Copper Electrodeposition on Iridium, Ruthenium and Its Conductive Oxide Substrate Page: I
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Huang, Long, Copper Electrodeposition on Iridium, Ruthenium and Its Conductive
Oxide Substrate. Master of Science (Analytical Chemistry), December 2003, 81 pp.,
14 tables, 65 illustrations, references, 52 titles.
The aim of this thesis was to investigate the physical and electrochemical
properties of sub monolayer and monolayer of copper deposition on the
polycrystalline iridium, ruthenium and its conductive oxide. The electrochemical
methods cyclic voltammetry (CV) and chronocoulometry were used to study the under
potential deposition. The electrochemical methods to oxidize the ruthenium metal are
presented, and the electrochemical properties of the oxide ruthenium are studied.
The full range of CV is presented in this thesis, and the distances between the
stripping bulk peak and stripping UPD peak in various concentration of CuSO4 on
iridium, ruthenium and its conductive oxide are shown, which yields thermodynamic
data on relative difference of bonding strength between Cu-Ru/Ir atoms and Cu-Cu
atoms. The monolayer of UPD on ruthenium is about 0.5mL, and on oxidized
ruthenium is around 0.9mL to 1.0mL. The conductive oxide ruthenium presents the
similar properties of ruthenium metal. The pH effect of stripping bulk peak and
stripping UPD peak of copper deposition on ruthenium and oxide ruthenium was
investigated. The stripping UPD peak and stripping bulk peak disappeared after the
pH > 3 on oxidized ruthenium electrode, and a new peak appeared, which means the
condition of pH is very important. The results show that the Cl-, S042-, Br will affect
the position of stripping bulk peak and stripping UPD peak: the stripping bulk peak will
shift and decrease if the concentration of halide ions is increasing, and the monolayerof UPD will increase at the same time.
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Huang, Long. Copper Electrodeposition on Iridium, Ruthenium and Its Conductive Oxide Substrate, thesis, December 2003; Denton, Texas. (https://digital.library.unt.edu/ark:/67531/metadc4416/m1/2/: accessed March 28, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; .