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The Influence of Solution pH on the Kinetics of Resorcinol Electrooxidation (Degradation) on Polycrystalline Platinum

1
Department of Chemistry, Faculty of Environmental Management and Agriculture, University of Warmia and Mazury in Olsztyn, Plac Lodzki 4, 10-727 Olsztyn, Poland
2
Department of Rehabilitation, Faculty of Medical Sciences, University of Warmia and Mazury in Olsztyn, Zolnierska 14C Street, 10-561 Olsztyn, Poland
3
Institute of Animal Reproduction and Food Research, Polish Academy of Sciences in Olsztyn, Tuwima 10 Street, 10-748 Olsztyn, Poland
*
Authors to whom correspondence should be addressed.
Molecules 2019, 24(12), 2309; https://doi.org/10.3390/molecules24122309
Received: 31 May 2019 / Revised: 17 June 2019 / Accepted: 21 June 2019 / Published: 21 June 2019
(This article belongs to the Section Electrochemistry)
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Abstract

Electrochemical oxidation of resorcinol on a polycrystalline platinum electrode was investigated in five different solutions, namely 0.5 and 0.1 M H2SO4, 0.5 M Na2SO4, 0.5 and 0.1 M NaOH. The rates of electrochemical degradation of resorcinol were determined based on the obtained reaction parameters, such as resistance, capacitance and current-density. The electrochemical analyses (cyclic voltammetry and a.c. impedance spectroscopy) were carried-out by means of a three-compartment, Pyrex glass cell. These results showed that the electrochemical oxidation of resorcinol is strongly pH-dependent. In addition, the energy dispersive X-ray (EDX) spectroscopy technique was employed for Pt electrode surface characterization. Additionally, the quantitative determination of resorcinol removal was performed by means of instrumental high-performance liquid chromatography/mass spectrometry (HPLC/MS) methodology. View Full-Text
Keywords: oxidation of resorcinol; a.c. impedance spectroscopy; energy dispersive X-ray spectroscopy; 0.5 M H2SO4; 0.5 M Na2SO4; 0.1 M NaOH; 0.1 M H2SO4; 0.5 M NaOH oxidation of resorcinol; a.c. impedance spectroscopy; energy dispersive X-ray spectroscopy; 0.5 M H2SO4; 0.5 M Na2SO4; 0.1 M NaOH; 0.1 M H2SO4; 0.5 M NaOH
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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Mikolajczyk, T.; Luba, M.; Pierozynski, B.; Kowalski, I.M.; Wiczkowski, W. The Influence of Solution pH on the Kinetics of Resorcinol Electrooxidation (Degradation) on Polycrystalline Platinum. Molecules 2019, 24, 2309.

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