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A study of the adsorption kinetics of 1-octanethiol and 1,8-octanedithiol has been carried out on gold electrode by cyclic voltammetry with different concentrations. Analysis of the kinetic data show that the adsorption kinetics of 1-octanethiol and 1,8-octanedithiol can be satisfactorily described by Diffusion controlled Langmuir(DCL) model, irrespective of concentration. The rate constants of 1-octanethiol...
As shown by quartz-crystal microbalance measurements, in the potential range from 0.0 to 0.55 V (NHE) sulfide ions adsorbed on the gold electrode surface accelerate the electrode reaction of anodic dissolution of gold in acidic thiocarbamide solutions. The microbalance determination of kinetic parameters at a constant electrode surface coverage with sulfide ions includes a special procedure developed...
Surface effects from contaminants and oxidation will be investigated for gold and copper metallic nanowires. The objectives are to investigate effects from adsorption and diffusion of C and/or O and their effects on resistance. Also, the possibility of using gold as a diffusion barrier will be investigated as part of this research.
We have measured impedance spectra on Au(111) electrode in aqueous perchlorate solutions containing specifically adsorbing anions (SO 42- , Cl - , Br - and I - ) of about 10 -4 M concentrations at potentials where the dominant electrode process is the adsorption of the above anions. Accordingly, the impedance spectra have been analyzed in terms...
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