Electroreduction of bismuth(III) ion on bismuth electrode has been studied by means of multi-cyclic voltammetry in the solutions containing nitric, sulphuric, and perchloric acids. The cathodic peak of bismuth(III) ions reduction was observed in nitric acid solution, and the cathodic wave was appeared in multicyclic experiments. A study of purely nitric acid solution as well as solutions containing bismuth(III) ion together with sulphuric or perchloric acids shows that the cathodic wave is caused by the reduction of nitrate-ions being catalyzed by electrodeposited bismuth.
электроосаждение, нитрат-ионы, ионы висмута(III), висмут, азотная, серная, хлорная кислоты, многократное циклирование, electrodeposition, nitrate ion, bismuth(III) -ion, bismuth, nitric, sulphuric, perchloric acids, multi-cyclic voltammetry
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