Journals Information
Universal Journal of Chemistry(CEASE PUBLICATION) Vol. 1(2), pp. 30 - 37
DOI: 10.13189/ujc.2013.010203
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Bismuth Doped PbO2 Coatings: Morphology and Electrocatalytic Properties
O. Shmychkova, T. Luk'yanenko, A. Velichenko*
Physical Chemistry Department, Ukrainian State University of Chemical Technology, 49005 Dniepropetrovsk, Ukraine
ABSTRACT
Modified PbO2 anodes doped with bismuth were prepared by means of electrodeposition in methanesulfonate solutions. The influence of bismuth ions on morphological and electrocatalytic properties of obtained coatings was studied. Both XRD patterns and SEM micrographs demonstrated that incorporation of bismuth diminishes the size of crystal particles. It is shown, that oxygen overpotential on micromodified electrodes is sensibly higher than on non-modified PbO2-electrode. According to obtained results a hypothesis of a mechanism which include transfer of an increased number oxygen radical intermediates to Bi(III) to produce a sensible amount of Bi(IV) and Bi(V) that can participate in the O2 evolution process was proposed.
KEYWORDS
Methanesulfonate Electrolyte, Lead Dioxide, Bismuth, Morphology, Oxygen Overpotential
Cite This Paper in IEEE or APA Citation Styles
(a). IEEE Format:
[1] O. Shmychkova , T. Luk'yanenko , A. Velichenko , "Bismuth Doped PbO2 Coatings: Morphology and Electrocatalytic Properties," Universal Journal of Chemistry(CEASE PUBLICATION), Vol. 1, No. 2, pp. 30 - 37, 2013. DOI: 10.13189/ujc.2013.010203.
(b). APA Format:
O. Shmychkova , T. Luk'yanenko , A. Velichenko (2013). Bismuth Doped PbO2 Coatings: Morphology and Electrocatalytic Properties. Universal Journal of Chemistry(CEASE PUBLICATION), 1(2), 30 - 37. DOI: 10.13189/ujc.2013.010203.