Showing papers in "Journal of Electroanalytical Chemistry in 1985"

TL;DR: In this paper, it is confirmed that the polymerization of aniline proceeds through a head-to-tail coupling of a cation radical, and that the participation of the ortho positions in the electropolymerization mechanism is a possibility to take into consideration.

TL;DR: In this paper, a procedure for treating glassy carbon to create an active electrode was described, and a level of activity comparable to that of active Pt has been attained, determined by the heterogeneous electron transfer rate (0.14±0.01 cm/s) of ferri-/ferro-cyanide.

TL;DR: In this paper, the surface composition of Au-Pt and Au-pd alloy electrodes has been investigated for methanol oxidation and the results indicate that surface composition plays predominant roles in the methenol oxidation.

TL;DR: Very small Nafion-coated voltammetric electrodes are very advantageous for in vivo detection of catecholamine neurotransmitters as mentioned in this paper, and their quantitative characteristics with regard to partitioning of the catecholine into the NAFion film have been studied.

TL;DR: In this paper, it was shown that when glucose is brought into contact with a platinum electrode, the catalytic decomposition of glucose molecules occurs in addition to the formation of strongly chemisorbed particles.

TL;DR: In this paper, the authors reported results for the direct oxidation of the enzyme glucose oxidase on 7 different one-dimensional conducting donor acceptor salts, made of the cations tetrathiafulvalinium (TTF+), N-methylphenazinium or quinolinium with the anion tetracyanoquinodimethanide (TCNQ−) with the lowest background currents and used to make membrane sensors for glucose.

TL;DR: In this article, a comparative study has been made of glucose electrooxidation on electrodes made of metals of group VIII, Ag, Au, Cu and glassy carbon as well as of phthalocyanines and porphyrins of cobalt, manganese and iron.

TL;DR: In this article, the first monolayer of electrosorbed oxygen at a gold electrode was shown to proceed via a three step reaction sequence: (a) Au-(H2O)ads → Au-OH+H++ e−.

TL;DR: In this article, the ability of ferrocene monocarboxylic acid to act as mediator to some oxido-reductases was investigated using cyclic voltammetry.

TL;DR: In this article, the micro-structure of the reaction layer and the performance of a PTFE-bonded gas diffusion electrode having different pTFE contents have been studied experimentally using electrochemical techniques and a mercury pore sizer.

TL;DR: In this paper, the elementary steps of the anodic oxidation of ethanol on Pt in sulfuric acid are visualized with differential electrochemical mass spectroscopy (DEMS) by means of deuterium and 18 O labelling.

TL;DR: In this paper, the current respone at microcylinder, band, and tubular band electrodes has been evaluated for the reduction of ferricyanide in aqueous potassium chloride solutions in excellent agreement with that predicted by equations derived for heat flux to a cylinder.

TL;DR: In this article, cyclic voltammetric measurements of adsorbed Fe-and Co-tetrasulfonated phthalocyanine (TsPc) and Co-phthalocyanines (Pc), were carried out on ordinary pyrolytic graphite and silver electrodes at different solution pH ranging from 1 to 13.

TL;DR: In this paper, the mechanism and kinetics of electroreduction of carbon dioxide in aqueous solutions on metals with high and moderate hydrogen overvoltages (Sn, Ie, Bi, Sb, Cd, Zn, Cu, Pb, Ga, Ag, Au, Ni, Fe, W, Mo, and glassy carbon) are studied.

TL;DR: In this article, the apparent heterogeneous rate constant, k°app, for three couples known to undergo outer-sphere electron transfer reactions has been investigated at carbon, gold, and platinum electrodes as a function of solution pH.

TL;DR: In this article, an expression for reversible linear sweep voltammograms at stationary microcylinder electrodes is presented for various values of the dimensionless parameter, p=(nFa2v/RTD) 1 2, where a is the radius of the electrode, v the potential sweep rate and D the diffusion coefficient.

TL;DR: In this article, the influence of surface states on the steady-state and intensity modulated photocurrent response of semiconductor electrodes is considered in terms of a model which takes account of the kinetics of electron exchange with components of the electrolyte.

TL;DR: In this paper, two pairs of anodic-cathodic waves associated with reversible bromide-assisted oxidation of mercury were observed at positive potentials, indicating that t-butyl radicals engage in combination and disproportionation.

TL;DR: In this article, a model for describing the mediation kinetics of film-coated electrodes quantitatively is extended to account for a finite mass transfer rate of the substrate across the film-solution interface.

TL;DR: In this article, a voltammetrie cyclique and diffusion Raman augmentee en surface du comportement des composes du titre adsorbes sur une electrode d'or.

TL;DR: In this paper, 1,2-Benzophenoxazine-7-one (BPO) was absorbed on graphite to give a chemically modified electrode for electrocatalytic oxidation of dihydronicotinamide adenine dinucleotide (NADH).

TL;DR: In this paper, the oxidative polymerization of polypyridinyl complexes of ruthenium(II) that contain pyrrolic groups on their surrounding ligands has been investigated.

TL;DR: In this paper, the formation during the redox process of polypyrrole (PPy) species starting from the allowed electronic transitions of the polymer is described by two monoelectromic transfers: PPPP·+ + 1e− (E1) PP·+(E2) An evaluation of the absorbance coefficients of the cationic and dicationic species is provided Chronoabsortometry allows the electrochemical parameters and kinetics of the processes to be estimated.

TL;DR: In this article, the steady state operation of an amperometric enzyme is derived, and a simple diagnostic plot is derived which allows the rate limiting process to be identified, and the balance between the transport of substrate through the membrane and the enzyme and electrochemical kinetics to be determined.

TL;DR: Etudes des proprietes redox de lacide silicotungstique 1:12, (SiW 12 O 40 H 11 ), utilise pour modifier et activer divers materiaux d'electrode (Pt, Au, W, carbone vitreux, etc) as mentioned in this paper.

TL;DR: Differential electrochemical mass spectroscopy (DEMS) was used to obtain information about the strongly adsorbed intermediate during methanol electrooxidation on platinum in sulfuric acid.

TL;DR: In this paper, a simplified and versatile preparation method of the electrode having high specific surface area platinum with a well-defined tin coverage has been developed, which consists of underpotential deposition of ad-atoms and subsequent anodic treatment resulting in uniform dispersion of the adatoms over all the platinum clusters in the catalyst layer of the electrodes.

TL;DR: In this paper, the reduction electrochimique du nitrobenzene was studied in the presence of electrodes de Pt, d'Au, and carbone vitreux.

TL;DR: In this article, the authors investigated the charging and discharging of polypyrrole films in basic AlCl 3 /1-methyl-(3-ethyl)-imidazolium chloride molten salts and CH 3 CN.