Diamond Compact Electrodes with Increased Electroactivity: Anodic Oxidation of Ethylenediaminetetraacetic Acid
Yu. V. Pleskova, *, M. D. Krotovaa, and E. A. Ekimovb
a Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences, Moscow, 119071 Russia
b Vereshchagin Institute for High Pressure Physics, Russian Academy of Sciences, Troitsk, Moscow, 142190 Russia
Correspondence to: *e-mail: pleskov33@mail.ru
1In memory of the brilliant electrochemist Lev Krishtalik (1927–2022).
Received 22 September, 2022
Abstract—The diamond electrodes-compacts with extreme high boron-doping level, and those added with platinum, were prepared at a pressure of 8–9 GPa and temperature ~2500 К from В–С, Pt–C, and Pt–C–B growth mixtures. They are highly electroactive in the reaction of ethylenediaminetetraacetic acid electrooxidation. The oxidation current is a linear function of the ethylenediaminetetraacetic acid concentration over the 0.001–0.05 g-eq/L range. This system can be basic to an electroanalytical method for the ethylenediaminetetraacetic acid determination.
Keywords: diamond electrode, compact, boron-doping, platinum additive, cyclic voltammetry, ethylenediaminetetraacetic acid, calibration curve
DOI: 10.1134/S1023193523090100