Electrochemical Pretreatment of Carbon Fiber Microelectrodes Based on Sinusoidal-wave Potential Cycling and its Application to Amperometric Sensing of Bioactive Compounds

Author(s): Vladimir Halouzka, Jan Hrbac, David Jirovsky, Daniel Riman, Petr Jakubec, Zdenka Bartosova, Vlastimil Masek, Peter Mojzes, Jan Vacek

Journal Name: Current Analytical Chemistry

Volume 9 , Issue 2 , 2013


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Abstract:

We demonstrate the electrochemical pretreatment of carbon fiber microelectrodes (CFEs) based on the sinusoidal- wave potential cycling (50 Hz) of CFEs prior to amperometric analysis. The surface modification and morphology of CFEs after pretreatment was studied using Raman spectroscopy and scanning electron microscopy. The pretreated CFEs were extensively tested for sensing of bioactive compounds (dopamine, nitric oxide, ascorbate and nitrite) by constant current amperometry at 830 mV vs. Ag/AgCl.

Keywords: Carbon fiber, dopamine, microelectrode, nitric oxide, pretreatment, sensor

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Article Details

VOLUME: 9
ISSUE: 2
Year: 2013
Published on: 10 February, 2013
Page: [305 - 311]
Pages: 7
DOI: 10.2174/1573411011309020015
Price: $65

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