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Electroreduction of Tellurium(IV) on Solid Electrodes in Neutral Solutions

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Abstract

Electroreduction of Te(IV) on glassy-carbon and nickel in neutral and weakly alkaline solutions is studied by cyclic voltammetry. A wave for the Te(IV) → Te(0) process is discovered. At a limiting current of Te(IV) reduction in a potentiodynamic mode in 0.5 M Na2SO4, a peak current is observed on Ni at –1.02 V (Ag/AgCl). The relationship between the peak and the tellurium electroreduction to the tellurium ion and the tellurohydrogen formation involving a proton is discussed. Dependence of the peak current on the concentration of Te(IV) ions is used for their analytical assay.

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Authors and Affiliations

  1. Institute of Organic Catalysis and Electrochemistry, National Academy of Sciences of Kazakhstan, Almaty, Kazakhstan

    M. B. Dergacheva, V. N. Statsyuk & L. A. Fogel'

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  1. M. B. Dergacheva
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  2. V. N. Statsyuk
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  3. L. A. Fogel'
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Dergacheva, M.B., Statsyuk, V.N. & Fogel', L.A. Electroreduction of Tellurium(IV) on Solid Electrodes in Neutral Solutions. Russian Journal of Electrochemistry 37, 626–628 (2001). https://doi.org/10.1023/A:1016626803350

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