Electrodeposition of palladium in H2O and D2O
avoin
Julkaisu on tekijänoikeussäännösten alainen. Teosta voi lukea ja tulostaa henkilökohtaista käyttöä varten. Käyttö kaupallisiin tarkoituksiin on kielletty.
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In this Master’s thesis the electrodeposition of palladium on pencil graphite in
aqueous solutions of either H2O or D2O at different acidities was examined experimentally
utilizing chronoamperometry and cyclic voltammetry. Electrochemical
cells and their theory was examined along with how electrochemical reactions occur
on the electrode surfaces. Based on the experiments the nucleation process was
observed to follow progressive nucleation mechanism as described by Scharifker-
Hills theory. Current profiles from chronoamperometric measurements followed the
theoretical description by Heerman and Tarallo and values for nucleation constant
per site, number density of active sites and diffusion coefficients were obtained for
each sample solution. Overall the effects of using D2O instead of H2O had only
small effects on these values and should be examined in further experiments more
thoroughly.