A new, improved sensor for ascorbate determination at copper hexacyanoferrate modified carbon film electrodes

Pauliukaitė, Rasa; Ghica, Mariana Emilia; Brett, Christopher M.A.

doi:10.1007/s00216-004-2958-6

Cited by 47 publications

(18 citation statements)

References 46 publications

(80 reference statements)

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“…Copper hexacyanoferrate (CuHCF) films were prepared by cyclic voltammetry as in [21] but using lower precursor concentrations. During deposition, the cyclic voltammograms exhibited two pairs of redox peaks (Fig.…”

Section: Immobilization Of the Redox Mediator: Core-shell Pamam-au@mementioning

confidence: 99%

Electroactive Nanostructured Membranes (ENM): Synthesis and Electrochemical Properties of Redox Mediator‐Modified Gold Nanoparticles Using a Dendrimer Layer‐by‐Layer Approach

et al. 2007

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The layer-by-layer (LbL) self-assembly process has become an important tool in the fabrication of nanostructured devices for electrochemical applications, especially in those cases where control at the molecular level is required. In this paper we present a system based on electroactive nanostructured membranes (ENM) with ITO-PVS/PAMAM-Au LbL electrodes, in which a redox mediator (Me) is electrodeposited around the Au nanoparticles to form an ITO-PVS/ PAMAM-Au@Me system. The redox mediators used were Co, Fe, Ni and Cu hexacyanoferrates. The 3-bilayer ITO-PVS/ PAMAM-Au@Me system was characterized electrochemically by cyclic voltammetry and electrochemical impedance spectroscopy. All hexacyanoferrate modified electrodes showed electrocatalytic activity towards hydrogen peroxide, thus demonstrating that this new approach can be used in biosensors and nanodevices, where a redox mediator is required.

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Section: Immobilization Of the Redox Mediator: Core-shell Pamam-au@mementioning

confidence: 99%

Electroactive Nanostructured Membranes (ENM): Synthesis and Electrochemical Properties of Redox Mediator‐Modified Gold Nanoparticles Using a Dendrimer Layer‐by‐Layer Approach

et al. 2007

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“…In the present work we describe, for the first time, the polymerisation of EDOT on carbon film electrodes (CFE) made from carbon film electrical resistors of 2 [23] that have been used successfully in various sensor and biosensor applications [17,24]. PEDOT modified electrodes were prepared in aqueous solution by potential cycling, potentiostatic and galvanostatic methods.…”

Section: Introductionmentioning

confidence: 99%

Preparation and characterisation of poly(3,4-ethylenedioxythiophene) and poly(3,4-ethylenedioxythiophene)/poly(neutral red) modified carbon film electrodes, and application as sensors for hydrogen peroxide

Gonçalves

Ghica

Brett

2011

Electrochimica Acta

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Please cite this article as: A.R. Gonçalves, M.E. Ghica, C.M.A. Brett, Preparation and characterisation of poly (3,4-ethylenedioxythiophene) and poly(3,4-ethylenedioxythiophene)/poly(neutral red) modified carbon film electrodes; and application as sensors for hydrogen peroxide, Electrochimica Acta (2010Acta ( ), doi:10.1016Acta ( /j.electacta.2010 This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published in its final form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. carbon-film electrodes (CFE) in aqueous solution using electropolymerisation by potential cycling, potentiostatically and galavanostatically. Characterisation of the modified electrodes was done by cyclic voltammetry and electrochemical impedance spectroscopy and the stability of the polymer films was probed. The coated electrodes were tested for application as hydrogen peroxide sensors, by oxidation and reduction. A novel polymer film was also formed by modification of CFE by co-electropolymerisation of EDOT and the phenazine dye neutral red (NR) -(PEDOT/PNR) with a view to enhancing the properties for sensor applications. It was found that hydrogen peroxide reduction at the PEDOT/PNR coated electrodes could be carried out at a less negative potential, the sensor performance comparing very favourably with that of other polymer-modified electrodes reported in the literature.

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“…In recent reports, metal hexacyanoferrates (MHCFs) such as NdHCF [21], AgHCF [22], SnHCF [23], CoHCF [24], NiHCF [25], CuHCF [26], etc., on various electrode substrates have been used for the determination of AA, DA or UA. MHCFs have also received much attention in many fields because of their special properties and potential applications [27 -29].…”

Section: Introductionmentioning

confidence: 99%

Selective Electroanalysis of Ascorbic Acid Using a Nickel Hexacyanoferrate and Poly(3,4‐ethylenedioxythiophene) Hybrid Film Modified Electrode

Tsai

Chen

2010

Electroanalysis

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The mixed-valent nickel hexacyanoferrate (NiHCF) and poly(3,4-ethylenedioxythiophene) (PEDOT) hybrid film (NiHCF-PEDOT) was prepared on a glassy carbon electrode (GCE) by multiple scan cyclic voltammetry. The films were characterized using atomic force microscopy, field emission scanning electron microscopy, energy dispersive spectroscopy, X-ray diffraction, and electrochemical impedance spectroscopy (AC impedance). The advantages of these films were demonstrated for the detection of ascorbic acid (AA) using cyclic voltammetry and amperometric techniques. The electrocatalytic oxidation of AA at different electrode surfaces, such as the bare GCE, the NiHCF/ GCE, and the NiHCF-PEDOT/GCE modified electrodes, was determined in phosphate buffer solution (pH 7). The AA electrochemical sensor exhibited a linear response from 5 Â 10 À6 to 1.5 Â 10 À4 M (R 2 ¼ 0.9973) and from 1.55 Â 10 À4 to 3 Â 10 À4 M (R 2 ¼ 0.9983), detection limit ¼ 1 Â 10 À6 M, with a fast response time (3 s) for AA determination. In addition, the NiHCF-PEDOT/GCE was advantageous in terms of its simple preparation, specificity, stability and reproducibility.

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A new, improved sensor for ascorbate determination at copper hexacyanoferrate modified carbon film electrodes

Cited by 47 publications

References 46 publications

Electroactive Nanostructured Membranes (ENM): Synthesis and Electrochemical Properties of Redox Mediator‐Modified Gold Nanoparticles Using a Dendrimer Layer‐by‐Layer Approach

Electroactive Nanostructured Membranes (ENM): Synthesis and Electrochemical Properties of Redox Mediator‐Modified Gold Nanoparticles Using a Dendrimer Layer‐by‐Layer Approach

Preparation and characterisation of poly(3,4-ethylenedioxythiophene) and poly(3,4-ethylenedioxythiophene)/poly(neutral red) modified carbon film electrodes, and application as sensors for hydrogen peroxide

Selective Electroanalysis of Ascorbic Acid Using a Nickel Hexacyanoferrate and Poly(3,4‐ethylenedioxythiophene) Hybrid Film Modified Electrode

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