Showing papers in "Journal of Electroanalytical Chemistry in 1972"

TL;DR: In this paper, the dependence of the exchange current for the electrolytic evolution of hydrogen on metals (i 0,H ) on the work function is analyzed on the basic of a new list of polycrystalline surfaces.

TL;DR: In this paper, it is emphasized that metal dissolution currents should not be ignored when examining electrochemical processes on noble metals at anodic potentials, and evidence in support of an anodic mechanism for noble metal corrosion has been obtained from studies of the variation of dissolution rate with both potential and temperature.

TL;DR: In this paper, the authors derived the impedance for an electrochemical reaction with an adsorbed intermediate, and the behavior of the impedance as displayed in the complex impedance plane was considered.

TL;DR: In this article, the capacity of the basal plane of high-pressure stress-annealed pyrolytic graphite has been examined in aqueous solution using an a.c. impedance bridge.

TL;DR: In this paper, the problem of cell resitance compensation with a system comprising a potentiostat, a current measurer and a positive feedback device is discussed in relation to stability in the case of linear sweep voltammetry.

TL;DR: In this article, a new technique has been developed for the investigation of double layers on solid electrodes enabling the direct measurement of ion adsorption and the detection of the electrocapillary maximum.

TL;DR: In this paper, the potential of the oxygen desorption peak on a voltammogram was found to vary linearly with surface composition of homogeneous platinum-rhodium, palladium rhodium and palladium-gold alloy surfaces.

TL;DR: In this paper, the electrophoretic mobility of polystyrene particles, with carboxylated surfaces, has been investigated as a function of particle size, pH, electrolyte concentration and electrolyte type.

TL;DR: In this paper, current/potential curves have been obtained for the ferrous/ferric reaction at a rotating disc electrode in background electrolytes of 1 M HClO4, 0.5 M H2SO4 and 0.4 M KHSO4.

TL;DR: In this article, the current density i+ of platinum oxide layer formation was measured in dependence on potential e, time t and coverage ϑ or the equivalent layer thickness under potentiostatic conditions in 0.5 M H2SO4.

TL;DR: In this paper, an analysis of the thickness profile of a circular soap film and its Plateau border is given, where it is shown that in principle the thickness as a function of the radial distance, h(r), for a single film, can provide details of the interaction free energy ΔF(h) over a large range of h.

TL;DR: In this article, the formation and reduction of platinum oxide layers in 0.5 M H2SO4 was investigated by galvanostatic pulse measurements, and the results led to the conclusion that the properties of the layer are dependent on the formation conditions of layer, i.e. the formation rate, the ageing of layer and the method of the setting of the coverage (anodic/increase or cathodic/decrease).

TL;DR: Anodic stripping voltammetry with a polished glassy carbon electrode mercury-plated in situ was applied to the determination of trace metals in seawater, seaweeds and marine organisms as discussed by the authors.

TL;DR: In this paper, a theoretical study of current-potential curves in thin layer linear potential sweep voltammetry is presented for a reversible electrochemical reaction O+ ne R coupled with an irreversible chemical reaction.

TL;DR: In this article, the voltammograms of Pt, Pd, Rh, Ir and Au are compared in sulphuric acid for concentrations of 1.5 M. The difference between the anion adsorption (Cl− and SO42−) and strong sulphURic acid on the shapes of the voltamograms is demonstrated.

TL;DR: In this paper, the standard potential of the O 2 −0.270 V/NHE system has been determined by comparing the data obtained by pulse polarography and reoxidation chronocoulometry.

TL;DR: In this article, it was shown that the double layer of apatites is characterized by the existence of a series of p.z.c.'s lying on a line on the equilibrium surface.

TL;DR: In this article, a dispersion of monodisperse polystyrene spheres with a constant and known surface charge due to chemically-bound strong-acid surface groups is presented. But the results are not suitable for the use of polystyrenes.

TL;DR: In this article, the surface condition of an iron electrode at different potentials has been determined from sweep measurements, and the mechanism of this latter reaction is Fe → slow Fe (II ), Fe ( II ) → fast Fe (III ).

TL;DR: In this paper, a theory has been developed for outer-sphere non-adiabatic electron transfer reactions at electrodes, to or from which an electron is transferred via ionic or molecular bridge species adsorbed on the electrode surface.

TL;DR: In this article, it was shown that CH 3 CN occupied 3 Pt sites per molecule at adsorption saturation leaving 33% of the surface available for co-adsorption of H 2 SO 4.

TL;DR: In this article, a solution-precipitation mechanism was proposed for the formation of PbSO 4 by the electrochemical oxidation of the Pb in H 2 SO 4.

TL;DR: In this paper, the dependence of the non-stationary currents of formic acid, formaldehyde and methanol on the degree of coverage of the platinum electrode by adsorbed sulphur and the effect of adaption of sulphur on the electrooxidation of methenol and formaldehyde have been studied.

TL;DR: In this article, the authors reported the oxidation of hydrazine at an oxide covered nickel anode by charging of the oxide layer followed by a chemical reaction between the higher nickel oxide and hydrazines.

TL;DR: In this paper, the anodic dissolution of Pb in H2SO4 has been investigated and the Pb dissolves as Pb2+ and PbSO4 ions at low anodic potentials.

TL;DR: In this paper, a set of i 0 values selected on the basis of pre-determined criteria were used to evaluate the correlation between electrocatalytic and physical properties with periodic number rather than any dependence of one on the other.

TL;DR: In this paper, a theoretical study of the peaks appearing in linear potential sweep voltammetry is presented under the following conditions: (a) the electrochemical reaction is reversible; (b) the depolarizer and the products of the reaction are strongly adsorbed; (c) the product of the electro chemical reaction undergoes a first-order reaction according to the scheme: O + n e ⇄ R R → k Z.

TL;DR: In this article, the Tafel slope was determined by four independent techniques (shift of the peak potential with sweep rate in linear potential sweep, foot of the current/potential curve in the same measurement, galvanostatic and steady state potentiostatic) all of which gave values in the range of 90-100 mV.

TL;DR: In this article, a semi-empirical correction factor for the Hamaker-Deryaguin formula was proposed, and the dispersion interaction constants calculated with the corrected formula agree with those calculated by means of the Lifshitz-Dzyaloshinskii equation within 4%, while the original Hamaker Deryagin equation gives results that, on average, are about 40% too low.