Voltammetric behaviour and electrocatalytic activity of the aluminum electrode modified with nickel and nickel hexacyanoferrate films, prepared by electroless deposition

Pournaghi-Azar, M.H.; Razmi-Nerbin, H.

doi:10.1016/s0022-0728(98)00284-8

Cited by 90 publications

(49 citation statements)

References 37 publications

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“…In this regard we have recently developed a simple electroless procedure for the immobilization of nickel hexacyanoferrate (NiHCF) film on the Al surface. 34 In addition, we have reported the electroless preparation and electrochemistry of nickel pentacyanonitrosylferrate (NiPCNF)-coated Al electrode. 35 The NiPCNF|Al electrode was used for the electrooxidation of ascorbic acid, 36 thiosulfate, 37 hydrazine, 38 dopamine, 39 and iodide.…”

Section: Introductionmentioning

confidence: 99%

Application of a Palladium Hexacyanoferrate Film-Modified Aluminum Electrode to Electrocatalytic Oxidation of Hydrazine

2005

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A palladium hexacyanoferrate (PdHCF) film as an electrocatalytic material was obtained at an aluminum (Al) electrode by a simple electroless dipping method. The modified Al electrode demonstrated a well-behaved redox couple due to the redox reaction of the PdHCF film. The PdHCF film showed an excellent electrocatalytic activity toward the oxidation of hydrazine. The electrocatalytic oxidation of hydrazine was studied by cyclic voltammetry and rotating disk electrode voltammetry techniques. A calibration graph obtained for the hydrazine consisted of two segments (localized at concentration ranges 0.39 -10 and 20 -75 mM). The rate constant k and transfer coefficient α for the catalytic reaction and the diffusion coefficient of hydrazine in the solution D, were found to be 3.11 × 10 3 M -1 s -1 , 0.52 and 8.03 × 10 -6 cm 2 s -1 respectively. The modified electrode was used to amperometric determination of hydrazine in photographic developer. The interference of ascorbic acid and thiosulfate were investigated and greatly reduced using a thin film of Nafion on the modified electrode. The modified electrode indicated reproducible behavior and a high level of stability during electrochemical experiments, making it particularly suitable for analytical purposes.

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Section: Introductionmentioning

confidence: 99%

Application of a Palladium Hexacyanoferrate Film-Modified Aluminum Electrode to Electrocatalytic Oxidation of Hydrazine

2005

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“…These metallic electrodes do not function well for amperometric senor devices for the detection of ascorbic acid, primarily due to the fouling of the electrode surface by the oxidative products along with the kinetics of the electron transfer being sluggish in nature. Hence the electrocatalysis of ascorbic acid through the employment of transition metal macrocyclic compounds [31], conducting polymeric films [32,33], ferrocene carboxylic acids [34], and transition metal hexacyanoferrates [35,36] has been investigated over the past number of years. In addition some chemically modified electrodes with various mediators attached at the electrode surface have been employed for the mediated oxidation of ascorbic acid [37][38][39][40].…”

Section: Introductionmentioning

confidence: 99%

Voltammetric behaviour, homogeneous charge transport dynamics and electrocatalytic properties of an Os2+ functionalised pyrrole monomer

Foster¹,

Allen²,

McCormac³

2004

Journal of Electroanalytical Chemistry

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The Os 2+ functionalised pyrrole monomer, Osmium-bis-N,N'-(2,2'-bipyridyl)-N-(pyridine-4-ylmethyl-(8-pyrrole-1yl-octyl)-amine)chloride, 1, has been synthesised and characterised by spectroscopic (UV/Vis, 1 H NMR, IR spectroscopy) techniques and cyclic voltammetry.Solution phase studies of 1 gave a redox couple associated with the Os 3+/2+ and an irreversible wave associated with the oxidation of the pyrrole moiety. Attempts to form stable polymeric films of 1 onto vitreous carbon electrodes, by homopolymerisation, proved unsuccessful. However electroactive films of 1 were obtained by the electrooxidation of 1 through the Os 3+/2+ couple in low dielectric media such as toluene/acetonitrile mixtures.

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“…Recently we reported a research work dealing with the electroless modi®cation techniques to yield redox-active surface species on very oxidatively unstable substrate such as Al. Nickel-hexacyanoferrate deposited on the Al electrode was employed as model system for this purpose [18]. 3 , histidine, 1,2-cyclohexyldiamine) could be immobilized on a Ni electrode.…”

Section: Introductionmentioning

confidence: 99%

Electroless Preparation and Electrochemistry of Nickel-Pentacyanonitrosylferrate Film Modified Aluminum Electrode

Pournaghi-Azar

Razmi-Nerbin

2000

Electroanalysis

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The use of aluminum substrate as an electrode and the modi®cation of its surface by means of the thin ®lm of nickel pentacyanonitrosylferrate (NiPCNF) was developed. The modi®cation conditions of aluminum surface including the electroless deposition of metallic nickel on the electrode surface from NiCl 2 NH 4 Cl solution and chemical derivatization of deposited nickel to NiPCNF ®lm in solution of 10 mM sodium pentacyanonitrosylferrate (PCNF) 0.5 M NaNO 3 0.03 M HNO 3 are described. The modi®ed Al electrode prepared under optimum conditions, shows a well-de®ned redox couple due to [Ni II Fe III/II (CN) 5 NO] 0/71 system. The effect of pH and radius of the hydrated alkali-metal cation of supporting electrolyte on the electrochemical characteristics of the modi®ed electrode were studied in detail. Diffusion coef®cients of alkali-metal cations in the ®lm (D),transfer rate constant for electron (k s ) and transfer coef®cient (a) were calculated. The electrocatalytic activity of the modi®ed electrode on the oxidation of hydrogen peroxide and ascorbic acid was demonstrated as a typical example of applications.

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Voltammetric behaviour and electrocatalytic activity of the aluminum electrode modified with nickel and nickel hexacyanoferrate films, prepared by electroless deposition

Cited by 90 publications

References 37 publications

Application of a Palladium Hexacyanoferrate Film-Modified Aluminum Electrode to Electrocatalytic Oxidation of Hydrazine

Application of a Palladium Hexacyanoferrate Film-Modified Aluminum Electrode to Electrocatalytic Oxidation of Hydrazine

Voltammetric behaviour, homogeneous charge transport dynamics and electrocatalytic properties of an Os2+ functionalised pyrrole monomer

Electroless Preparation and Electrochemistry of Nickel-Pentacyanonitrosylferrate Film Modified Aluminum Electrode

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