Effects of a Surfactant on the Electrocatalytic Activity of Cobalt Hexacyanoferrate Modified Glassy Carbon Electrode Towards the Oxidation of Dopamine

Xun, Zhiyin; Cai, Chenxin; Lu, Tianhong

doi:10.1002/elan.200302821

Cited by 39 publications

(25 citation statements)

References 50 publications

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“…Focusing on the FTIR spectra shows that the stretching vibration of C N group in PbPCNF film is singlet. This indicates that there is one stoichiometric compound in PbPCNF system [50,51]. The wide absorption band at 3422.7 cm À1 is assigned to the O À H stretching vibration and other absorptive peak at 1636.2 cm…”

Section: Characterization Of the Filmmentioning

confidence: 94%

Preparation, Electrochemistry, and Electrocatalytic Activity of Lead Pentacyanonitrosylferrate Film Immobilized on Carbon Ceramic Electrode

Razmi

Heidari

2008

Electroanalysis

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Lead pentacyanonitrosylferrate (PbPCNF), a new Prussian blue analog, was immobilized on the surface of a carbon ceramic electrode (CCE) prepared by sol-gel method. The immobilization process consists of adding a certain amount of metallic lead to the electrode matrix before gelation, and chemical derivatization of Pb on the electrode surface to a PbPCNF solid film by immersing the electrode in a solution of sodium pentacyanonitrosylferrate (PCNF). The composition of the synthesized PbPCNF was characterized by FTIR, scanning electron microscopy (SEM), and energy-dispersive X-ray (EDX) techniques. The resulting modified electrode showed electroactivity at two redox centers. The electrochemical behavior of the PbPCNF modified carbon ceramic electrode (PbPCNF j CCE) was studied by cyclic voltammetry. Under optimized conditions the peak-to-peak separation is only 39 mV, indicative of a surface reaction. Ion effects of the supporting electrolyte suggest that cations have a considerable effect on the electrochemical behavior of the modified electrode. The transfer coefficient (a) and the charge transfer rate constant at the modifying film j electrode interface (k s ) were calculated. The electrocatalytic activity of the modified electrode toward the electro-reduction of peroxodisulfate was studied in details.

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Section: Characterization Of the Filmmentioning

confidence: 94%

Preparation, Electrochemistry, and Electrocatalytic Activity of Lead Pentacyanonitrosylferrate Film Immobilized on Carbon Ceramic Electrode

Razmi

Heidari

2008

Electroanalysis

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“…Due to the distinct amphiphilic structure and being surface active, surfactants are widely used in electrochemical investigations [16,17].…”

Section: Introductionmentioning

confidence: 99%

Highly Sensitive and Selective Voltammetric Sensor Fullerene Modified Glassy Carbon Electrode for Determination of Cefitizoxime in Solubilized System

Jain¹,

Rather²,

Dwivedi³

et al. 2010

Electroanalysis

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The usefulness of fullerene modified glassy carbon electrode in mediating the reduction of cefitizoxime in solubilized system has been demonstrated. Due to the unique structure and extraordinary properties, fullerene shows higher catalytic efficiency towards cefitizoxime reduction. The kinetic parameters, electron transfer coefficient (a) and rate constant (K 0 ) across the modified electrode are 0.37 and 0.1081/s respectively. The proposed square-wave voltammetric method is linear over the concentration range 1.2-10.3 mg/mL. The limit of detection (LOD) is found 0.27 ng/mL. High sensitivity and selectivity together with low detection limit of the electrode response make it suitable for the determination of cefitizoxime.

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“…Transition metal hexacyanoferrates (MHCFs) belong to a class of polynuclear inorganic mixed-valence compounds because of their reversible redox properties and their zeolitic structure [9][10][11][12], the color of prussian blue (PB) or iron (III) hexacyanoferrate (II) can be reversibly switched by electrochemical treatments [13]. Among the many transition metal hexacyanoferrates, cobalt hexacyanoferrate (CoHCF) has interesting chemical and electrochemical properties [14][15][16][17], which makes it a suitable modifier in many sensing applications.…”

Section: Introductionmentioning

confidence: 99%

“…Among the many transition metal hexacyanoferrates, cobalt hexacyanoferrate (CoHCF) has interesting chemical and electrochemical properties [14][15][16][17], which makes it a suitable modifier in many sensing applications. CoHCF exhibits well-defined and reproducible electrochemical responses at not only oxidized but also reduced states [10]. In addition, CoHCF film can also be easily fabricated on various electrode substrates [13] and CoHCF modified electrode shows good electrocatalytic activity toward a variety of substrates [14][15][16][17].…”

Section: Introductionmentioning

confidence: 99%

A Novel Catechol Electrochemical Sensor Based on Cobalt Hexacyanoferrate/ (CoHCF)/Au/SBA-15

2015

J Anal Bioanal Tech

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A novel electrochemical sensor for catechol was developed by electrodepositing HAuCl 4 and cobalt hexacyanoferrate (CoHCF) on an ordered mesoporous SBA-15 decorated glassy carbon electrode (GCE). The CoHCF/Au/SBA-15 film was characterized by scanning electron microscopy (SEM) and impedance spectra. A mesoporous SBA-15 was used as a platform that enlarged the surface area of the working electrode. The CoHCF/ Au/SBA-15 modified electrode showed good electrocatalytic activity to catechol and the electrocatalytic response was measured using cyclic voltammetry and Amperometric i-t curve. The electrochemical performance of the sensor for catechol was further enhanced due to the deposition of Au on the electrode surface. Under the optimal conditions, the sensor showed a linear range from 3.0 × 10 -7 M to 5.1 × 10 -5 M of catechol, with a detection limit of 50 nM (S/N=3). Good reproducibility, stability and good selectivity in the presence of numerous organic phenolics made the CoHCF/ Au/SBA-15 modified electrodes applicable to the determination of catechol in the various water samples.

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Effects of a Surfactant on the Electrocatalytic Activity of Cobalt Hexacyanoferrate Modified Glassy Carbon Electrode Towards the Oxidation of Dopamine

Cited by 39 publications

References 50 publications

Preparation, Electrochemistry, and Electrocatalytic Activity of Lead Pentacyanonitrosylferrate Film Immobilized on Carbon Ceramic Electrode

Preparation, Electrochemistry, and Electrocatalytic Activity of Lead Pentacyanonitrosylferrate Film Immobilized on Carbon Ceramic Electrode

Highly Sensitive and Selective Voltammetric Sensor Fullerene Modified Glassy Carbon Electrode for Determination of Cefitizoxime in Solubilized System

A Novel Catechol Electrochemical Sensor Based on Cobalt Hexacyanoferrate/ (CoHCF)/Au/SBA-15

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