Electrodeposition of Copper on Pt(111) Pretreated with Organic Adsorbates
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C. Alonso
The deposition of copper on Pt(111) has been studied in the underpotential (UPD) and overpotential (OPD) regions using cyclic voltammetry in the presence of organic co-adsorbates including pyridine, pyrazine, 2,2’-bipyridine, 4,4’-bipyridine, 4-phenylpyridine, 1,2-bis(4-pyridyl)ethane and 1,2-bis(4-pyridyl)ethylene dissolved in either 0.5 M H2SO4 or water. Adsorbates bind primarily through a ring nitrogen atom, delaying both UPD and OPD processes according to the bond strength of the adsorbed layer. These adsorbates also show a significant pH dependence due to protonation of the binding nitrogen atom. Their behavior has been compared in neutral and acid media, taking into account packing density, molecular footprints, adsorbed layer thickness, ability to form complexes with copper ions, and adsorption strength.
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Articles in the same Issue
- Empirical Interatomic Potential from Polarized and Depolarized Interaction-Induced Light Scattering Spectra for Gaseous Helium
- Preferential Solvation in 2-Propanol/Water Mixtures: Relationship between Solvatochromic Parameters and Ionization and Transfer Thermodynamics of Nalidixic Acid Antibiotic
- Electrodeposition of Copper on Pt(111) Pretreated with Organic Adsorbates
- Kinetics and Mechanism of the Thermal Gas-Phase Reaction between NO2 and Trifluorochloroethene
- Anomalous X-Ray Scattering Studies on Glassy GexSe1−x across the Stiffness Threshold Composition x = 0.20
- Thermodynamics of Dissolution of some Dicarboxylic Acids in Water/Ethane-1,2-Diol Mixtures
- Effects of Pressure on Two Types of Complexations of 4-Dimethylaminoazobenzene with β-Cyclodextrin
- Book Reviews
