Mechanisms of charge transfer at the chemically derivatized interface:  the Ni/[NiII(CN)FeII/III(CN)5]2-/1- system as an electrocatalyst

Humphrey, Brian D.; Sinha, Sujit; Bocarsly, Andrew Bruce

doi:10.1021/j100287a020

Cited by 137 publications

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“…Although several papers on M1M2HCFs have been reported, [15][16][17] the number of papers about M1M2HCFs was far fewer than the number about single component MHCF. [1][2][3][4][5][6][7][8][9][10][11][12][13][14] To our best knowledge, no paper on electrocatalytical properties of M1M2HCF-modified electrodes has been published.…”

Section: -11mentioning

confidence: 99%

“…Although several papers on M1M2HCFs have been reported, 15-17 the number of papers about M1M2HCFs was far fewer than the number about single component MHCF. [1][2][3][4][5][6][7][8][9][10][11][12][13][14] To our best knowledge, no paper on electrocatalytical properties of M1M2HCF-modified electrodes has been published.In our recent papers, [18][19][20] hybrid copper-cobalt hexacyanoferrate (CuCoHCF) films were electrodeposited on a substrate electrode and characterized by electrochemistry, XRD, ICP-AES and XPS. The results indicated that CuCoHCF was a substitution-type hybrid hexacyanoferrate in which the cyano moiety with its C atom coordinating to Fe(II), and N atom coordinating to Cu(II) or Co(II), formed the edge of a cubic lattice.…”

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confidence: 99%

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Electrocatalytic Oxidation of Hydroxylamine on Glassy Carbon Electrodes Modified by Hybrid Copper-Cobalt Hexacyanoferrate Films

Cui

Lin

2002

ANAL. SCI.

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Transition metal hexacyanoferrates (MHCFs) are one type of inorganic polymers and have been widely used in electrochemistry to electrocatalyze the oxidation of dopamine, 1 ascorbic acid, 2 hydroquinone, 2 NADH, 3 glutathione, 4,5 cysteine, 5 H2O2 6 and the reduction of Fe 3+ , 7 CO2, 8 H2O2. 9-11When combined with glucose oxidase, MHCF modified electrodes can also be applied as biosensors for glucose. [12][13][14] Hybrid metal hexacyanoferrates (M1M2HCFs) refer to those hexacyanoferrates in which the nitrogen atom in the cyano moiety coordinates to two different metal ions: M1 and M2. It can be regarded that a part of the lattice sites, which should be occupied by M1 in the absence of M2, are substituted by M2 when M2 also exists in the preparation solution. Although several papers on M1M2HCFs have been reported, 15-17 the number of papers about M1M2HCFs was far fewer than the number about single component MHCF. [1][2][3][4][5][6][7][8][9][10][11][12][13][14] To our best knowledge, no paper on electrocatalytical properties of M1M2HCF-modified electrodes has been published.In our recent papers, [18][19][20] hybrid copper-cobalt hexacyanoferrate (CuCoHCF) films were electrodeposited on a substrate electrode and characterized by electrochemistry, XRD, ICP-AES and XPS. The results indicated that CuCoHCF was a substitution-type hybrid hexacyanoferrate in which the cyano moiety with its C atom coordinating to Fe(II), and N atom coordinating to Cu(II) or Co(II), formed the edge of a cubic lattice. Fe(II) occupied a part of the lattice sites and the remaining lattice sites were taken by Cu(II) and Co(II). Electrochemistry showed that CuCoHCF had excellent electrochemical reversibility and stability over a wide pH range of 4 -10. Comparative voltammetric studies showed different electrochemical properties from that of single component CoHCF and CuHCF. CuCoHCF film-modified electrode exhibited obvious electrocatalysis for both reduction and oxidation of hydrogen peroxide and the oxidation of NO2 -.Hydroxylamine, a derivative of ammonium, is known as a kind of reducing agent widely used in industry and pharmacy. It is one of the intermediate products of nitrogen-cycle and plays an important role in life science. For example, hydroxylamine is a well-known mutagen, which induces highly specific mutations with the nucleic acid cytosine, and is a moderately toxic substance that has been known to cause both reversible and irreversible physiological changes associated with methemoglobinemia. 21,22 Moreover, some hydroxylamine derivatives also constitute a great part of anticancer drugs. 23 Many methods have been developed for the determination of hydroxylamine because of its toxicity, biological functions and broad industrial utilizations. Kolasa has reviewed traditional methods. 24 More recently, electrochemical detection (ECD), 25,26 spectrophotometric, 27 chromatographic 28,29 methods and some combinations of them such as HPLC-ECD, 30 CE (capillary electrophoresis)-ECD 31 have been successfully applied to the determination of...

