A new simple long‐path‐length thin‐layer spectroelectrochemical cell in various uses

Hexacyanoferrate(III)/(II) system has been studied by UV-visible long-pathway spectroelectrochemistry. Three different methodologies, based on potentiodynamic techniques, have been successfully used in the thermodynamic characterization of the system. Formation of soluble Prussian Blue has been detected during the electrode process. The values of the formal potential (E 0' 0.200 V) and the electron stoichiometry of this side-reaction (n 0.5) have been obtained.

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“…4À 6 ] system, either to validate thin-layer spectroelectrochemical cells or simply to estimate parameters of the redox process [7,8,38,39].…”

Section: Spectroelectrochemical Characterization Of the Hexacyanoferrmentioning

confidence: 99%

UV‐Visible Spectroelectrochemical Detection of Side‐Reactions in the Hexacyanoferrate(III)/(II) Electrode Process

Heras¹,

Colina²,

Ruiz³

et al. 2003

Electroanalysis

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“…The thin layer has restricted diffusion and exchange with the bulk solution, which leads to high uncompensated resistance and distorted responses at all but the lowest scan rates. Thus, cyclic voltammetry waves are often distorted with greater peak separations in the CVs than expected [134]. On the other hand, edge effects may mean that the edges are not at equilibrium so it is better to mask the area interrogated by the beam.…”

Section: Ottle Cell Electrochemical and Spectroscopic Responsementioning

confidence: 99%

“…Overlapping bands are often responsible for nonlinear Nernstian plots in OTTLE studies [139]. There are only a few examples of the use of differentiating the absorbance [134], least-squares analysis [140], of the latest chemometric techniques [141]. In the latter study, evolutionary factor analysis of the spectra arising from the reduction of E. coli reductase hemoprotein (SiR-HP 2− ) in which three species are present and the reduction of the [Cl 2 FeS 2 MoS 2 FeCl 2 ] 2− (four species present).…”

Section: Ottle Cell Electrochemical and Spectroscopic Responsementioning

confidence: 99%

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Spectroelectrochemistry: In s itu UV ‐visible Spectroscopy

Crayston

2003

Encyclopedia of Electrochemistry

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The sections in this article are Introduction and Principles Introductory Remarks Theory and Techniques: Steady State Measurement Cell Transmission for a Simple Electron Transfer Reaction: Determination of E and n Effect of Follow‐up Reactions in OTTLE Cells Theory and Techniques: Kinetic Measurements Chronoabsorptometry Instrumentation for Chronoabsorptometry Slow Heterogeneous Kinetics Effect of Follow‐up Reactions Derivative Cyclic Voltabsorptometry ( DCVA ) Galvanostatic Conditions Adsorption Cell Geometries, Design, Techniques, and Instrumentation General Considerations Transmission under Thin‐layer Conditions: OTTLEs and Flow‐cells Variations on and Alternatives to the Basic OTTLE Design OTTLE Cells Intended for Both UV ‐visible and FTIR Use OTTLE Cell Electrochemical and Spectroscopic Response Semi‐infinite Cells: Optically Transparent Electrodes ( OTEs ) Reflection from Electrodes and Liquid–Liquid Interfaces Glancing Incidence Reflection, Near‐parallel or Parallel Reflection, and Diffraction Liquid–Liquid Interface and Attenuated Total Reflection Long Optical Path‐length Thin‐layer Cell ( LOPTLC ) Forced Convection, RDE and Channel Flow UV ‐vis Combined with Other Spectroscopic Techniques Applications Solution Studies of Inorganic Species Solution Studies of Organic Species Molten Salts Spectroelectrochemistry Studies of Species of Biological Interest Inorganic Thin Films and Modified Electrodes Conducting Polymers and Oligomer Models Conclusions

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“…They also give the possibility of controlling the electrochemical properties by varying the selection of the main constituents and of their ratios on the carbon paste electrode [22,23]. Recent research interest has focussed on the preparation of insoluble inorganicorganic hybrid POMs and their application in electrode modification [24][25][26][27][28][29], especially in carbon paste electrodes [30][31][32][33][34], because inorganic-organic hybrid POMs modified CPE supply a wide range of solubility for POMs.…”

Section: Introductionmentioning

confidence: 99%

Electrochemical behavior of an inorganic–organic hybrid based on isopolymolybdate anions and ethylenediamine

Zhang

O’Halloran

et al. 2009

J Appl Electrochem

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The one-dimensional inorganic-organic compound, (C 2 H 10 N 2 )[Mo 3 O 10 ], was synthesized hydrothermally, and characterized by single crystal X-ray diffraction. The compound was used as a bulk-modifier to fabricate a renewable three-dimensional chemically modified carbon paste electrode (Mo-CPE) by direct mixing. The electrochemical properties of (C 2 H 10 N 2 )[Mo 3 O 10 ]-modified Mo-CPE were investigated with respect to their pH-dependence, stability and electrocatalytic activity. The hybrid material bulk modified Mo-CPE not only displays good electrocatalytic activity toward the reduction of BrO 3 -, IO 3 -, NO 2 -and H 2 O 2 , but also exhibits good stability and multiple repeatability by simply polishing on the surface of a wet filter paper, a feature which is important for practical applications.

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A new simple long‐path‐length thin‐layer spectroelectrochemical cell in various uses

Cited by 17 publications

References 22 publications

UV‐Visible Spectroelectrochemical Detection of Side‐Reactions in the Hexacyanoferrate(III)/(II) Electrode Process

UV‐Visible Spectroelectrochemical Detection of Side‐Reactions in the Hexacyanoferrate(III)/(II) Electrode Process

Spectroelectrochemistry: In s itu UV ‐visible Spectroscopy

Electrochemical behavior of an inorganic–organic hybrid based on isopolymolybdate anions and ethylenediamine

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