Electroactive polyamide modified carbon paste electrode for the determination of ascorbic acid

Construction electroactive polyamide (EPA) with aniline-pentamer-based in the main chain has been modified on the surface of carbon paste electrode (CPE) for detecting ascorbic acid (AA). Fourier transform infrared spectroscopy and nuclear magnetic resonance spectroscopy studies confirm the well-def...

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Bibliographic Details
Published in:International journal of green energy 2016-10, Vol.13 (13), p.1334-1341
Main Authors: Yeh, Lu-Chen, Huang, Tsao-Cheng, Lin, Yen-Jen, Lai, Guan-Hui, Yang, Ta-I, Lo, An-Ya, Yeh, Jui-Ming
Format: Article
Language:English
Subjects:
Ascorbic acid
Carbon
carbon paste electrode
electroactive polyamide
Electroactivity
electrochemical sensor
Electrodes
Molecular structure
oligoaniline
Pastes
Polyamide resins
Standard deviation
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Summary:Construction electroactive polyamide (EPA) with aniline-pentamer-based in the main chain has been modified on the surface of carbon paste electrode (CPE) for detecting ascorbic acid (AA). Fourier transform infrared spectroscopy and nuclear magnetic resonance spectroscopy studies confirm the well-defined molecular structure of the oligoaniline and EPA. Further, the in situ chemical oxidation of EPA was monitored by UV-Visible absorption spectrum. The electroactivity of the EPA was evaluated by performing electrochemical cyclic voltammetry study. The sensing response studies have revealed that this EPA-modified CPE electrode can detect AA in the range of 0.05-0.7 mM with detection limit of 0.005 mM and sensitivity of 1.5 × 10 -5 AmM -1 . Besides, this EPA-modified CPE electrode shows a minimal relative standard deviation of 1.73%.
ISSN:1543-5075
1543-5083
DOI:10.1080/15435075.2016.1206005