Electrooxidation of Se on nanodispersed films of titanium dioxide modified with ZnO and Au

Myroslava Plakhotna, Vera Vorobets, Gennadii Kolbasov, Natalia Smirnova, Oksana Linnik, Anna Eremenko

Abstract


Selenium electrooxidation process on TiO2 and TiO2/ZnO electrodes, modified by gold nanoparticles, was investigated in solutions of sulfuric, chloric and citric acids. It is shown that TiO2/ZnO/Au electrodes can be used as indicator electrodes at the determination of selenium by anodic stripping voltammetry method. Optimum conditions of selenium (IV) determination are: supporting solution 0,001М H2SO4, electroconcentrating potential -(1,3¸1,5) V; time of electrolysis 120 s, scanning speed of potential 20 mV/s.


Keywords


selenium; electrooxidation; TiO2; gold nanoparticles

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References


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DOI: https://doi.org/10.17721/fujcV5I2P56-61

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