Use of a zeolite-modified electrode for the study of the methylviologen–sodium ion-exchange in zeolite Y

Walcarius, Alain; Mariaulle, Pascal; Lamberts, L.

doi:10.1016/s0022-0728(98)00452-5

Cited by 28 publications

(22 citation statements)

References 43 publications

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“…This resulted in a new steady state situation, with peak heights yet slightly larger than those obtained at the bare electrode (i.e., 10 mA). these currents are due to the only strongly retained [Ru(NH 3 ) 6 ] 3þ ions within the film after the establishment of an equilibrium between the probe initially preconcentrated in the film and the supporting electrolyte cations [51,60]. Figure 3B depicts the curves recorded by multisweep cyclic voltammetry when a freshly prepared Na-Sa film modified electrode was dipped into a solution containing 1 mM [Fe(CN) 6 ] 3À (in 0.1 M NaCl).…”

Section: Physicochemical Characterization Of the Modifiedmentioning

confidence: 99%

Permselective and Preconcentration Properties of a Surfactant‐Intercalated Clay Modified Electrode

et al. 2006

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This work is focused on the voltammetric examination of the ion exchange properties of a smectite type clay, before and after its modification by the replacement of its native interlamellar cations (Na) by hexadecyltrimethylammonium cations (HDTMA þ ). The raw clay and its organically modified form were first characterized by X-ray diffraction (XRD) and N 2 adsorption -desorption isotherms (BET method) that confirmed the modification via an intercalation process. These materials were subsequently coated onto glassy carbon surfaces, and the resulting modified electrodes were evaluated for the uptake of [Ru(NH 3 ) 6 ] 3þ and [Fe(CN) 6 ] 3À ions used as redox probes. Some experimental parameters affecting the incorporation of the probes within the film, including the ionic strength, the surfactant loading and the solution pH are thoroughly examined, in order to highlight the mechanism of the process. The possibility of using the surfactant-intercalated clay modified electrode as an electrochemical sensor for [Fe(CN) 6 ] 3À is also evaluated.

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Section: Physicochemical Characterization Of the Modifiedmentioning

confidence: 99%

Permselective and Preconcentration Properties of a Surfactant‐Intercalated Clay Modified Electrode

et al. 2006

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“…They are characterized by a chemically altered surface displaying new qualities that can be exploited for electrochemical purposes. Zeolitemodified electrode (ZMEs) form a subcategory of the chemically modified electrodes, which were largely studied [7,8]. There are three major reasons why ZMEs are interesting.…”

Section: Introductionmentioning

confidence: 99%

Electrocatalytic characteristics of uric acid oxidation at graphite–zeolite-modified electrode doped with iron (III)

Mazloum-Ardakani

Akrami

Kazemian

et al. 2006

Journal of Electroanalytical Chemistry

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“…Zeolite is a common material that is usually employed as an inert feature of high interest in the design of the electrochemical sensors, because of its properties, i.e., shape, size and charge selectivities, physical and chemical stabilities, high ion-exchange and sorption ca-pacity [25,26]. The use of mixtures of a zeolite and graphite has been proposed since the 1980s [25], and Cu-doped zeolite expanded graphite-epoxy composite electrodes are electrocatalytically active for a range of different analytes according to the recent publications [27,28].…”

Section: Introductionmentioning

confidence: 99%

Electrochemical Determination of Diclofenac Sodium in Aqueous Solution on Cu‐Doped Zeolite‐Expanded Graphite‐Epoxy Electrode

et al. 2010

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The electrochemical oxidation and determination of diclofenac sodium (DCF) at Cu-doped zeolite-modified expanded graphite-epoxy composite (CuZEGE) electrode was evaluated for a new alternative of quantitative determination of sodium diclofenac in aqueous solutions. Cyclic voltammetry was used to characterize the electrochemical behaviour of the electrode in the presence of diclofenac sodium in a 0.1 M NaOH supporting electrolyte. This modified electrode exhibited electrocatalytic effect towards sodium diclofenac oxidation, allowing its determination in aqueous solution. The linear dependence of the current versus diclofenac concentration was obtained using cyclic voltammetry, chronoamperometry, differential-pulsed voltammetry. The limit of detection for DCF reached by direct analysis on CuZEGE is from 2 10 À5 to 3 10 À7 M in relation with used technique and the potential value. Substantial enhancement of the electroanalytical parameters, e.g. the limit of detection of 5 10 À8 M. for the determination of DCF at CuZEGE electrode was reached by applying a chemical preconcentration step prior to voltammetric quantification.

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Use of a zeolite-modified electrode for the study of the methylviologen–sodium ion-exchange in zeolite Y

Cited by 28 publications

References 43 publications

Permselective and Preconcentration Properties of a Surfactant‐Intercalated Clay Modified Electrode

Permselective and Preconcentration Properties of a Surfactant‐Intercalated Clay Modified Electrode

Electrocatalytic characteristics of uric acid oxidation at graphite–zeolite-modified electrode doped with iron (III)

Electrochemical Determination of Diclofenac Sodium in Aqueous Solution on Cu‐Doped Zeolite‐Expanded Graphite‐Epoxy Electrode

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