2003
DOI: 10.1590/s0103-50532003000400006
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Abstract: Neste trabalho, foi estudado o comportamento eletroquímico de estanho policristalino em soluções de tampão borato com pH 7.5, utilizando voltametria cíclica, eletroquímica com microscopia de varredura (EC-STM) e espectroscopia de impedância eletroquímica. Os potenciais do pico principal de redução do óxido e de geração de hidrogênio deslocaram-se de forma sistemática para valores mais negativos quando se aumentou o potencial anódico de formação do filme. Foi discutida a natureza dos diferentes óxidos formados … Show more

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Cited by 19 publications
(19 citation statements)
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“…The broad, slowly decreasing slope, on peak (II) observed for the potassium bicarbonate-carbonate electrolyte solution was considered by Drogowska et al [17] to correspond to a dehydration reaction that resulted, via multiple reaction steps, in the formation of SnO 2 . In a later study of Sn oxides formed in pH 7.5 borate buffer, Diaz et al [14] proposed that peaks (I) and (II) both corresponded to the formation of Sn (II) species.…”
Section: Electrochemical Oxidation and Characterisationmentioning
confidence: 99%
See 1 more Smart Citation
“…The broad, slowly decreasing slope, on peak (II) observed for the potassium bicarbonate-carbonate electrolyte solution was considered by Drogowska et al [17] to correspond to a dehydration reaction that resulted, via multiple reaction steps, in the formation of SnO 2 . In a later study of Sn oxides formed in pH 7.5 borate buffer, Diaz et al [14] proposed that peaks (I) and (II) both corresponded to the formation of Sn (II) species.…”
Section: Electrochemical Oxidation and Characterisationmentioning
confidence: 99%
“…residual stress levels [7] and intermetallic type and distribution [13]). Electrochemical oxidation has been performed in two different electrolyte solutions; a borate buffer solution [14,15] and a potassium bicarbonate-carbonate solution [16]. Initial cyclic voltammetry trials were performed in both electrolyte solutions to study the tin oxidation processes, followed by oxidation at selected potentials identified from the cyclic voltammagrams.…”
Section: Introductionmentioning
confidence: 99%
“…Peaks I and II have been attributed previously to the two Sn oxidation states, Sn(II) and Sn(IV) respectively 18,19 . However, Díaz et al 20 have also suggested that oxidation peaks I and II both corresponded to the oxidation of Sn to Sn(II).…”
Section: Development Of the Electrochemical Oxidementioning
confidence: 99%
“…In turn, the presence of symmetric peaks allows an optimized resolution of the voltammograms, from nonlinear regression analysis based on Gaussian functions. This inherently simpler approach was often followed for different electrochemical systems [15][16][17], and also for analogous systems [18], including the electrochemical behaviour of tin electrodes in borate buffer solutions [19,20]. For the present system only peaks A3 and C3 exhibit diffusional effects.…”
Section: Potential Sweeping Experiments In Buffer With Ph = 50mentioning
confidence: 99%