Showing papers in "Journal of Electroanalytical Chemistry in 1969"

TL;DR: In this article, a simple model is proposed to account for the effect of adsorbed species on the rate of an electrode reaction, which is expressed by the activity coefficient of the activated complex which can be calculated from the adsorption isotherm.

TL;DR: In this article, a critical discussion is presented of some important theories for the electrode impedance in the case that the electroactive species are specifically adsorbed at the electrode-solution interface.

TL;DR: In this article, it was shown that the Warburg (diffusion) impedance is coupled to the charge transfer resistance, even to the extent that the sign of the warburg impedance is determined by that of the charge transmission resistance.

TL;DR: In this article, the kinetic parameters for the one-electron reduction of a series of nitrocompounds in dimethylformamide covering three orders of magnitude have been determined by the impedance bridge.

TL;DR: In this article, a general relation between the faradaic admittance and the dc polarographic current has been derived and its applicability is demonstrated in the case of the negative faradaIC admittance of In(III) in 1 M NaSCN.

TL;DR: The surface charge density of silica in the presence of the chlorides of Mg2+, Ca2+, Sr2+ or Ba2+ was measured as a function of salt concentration, pH and history of the sample.

TL;DR: In this paper, it was shown that the coverage by oxygen on a platinum electrode increases continuously with potential until a limiting value of about 2.66 oxygen atoms/platinum atom is reached.

TL;DR: In this paper, linear potential sweep voltammetry in thin layers of solution has been proposed for the study of irreversible reactions, where the experimental equations, derived for representative reaction types, are simpler than their counterparts in ordinary voltameters, and may in some cases be solved directly for the electrochemical rate parameters, k0 and αn0.

TL;DR: Tin oxide, gold and platinum film optically transparent electrodes are evaluated for use in spectro-electrochemical studies of organic oxidations and reductions in non-aqueous solvents as discussed by the authors.

TL;DR: In this paper, electrical noise in electrochemical systems at equilibrium and in a non-equilibrium state is discussed, and it is shown that although little is to be gained from studies of noise in equilibrium systems connected with thermal agitation, experiments with systems far from equilibrium may cast some light on the mechanism of charge transfer.

TL;DR: In this paper, an instrument is described which will automatically plot the inphase and quadrature components of the electrode admittance in the fashion of a polarogram, and correction for uncompensated series resistance is achieved by positive feedback, and synchronous rectification is used for signal detection.

TL;DR: In this article, the authors studied the electrochemical reduction of halonitrobenzenes in three solvents: dimethylformamide (DMF), acetonitrile (AN), and dimethyl sulfoxide (DMSO).

TL;DR: In this paper, the half-wave potential of hydrazine on the dropping mercury electrode was obtained varying concentration, ionic strength and pH of the solution, and on rotating silver and gold disc electrodes varying concentration and pH, and speed of rotation of the electrode.

TL;DR: In this paper, a model is proposed to account for the anomalous effect of cations on the kinetics of electrode reactions, which is attributed to variation in the distance of closest approach to the electrode for the predominate cation in the double layer with both the cation's solvated radius and the field in the inner layer.

TL;DR: In this paper, the capacity of the mercury-solution interface was calculated on the basis of a model of three capacitors in parallel representing the surface with no adsorbed species and the surface oriented in two ways.

TL;DR: In this article, the Ruhrabhangigkeit des Grenzstroms bei relativ hohen Umdrehungszahlen untersucht.

TL;DR: In this article, the time-dependent charge density equation has been solved to determine the time dependences of the spatial distribution of electric field, electrolyte charge density and ionic current.

TL;DR: In this article, the effect of a homogeneous chemical reaction involving the optically monitored species formed electrochemically on the absorbance versus time curve is discussed quantitatively for the catalytic case.

TL;DR: In this paper, a non-thermodynamic approach is proposed for the analysis of experimental capacitance data obtained with the adsorption of camphor undergoing two-dimensional association at the mercury/solution interface.

TL;DR: In this paper, a method of determining the zero-charge potential of metal based on the photocurrent measurements in dilute electrolyte solutions has been proposed, and the effect of the ψ 1 -potential on photoemission proper can be quantitatively taken into account by substituting in the formula for I, φ−ψ 1 for the electrode potential, φ.

TL;DR: It was found that polynucleotides containing reducible bases, i.e. polycytidylic acid and polyadenylic acid, produce d.C.c. polarographic reduction steps that are of an adsorption character, and polyn nucleotides are adsorbed on the mercury electrode in a wide range of potentials, and desorbed at negative potential values.

TL;DR: In this paper, the theory of a new technique for the measurement of electrochemical rate constants is developed, and the double-step potentiostatic methods, hitherto applied only in the study of homogeneous kinetics, may be extended to the case of heterogeneous rate constants.

TL;DR: In this article, it was shown that thin layers of platinum and ruthenium on mercury behave differently from nuclei of the same metals grown on a carbon substrate, and that the mechanism of hydrogen evolution is controlled by direct discharge of H+ in the case of platinum, while the relative current densities into edge and top of the two dimensional layers being about 100:1.

TL;DR: In this article, the electrochemical reduction of germanium surfaces, i.e., the conversion from a hydroxide into a hydride surface, has been studied, and various current peaks occurring during a cathodic potential sweep could be related to specific crystal faces.

TL;DR: In this article, the formation kinetics of the adsorbed species "reduced CO2" (CO2) have been studied with Pt electrodes in 1 M H2SO4 at 40°.

TL;DR: In this paper, it was shown that dissolution of the electrode occurs as Ag(OH) − 2 at a rate too fast to measure, and that dissolution continues to a reduced extent through the Ag 2 O film.