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Volume 8, Issue 2 (Suppl) Chem Sci J 2017
ISSN: 2150-3494 CSJ, an open access journal Euro Chemistry 2017
May 11-13, 2017
May 11-13, 2017 Barcelona, Spain
4th European Chemistry Congress
Electrodeposition of nickel on glassy carbon electrode: The rotating disk study
Batric Pesic
University of Idaho, USA
Electrodeposition of nickel was studied by using rotating disk technique. The electrode substrate was glassy carbon disk cut
from a glassy carbon wafer produced by Toshiba. The disk was mounted on a rotation speed controlled rotator made by IBM
Instruments. The electrochemical deposition was studied from nickel ammonium sulfate solutions of different concentrations and
pH, as the reaction parameters. The electrochemical techniques used were cyclic voltammetry, linear sweep voltammetry, and
chronoamperometry. The key feature of this study is that amount of electrodeposited disk was determined by two methods i.e. charge
passed and amount of nickel deposited at particular time intervals, such as 15, 30 and 60 seconds. Charge was determined by using
a coulometer wired in line with the working electrode. Nickel deposited was determined by dissolution in nitric acid and analysis by
atomic absorption. Both types of data were used in Levich equation for determination of kinetic parameters, such as reaction order,
activation energy, etc. For example, it was found that electrodeposition of nickel is of first order, and that the activation energy was
only 2.7 kcal/mol indicating, a mass transfer controlled reaction. The current efficiency was a function of concentration, increasing
with the increase of nickel concentration. Morphology of electrodeposit was very smooth as confirmed by atomic force microscopy.
Biography
Batric Pesic is a distinguished Professor at the University of Idaho. He has received BS degree in Metallurgical Engineering from the University of Belgrade; MS
(1976) and PhD (1982) from the University of Utah, USA. Upon graduation, he moved to Canada and worked for HBMS, Flin Flon, Manitoba. In 1983, he joined
the University of Idaho, USA. His research interests have been, initially in extractive metallurgy, followed by environmental subjects. Currently, he is doing his
research on electrochemistry of molten salts. He has extensive consulting experience with major chemical and metallurgical corporations in North America, Europe
and Africa.
Batric Pesic, Chem Sci J 2017, 8:2(Suppl)