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Supporting electrolyte

About: Supporting electrolyte is a research topic. Over the lifetime, 5011 publications have been published within this topic receiving 104172 citations.


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Journal ArticleDOI
TL;DR: In this article, the diffusion coefficients of ferrocene (fc) and the electroactive surfaces A and/or radii r of the electrodes were determined for PC, CH3CN, CH2Cl2, DMF, and DMSO electrolytes.
Abstract: Cyclic voltammetry data recorded at disk macro- (millimeter dimension) and microelectrodes (10 and 100 μm) at various scan rates are used to simultaneously determine the diffusion coefficient D of ferrocene (fc) and the electroactive surfaces A and/or radii r of the electrodes. A case study with three electrodes of different sizes in CH3CN- and propylene carbonate (PC)-based electrolytes shows the possibly large effect of incorrect D values. Diffusion coefficients of fc are determined for PC, CH3CN, CH2Cl2, DMF, and DMSO electrolytes and (except for PC) compared to those from pulse-gradient spin-echo nuclear magnetic resonance experiments in the presence of supporting electrolyte in the respective deuterated solvents. The dependence of D fc on solvent viscosity is shown to follow the Stokes–Einstein relation.

37 citations

Journal ArticleDOI
TL;DR: In this article, the emission resulting from the reaction of electrogenerated radical anions and cations (D - + ) for four systems which provide evidence for the intermediacy of excimers or exciplexes is described.

37 citations

Journal ArticleDOI
TL;DR: In this article, the electrochemical properties of the Cu 2+ center in several copper-substituted heteropolyanions were investigated and various behaviors of the copper deposition process were observed depending on the presence of chloride in the supporting electrolyte.

37 citations

Journal ArticleDOI
TL;DR: In this article, the influence of the supporting electrolyte composition and the redox state on the analyte partitioning within the Nafion coating was examined by using cyclic voltammetry.
Abstract: Nafion coated glassy carbon electrodes (NCE) are employed for preconcentrating and detecting Fe2+ and Fe3+ cations from aqueous solutions. The influence of the supporting electrolyte composition and of the redox state on the analyte partitioning within the Nafion coating are examined. By using cyclic voltammetry, the ion-exchange voltammetric determination of iron in the μM concentration range is achieved from voltammetric peak currents relevant to the reversible redox process: Fe3++e⇋Fe2+. Depending on the starting potential of the voltammetric scan, all the iron is initially converted to the Fe(III) or Fe(II) redox state, so that, from the voltammogram, the overall concentration of iron is always obtained. However, the simple measurement of the open circuit potential at the NCE before starting the scan allows one to get information on the ratio between Fe(III) and Fe(II) incorporated in the Nafion coating. From relevant ion-exchange distribution coefficients, open circuit potential values can be related to the Fe(III)/Fe(II) concentration ratio in the sample. The use at the NCE of a new electroanalytical technique named multiple square-wave voltammetry in the double differential mode allows the significative lowering of detection limits pushing the operative range of the method in the nM range. Application to analysis of Fe(II) in the pore-waters of sediments of the lagoon of Venice (Italy) is presented.

37 citations

Journal ArticleDOI
TL;DR: A novel approach of wastewater treatment technology that consists of a combined electrodialysis/electro-oxidation process, specially designed to allow increasing the efficiency in the oxidation of ionic organic pollutants contained in diluted waste, opens the way for overcoming the efficiency limitations of electrochemical treatment processes for the treatment of solutions with low concentrated ionic pollutants.

37 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
202335
2022104
2021109
2020122
2019122
2018147