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The Under Potential Deposition of Cu on Au (111) in Nonaqueous Acetonitrile
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Kadir Pekmez
Published/Copyright:
October 8, 2012
Abstract
The underpotential deposition (UPD) of Copper on Au(111) in nonaqueous acetonitrile/perchlorate electrolyte has been investigated. The deposition mechanism is thereby strongly influenced by coadsorbed acetonitrile molecules and the stability of the solvation shell around the Cu(I) ions. The UPD mechanism obeys a two step mechanism even in presence of only none specifically adsorbing perchlorate ions. Thereby the first sub monolayer of copper is stabilized by coadsorbed acetonitrile molecules. However already 5% vol water content changes the structure within the double layer and consequently degrades the copper sub monolayer. At about 20% vol water content the Cu(I) ion/solvent complex is still stable. The reduction of Cu(I) ions from this complex is much faster compared to the reduction from the respective Cu(II) water complex.
Published Online: 2012-10-8
Published in Print: 2012-10-1
© by Oldenbourg Wissenschaftsverlag, München, Germany
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Articles in the same Issue
- Preface
- Building versus Structure Elements: Ionic Charge Carriers in Solids
- A Brief Review of Determinism in the Prediction of Localized Corrosion Damage
- La0.6Sr0.4CoO3-δ (LSC) Thin Film Electrodes with Very Fast Oxygen Reduction Kinetics Prepared by a Sol-Gel Route
- Nitrate Reduction on Platinum (111) Surfaces Modifiedl with Bi: Single Crystalsl and Nanoparticles
- Fundamental Investigation of the HER on a Pt(111) Surface at Temperatures down to 120K
- Impedance Spectra of Pt(100) in Aqueous H2SO4 and HCl Solutions Around the Hydrogen Adsorption-Desorption Peak
- Lifting of Thermally-Induced Surface Reconstruction on Au(100) Electrode by Protonated Molecules of Dopamine
- The Under Potential Deposition of Cu on Au (111) in Nonaqueous Acetonitrile
- Lead Underpotential Deposition on Pt-submonolayer Modified Au(111)
- Adsorption of Solvent Cations on Au(111) and Au(100) in Alkylimidazolium-Based Ionic Liquids – Worm-Like versus Micelle-Like Structures
- Measurements of the Potentials of Zero Free Charge and Zero Total Charge for 1-thio- ± bβ-D-glucose and DPTL Modified Au(111) Surface in Different Electrolyte Solutions
- Tert-Pentanol Adsorption on Ag(100) and Ag(110) from an Aqueous Solution and its Comparison with that on Ag(111), Hg, Ga and Bi(001)
- Tetrahedral Palladium Nanocrystals: A New Support for Platinum Monolayer Electrocatalysts with High Activity and Stability in the Oxygen Reduction Reaction
- Surface Modification of a n-Si(111) Electrode through Aldehyde Grafting and Subsequent Metallization: Theory and Experiment
- Ion Transfer Mechanisms Accompanying p-Doping of Poly(3,4-Ethylenedioxythiophene) Films in Deep Eutectic Solvents
- Adsorption of Additives: Hardness and Softness at Electrified Interfaces
