Showing papers in "Journal of Electroanalytical Chemistry in 1994"

TL;DR: In this paper, the electrosynthesis of polyalkylenedioxythiophenes is described, starting with the anodic oxidation of 3,4-ethylenedioxyntiophene (1 ) or 3, 4-trimethylenedio-cyclophenes (2 ).

TL;DR: In this article, the authors show that capacitance dispersion due to irregular geometry appears at much higher frequencies than is usual in electrochemical methodologies and demonstrate that the capacitance on rough electrodes is due to adsorption effects.

TL;DR: Oxygen reduction was found to be sensitive to the crystallographic orientation of the platinum electrode surface as discussed by the authors, and a special cleaning procedure has been developed to remove impurities from the surface prior to the oxygen reduction measurements.

TL;DR: The pyridinium ion was found to be a novel homogeneous catalyst for the reduction of CO 2 to methanol as discussed by the authors, and the reduction process proceeds at low overpotentials.

TL;DR: In this article, the potential-dependent adsorption of sulfate on ordered Au(111) from acidic aqueous electrolytes has been examined in situ by means of IR reflection-absorption spectroscopy (IRAS) and by atomic-resolution scanning tunneling microscopy (STM) in order to explore further the nature of the adsorbate bonding and the structural changes attending the formation of the ordered adlayer at high potentials, as observed recently using STM.

TL;DR: In this article, the electropolymerization of substituted anilines (anthranilic acid, m-aminobenzoic acid and m-ammonobenzenesulphonic acid) was studied.

TL;DR: Differential electrochemical mass spectrometry was employed for the investigation of the electrocatalytic activity of Ru deposits and of bimetallic Pt/Ru co-deposits.

TL;DR: In this article, the authors used chronocoulometry and radiochemistry to measure the surface coverages of the Au(111) electrode surface, and the results indicated that SO 4 2− ion is the adsorbed species even if HSO 4 − predominates in the bulk of the solution.

TL;DR: The properties of a glassy carbon (GC) electrode modified by nickel hydroxide formed by ex situ chemical precipitation were studied by cyclic voltammetry in alkaline solutions.

TL;DR: In this paper, the response of a metal/electroactive polymer film/solution system to a low-amplitude variation of electrode polarization is analyzed, taking account of both the electrodiffusion transport of electronic and ionic species in the bulk film and non-equilibrium heterogeneous charge transfer, namely electrons at the metal-film boundary and ions at the film-solution boundary.

TL;DR: In this article, thermodynamic and kinetic aspects of the electrochemistry of l -cystine reduction and l-cysteine oxidation are reviewed both mercury and a range of solid electrodes are considered.

TL;DR: In this paper, the structural changes in the adlayer formed during underpotential deposition (and dissolution) of copper on Au(111) in sulphuric acid solution has been investigated by potential-step experiments.

TL;DR: In this article, the PQQ-modified electrodes were used for covalent immobilization of pyrroloquinoline quinone (PQQ) as a monolayer by carbodiimide coupling of the pQQ carboxylic groups with the surface amino groups.

TL;DR: In this paper, the electrochemistry of pyrroloquinoline quinone (PQQ) was studied in solubilized and immobilized states on a Au electrode modified with a chemisorbed cystamine monolayer.

TL;DR: In this paper, a new kind of bifunctional reagent was used to immobilize covalently monolayers of photosynthetic reaction centers (RCs) on a carbon electrode surface.

TL;DR: In this article, the adsorption and anodic oxidation of DNA denatured in acid at glassy carbon electrodes using differential pulse, square wave and cyclic voltammetry, and impedance have been obtained, in the pH range 0-12 and as a function of adsorization potential and time of adaption.

TL;DR: In this article, the impedance response of the Au/membrane/Au cell between 140 K and room temperature in the frequency range 10−2 to 106 Hz was measured for membranes aged either in air or in water after different pretreatments.

TL;DR: In this article, the Gibbs excess of copper coadsorbed with SO42− at the Au(111) electrode interface was measured using the thermodynamics of the perfectly polarized electrode.

TL;DR: In this article, LiClO 4 + ethanol was used to form NH 3 in tetrahydrofuran under an atmospheric pressure of 50 atm of N 2, and NH 3 was even formed (3.7% current efficiency) when air was used as a source.

TL;DR: In this article, the authors examined the effect of adsorbed palladium on formic acid oxidation and found that the activation of the modified Pdad + Pt(100) electrocatalyst was higher than that of bulk palladium.

TL;DR: In this paper, in-situ Fourier transform IR spectroscopy has been employed to study the adsorption of acetate on Pt(100), Pt(110) and Pt(111) electrodes.

TL;DR: In this paper, the authors show that the nucleation and growth mechanism of polyaniline films depends on the anions present in the electrolyte, the solubility of oligomers formed before the NGM process and the stirring conditions.

TL;DR: In this article, the Volmer-Heyrovsky-Tafel mechanism for the hydrogen evolution reaction in alkaline solutions, using a generalized adsorption model for the reaction intermediate, was solved under steady state conditions without any kinetic approximation.

TL;DR: In this paper, three ferrocenyl-alkanethiol derivatives with different functional groups linking ferrocene to an alkanethiol chain were synthesized and characterized electrochemically in bulk solution and in self-assembled monolayer films on gold electrodes.

TL;DR: In this paper, the effects of film thickness, counter-anions and film conditioning on the potentiometric response of polypyrrole films are studied, and it is demonstrated that the response can vary from anionic to cationic, depending on the charge-compensating counter anion (doping anion) incorporated during electropolymerization.

TL;DR: In this article, the authors investigated simple models of electrocatalytic reactions with the aim of determining the possible origins of instabilities and oscillations under three fundamentally different ways of external control of the electrical state of the electrochemical cell.

TL;DR: In this paper, the interaction of formic acid (HCOOH) with transition metal surfaces, as studied with the tools of modern surface science in an ultrahigh vacuum environment, is discussed.

TL;DR: In this article, a dissociative adsorption of formic acid on adatom modified Pt(100) electrodes was carried out as a way of studying inhibition of the poison formation reaction on these surfaces.