1. The Influence of Solution pH on the Kinetics of Resorcinol Electrooxidation (Degradation) on Polycrystalline Platinum.
- Author
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Mikolajczyk, Tomasz, Luba, Mateusz, Pierozynski, Boguslaw, Kowalski, Ireneusz M., and Wiczkowski, Wieslaw
- Subjects
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RESORCINOL , *PLATINUM electrodes , *SURFACE analysis , *ELECTROCHEMICAL analysis , *IMPEDANCE spectroscopy - 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. [ABSTRACT FROM AUTHOR]
- Published
- 2019
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