Note on the hydrogen adsorption—desorption voltammogram on Pt(111) in sulfuric acid solution

Thermodynamic analysis of (bi)sulphate adsorption on a Pt(111) electrode as a function of pH

“…5 shows selected results of the calculation of the formal partial charge numbers, l and n (Eqs. (14) and (15)), plotted against potential. The error bars correspond to the standard deviation of the slope obtained from the lineal regression of the plot Q vs. Γ anion at constant E for the calculation of l, and of the plot E vs. μ anion at constant Q for the calculation of n .…”

“…Shingaya and Ito [6] proposed that this feature could be due to the conversion of adsorbed bisulphate to sulphuric acid, based on the similarity of FTIRRAS spectra obtained in UHV and in electrochemical media. On the contrary, Nishihara and Nozoye [14] tentatively proposed the conversion of adsorbed bisulphate to sulphate. However, STM studies performed by Funtikov et al [8] concluded that the ordered ( √ 3 × √ 7)R19.1 • (bi)sulphate structure disappears at potentials higher than the hump, suggesting that this feature is related to an order/disorder phase transition.…”

Effect of pH and Alkaline Metal Cations on the Voltammetry of Pt(111) Single Crystal Electrodes in Sulfuric Acid Solution

“…Nishihara and Nozoye studied this voltammetric feature by means of electrochemical impedance spectroscopy 24. They observed the existence of a slow process in parallel with the purely capacitative charging of the interface at potentials lower than the hump.…”

Preparation and characterization of 3‐[(1H‐1,2,4‐triazole‐3‐ylimino)methyl]naphtalene‐2‐ol film at the platinum surface for selective voltammetric determination of dopamine in the presence of uric acid and ascorbic acid

“…Its electrode processes are also studied using EIS . Various EIS studies of Pt electrodes have been reported in the literature …”