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2 Polish Journal of Chemistry

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The Influence of Toluidine Isomers on the Two-Step Electroreduction of Zn(II) Ions on a Mercury Electrode

100%

Nieszporek J. , Dalmata G. , Sieńko D. , Saba J.

Polish Journal of Chemistry

2000

tom Vol. 74, nr 12

1769-1780

The two-step reduction of Zn(II) ions at the dropping mercury electrode in 1 MNaClO4/0.001MHClO4 with the addition of the isomers toluidine: o-, m- and p-, using an impedance method in wide potential and frequency ranges, was examined. The catalytic activity of m-toluidine and p-toluidine concerns both electron transfer steps. However, o-toluidine shows an inhibiting effect on these two stages, which may result from the hindrance of the group –CH3 of o-toluidine in formation of complexes with Zn(II) ions.

Mixed Adsorption Layers Formed at the Electrode-Solution Interface

88%

Nieszporek J. , Gugała D. , Sieńko D. , Jankowska J. , Saba J.

Polish Journal of Chemistry

2004

tom Vol. 78 / nr 9

1087-1101

The current knowledge and most recent advances in the study of mixed adsorption layers on the mercury electrode have been reviewed. Wide spectrum of two-component adsorbate systems containing neutral organic molecules as well as organic and inorganic ions have been presented. The effect of co-adsorption on the kinetics of electrode processes (inhibition in particular) has been discussed.