of high-surface-area have been prepared on vertically aligned carbon nanotube substrates, and their electrochemical performance has demonstrated promising results for application in electroanalysis. The electrochemical features of the p-BDD electrodes were investigated and compared with those of a conventional flat BDD electrode (f-BDD). From cyclic voltammetry studies performed for the electrochemical probes [Fe(CN)] and N, N, N′, N′-tetramethyl- para-phenylenediamine (TMPD), a fast charge transfer was observed at the p-BDD/electrolyte interface. For the [Fe(CN)] redox probe, the heterogeneous electron-transfer rate constant ( k ) value obtained for p-BDD was 10.9 times higher than that obtained using a f-BDD electrode. Moreover, the p-BDD electrodes also gave a smaller peak potential separation, Δ E , and larger analytical signal magnitude for different biomolecules, such as dopamine (DA), acetaminophen (AC), and epinephrine (EP). These set of results demonstrated that the p-BDD electrode is a suitable candidate for applications in electroanalytical chemistry. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 14328488
- Volume :
- 20
- Issue :
- 9
- Database :
- Academic Search Index
- Journal :
- Journal of Solid State Electrochemistry
- Publication Type :
- Academic Journal
- Accession number :
- 117605261
- Full Text :
- https://doi.org/10.1007/s10008-016-3128-4