Review of Polarography
Online ISSN : 1884-7692
Print ISSN : 0034-6691
ISSN-L : 0034-6691
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Volume 61, Issue 1
Displaying 1-9 of 9 articles from this issue
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Preface
Award Review Articles, 2014 Shikata Medal
  • Electrochemical Study of Ion Distribution at Liquid|Liquid and Liquid|Membrane Interfaces
    Yumi Yoshida
    2015 Volume 61 Issue 1 Pages 3-10
    Published: May 13, 2015
    Released on J-STAGE: June 12, 2015
    DOIhttps://doi.org/10.5189/revpolarography.61.3
    JOURNAL FREE ACCESS
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    The distribution of ions at the liquid|liquid interface is the principle reaction of analytical methods for the determination and separation of ions such as ion-pair extraction and ion-selective electrodes. To elucidate the ion-distribution mechanism at the liquid|liquid interface, ion-transfer voltammetry with the liquid|liquid interface was employed, by which the transfer of a single ion at the liquid|liquid interface could be observed. This article reviews our studies on ion distribution at the liquid|liquid and liquid|membrane interfaces involved in analytical methods such as ion-pair extraction, ion-selective electrodes and electrolytic ion-extraction.
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  • Recent Achievements in the Analysis of the Electrochemical Properties of Polyoxometalates
    Tadaharu Ueda
    2015 Volume 61 Issue 1 Pages 11-19
    Published: May 13, 2015
    Released on J-STAGE: June 12, 2015
    DOIhttps://doi.org/10.5189/revpolarography.61.11
    JOURNAL FREE ACCESS
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    Polyoxometalates (POMs) have been studied for ca. 200 years since the first report on the synthesis of (NH4)3PMo12O40 in 1826. Even now, novel POMs are still being prepared, characterized and applied to various fields. Multi-step, multi-electron transfers reversibly occur for many redox active POMs, which is interesting to many electrochemists. Recently, the electrocatalytic behaviour of POMs has been focussed on due to the potential as a solution for energy problems. However, unclear aspects remain in terms of the fundamental electrochemical properties of POMs. This article reviews recent achievements on the electrochemistry of POMs in the solution phase.
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Review Articles
  • Fourier Transformed Large Amplitude Alternating Current Voltammetry: Principles and Applications
    Si-Xuan Guo, Alan M. Bond, Jie Zhang
    2015 Volume 61 Issue 1 Pages 21-32
    Published: May 13, 2015
    Released on J-STAGE: June 12, 2015
    DOIhttps://doi.org/10.5189/revpolarography.61.21
    JOURNAL FREE ACCESS
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    In this review article, the basic principles of Fourier transformed large amplitude ac voltammetry (FTACV), as developed by the Monash Electrochemistry Group, are surveyed. Special attention is paid to the key features associated with the higher order harmonic components of FTACV that are not available in dc transient voltammetry, including (1) enhanced kinetic sensitivity; (2) rejection of background charging current and (3) insensitivity to homogenous catalysis coupled to electron transfer. Examples are then given to demonstrate the high sensitivity offered by FTACV in studies of surface-confined processes and electrode kinetic determinations, and the ability to extract thermodynamic information relevant to the electron transfer step and kinetic data for the coupled catalytic process separately under catalytic turnover conditions.
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  • Dynamic Behavior of Electric Double Layer Impedance
    Koichi Jeremiah Aoki
    2015 Volume 61 Issue 1 Pages 33-42
    Published: May 13, 2015
    Released on J-STAGE: June 12, 2015
    DOIhttps://doi.org/10.5189/revpolarography.61.33
    JOURNAL FREE ACCESS
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    Electric double layer capacitance has the time-dependence with the power law of the ac-frequency. The dependence gives rise to a resistance component at the interface when the impedance is measured dynamically. The interfacial resistance does not really exist but is inevitably involved in the measured current as a result of the time-dependent capacitance. It is infinite for dc-response, but decreases with an increase in the ac-frequency in the inversely proportional form. It cannot be discriminated against the heterogeneous kinetics. The frequency-dependence agrees with the behavior of the constant phase element. The capacitance is brought about by orientation of solvent molecules, independent of concentration of salts, kinds of salts, and applied dc-potential. The orientation is modeled by combination of the external electric field and the interaction of nearest neighboring solvent molecules. Since the former conflicts with the latter in the orientation, phases may be formed two-dimensionally with competition, which prolong the relaxation with the lower law.
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Conference Reports
Errata
Editor’s Note
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