<abstract xmlns="http://www.w3.org/1999/xhtml"><p>The electro-synthesis of poly(aniline-<italic>co-para</italic>–aminophenol) on graphite electrode was examined using cyclic voltammetry (CV) over the potential window of −0.2 V to 1 V in phosphoric acid medium, which was comprised of potassium chloride and <italic>para</italic>–Toluene sulfonic acid (<italic>p</italic>TSA) as electrolyte support. Fourier transform infrared (FTIR) spectroscopy was employed to identify the electro-synthesized copolymer while impedance techniques were used to determine charge transfer resistance (Rct) in modified and unmodified electrodes. After this, the electro-catalytic effect of the modified electrode on ascorbic acid was examined using differential pulse voltammetry (DPV) and a very strong response was observed. A negative shift of about 0.33 V was found in the peak anodic potentials for ascorbic acid. Measurement using DPV indicated a proper response by the electrode to a wide range of ascorbic acid concentrations, from 0.0001 to 0.0004 M. The peak anodic currents for increased concentrations showed a proper linear range.</p></abstract>

The electro-synthesis of poly(aniline-co-para–aminophenol) on graphite electrode was examined using cyclic voltammetry (CV) over the potential window of −0.2 V to 1 V in phosphoric acid medium, which was comprised of potassium chloride and para–Toluene sulfonic acid (pTSA) as electrolyte support. Fourier transform infrared (FTIR) spectroscopy was employed to identify the electro-synthesized copolymer while impedance techniques were used to determine charge transfer resistance (Rct) in modified and unmodified electrodes. After this, the electro-catalytic effect of the modified electrode on ascorbic acid was examined using differential pulse voltammetry (DPV) and a very strong response was observed. A negative shift of about 0.33 V was found in the peak anodic potentials for ascorbic acid. Measurement using DPV indicated a proper response by the electrode to a wide range of ascorbic acid concentrations, from 0.0001 to 0.0004 M. The peak anodic currents for increased concentrations showed a proper linear range.

Determination of ascorbic acid using differential pulse voltammetry method on aniline-<italic>co-para</italic>–aminophenol modified electrode

Department of Chemistry, College of Science, Yadegar-e-Imam Khomeini (RAH) Shahre Rey Branch

Polish Journal of Chemical Technology

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Determination of ascorbic acid using differential pulse voltammetry method on aniline-–aminophenol modified electrode

The electro-synthesis of poly(aniline-co-para–aminophenol) on graphite electrode was examined using cyclic voltammetry (CV) over the potential window of −0.2 V...

Determination of ascorbic acid using differential pulse voltammetry method on aniline-co-para–aminophenol modified electrode

Published Online: Jul 08, 2017

Page range: 125 - 129

DOI: https://doi.org/10.1515/pjct-2017-0038

Keywords
polyaniline, –aminophenol, ascorbic acid, differential pulse voltammetry

© 2017 Ali Parsa et al., published by De Gruyter Open

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Determination of ascorbic acid using differential pulse voltammetry method on aniline-co-para–aminophenol modified electrode

Published Online: Jul 08, 2017

Page range: 125 - 129

DOI: https://doi.org/10.1515/pjct-2017-0038

Keywordspolyaniline, –aminophenol, ascorbic acid, differential pulse voltammetry

© 2017 Ali Parsa et al., published by De Gruyter Open

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Keywords
polyaniline, –aminophenol, ascorbic acid, differential pulse voltammetry