Journal ArticleDOI
Analysis of irreversible oxidation wave of adsorbed CO at Pt(1 1 1), Pt(1 0 0) and Pt(1 1 0) electrodes
TLDR
In this paper, the sweep rate dependence of peak current and peak potential, as well as the form of the wave, were examined on the basis of the Gilman mechanism that the electron transfer from a complex consisting of CO and oxygen containing species is the rate-determining step.Abstract:
The oxidation wave of CO preadsorbed at 50 mV on Pt(1 1 1), (1 0 0) and (1 1 0) electrodes in phosphate buffer solution of pH 3 was observed as a function of the sweep rate. The sweep rate dependence of the peak current and peak potential, as well as the form of the wave, were examined on the basis of the Gilman mechanism that the electron transfer from a complex consisting of CO and oxygen containing species is the rate-determining step. An electron transfer step from CO itself was excluded. The peak current and peak potential analyses and the wave simulation gave the same value for Δf, the change in the interaction energy during the formation of the activated complex from the reactants. Δf was sweep-rate and surface-structure dependent. The nature of Δf was discussed.read more
Citations
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Journal ArticleDOI
Electrooxidation of CO and H2/CO Mixtures on Pt(111) in Acid Solutions
TL;DR: In this paper, the role played by two different forms of COad: weakly adsorbed and strongly adorbed states were investigated. But the results presented in this paper are limited to the preoxidation region of the CO adlayer.
Journal ArticleDOI
Potential dependence of the saturation CO coverage of Pt electrodes: The origin of the pre-peak in CO-stripping voltammograms. Part 3: Pt(poly)
TL;DR: In this paper, the authors showed that in CO-free solutions, the maximum coverage is θCO = 0.68 and that higher coverages can only be achieved in the presence of CO in the solution.
Journal ArticleDOI
Electrocatalysts by design: from the tailored surface to a commercial catalyst
Nenad M. Markovic,Philip N. Ross +1 more
TL;DR: In this paper, a materials-by-design approach to the development of new electrocatalysts is presented, where the knowledge is then used to create tailor-made surfaces, usually using UHV surface processing techniques, having the required microscopic structure to produce the desired catalytic properties.
Journal ArticleDOI
Surface Electrochemistry of CO and H2/CO Mixtures at Pt(100) Interface: Electrode Kinetics and Interfacial Structures
TL;DR: In this paper, the Pt(100)−CO interaction in aqueous electrolytes was examined by using rotating disk methods in combination with in-situ surface X-ray scattering (SXS) measurements.
Journal ArticleDOI
Potential-dependence of CO adlayer structures on Pt(111) electrodes in acid solution: Evidence for a site selective charge transfer
TL;DR: In this article, the authors investigated the CO oxidation on a Pt(111) electrode surface under transient and stationary reaction conditions in a 0.1 M HClO4 aqueous solution as a function of the applied electrode potential.
References
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Preparation of monocrystalline Pt microelectrodes and electrochemical study of the plane surfaces cut in the direction of the {111} and {110} planes
Journal ArticleDOI
Surface linear potential sweep voltammetry
TL;DR: In this paper, a theoretical study of the adsorption peaks appearing in linear potential sweep voltammetry is presented under the following conditions: (a) the electrochemical reaction is reversible; (b) both the oxidized and the reduced forms are strongly adsorbed; and (c) allowance is made in the isotherm for interactions between the adorbed molecules.
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Kinetic theory of pseudo-capacitance and electrode reactions at appreciable surface coverage
B. E. Conway,Eliezer Gileadi +1 more
TL;DR: In this article, the reversible potential of the nickel oxide (N^-Ni 1 1 1/1 ) electrode has been determined by the state of a surface phase, which is completely charged when the bulk oxide material in the electrode had been charged to 10% of its total charge capacity.
Journal ArticleDOI
The potential-sweep method: A theoretical analysis☆
S. Srinivasan,Eliezer Gileadi +1 more
TL;DR: Potential sweep method for organic and adsorption analyses, showing relation between galvanostatic and fast potential sweep transients, noting mathematical analysis of current-potential transients as mentioned in this paper.
Journal ArticleDOI
Computer simulation of the kinetic behaviour of surface reactions driven by a linear potential sweep
TL;DR: In this paper, the kinetic behavior of a simple 1 e surface reaction is treated theoretically, especially with regard to characteristic aspects of its behaviour when significant attractive or repulsive interactions arise in the electrodeposited film and formulation of characteristic features of its kinetic and equilibrium behaviour which can provide a reference case for distinguishing, by comparison, the behaviour of other more complex sequential reactions treated in Part II.