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Section: -11mentioning

confidence: 99%

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confidence: 99%

Electrocatalytic Oxidation of Hydroxylamine on Glassy Carbon Electrodes Modified by Hybrid Copper-Cobalt Hexacyanoferrate Films

Cui

Lin

2002

ANAL. SCI.

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“…13,14,27 The CV peak gradually reduces on repetitive cycling due to the loss of NiHCF. In 1 mM KCl plus 0.5 M HCl medium, the peak current caused by NiHCF/Au decreases by about 26% (for cathodic peak) and 46% (for anodic peak) after 10 circles at a scan rate 20 mV/s.…”

Section: Influence Of the Ph And The Stability Of The Nihcf Filmmentioning

confidence: 99%

“…6,12 Among them, nickel hexacyanoferrate (NiHCF) film has a better potential response, which can be further improved by adapting certain preparation procedures and optimizing the film composition. [12][13][14][15] For example, a Ag(I)-stabilized Ni(II)-hexacyanoferrate film can be obtained by adding Ag(I) to the mixture of K3Fe(CN)6 and NiCl2, which gives improved selectivity for potassium. 12 The substrate also affects the formation, structure and property of NiHCF film.…”

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Electrochemical Characteristics of Thin Nickel Hexacyanoferrate Films Formed on Gold and Thiol Self-Assembled Monolayers Modified Gold Electrodes

2001

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Nickel hexacyanoferrate (NiHCF) film was prepared and characterized on gold and thiol self-assembled monolayers (SAMs)-modified gold electrodes. It was found that the film exhibited some different electrochemical characteristics compared with that found on a carbon electrode. In the presence of K + , the film exhibited a redox peak at about 0.5 V. The peak potential shifted linearly with the K + concentration over the range of about 0.1 mM -0.1 M with slopes of 54 -60 mV per log[K + ]. However, in solutions containing Na + , Li + or NH4 + ion the film did not generate well-defined peaks, or even a visible redox peak. Therefore, the film showed a selective potential response to K + . The voltammetric behavior of NiHCF film varied with thiols, the preparation procedure and the solution pH. Under certain conditions, the characteristics of the film could be improved to some extent.

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“…In particular, the preparation and characteristics of ferrocyanide films have been reported by several groups (Bacskai et al 1995;Sinha 1982a, 1982b;Humphrey et al 1984Humphrey et al , 1987Itaya et al 1986; Lasky and Buttry 1988;Schneemeyer et al 1985;Sinha et al 1984). Nickel ferrocyanide films, M,NiFe(CN), (M = Na, K), have been prepared by dipping a nickel electrode into a Fe(CN)g3 solution, which oxidizes the metal electrode to precipitate the electroactive film, or more commonly by electrochemically oxidizing the nickel electrode in a Fe(CN)g3 solution (Bacskai et al 1995;Sinha et al 1984).…”

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confidence: 99%

Electrically switched cesium ion exchange. FY 1997 annual report

Lilga¹,

Orth²,

Sukamto³

1997

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An electrochemical method for metal ion separations, called Electrically Switched Ion Exchange (ESIX), is described in this report. In this method, direct oxidation and reduction of an electroactive film attached to an electrode surface is used to load and unload the film with alkali metal cations. The electroactive films under investigation are nickel hexacyanoferrates, which are deposited on the surface by applying an anodic potential to a nickel electrode in a solution containing the ferricyanide anion. Reported film preparation procedures have been modified to produce films with improved capacity and stability. Electrochemical behavior of the derivatized electrodes has been investigated with use of cyclic voltammetry and chronocoulometry. The films show selectivity for cesium in concentrated sodium solutions. Raman spectroscopy has been used to directly monitor changes in oxidation state of the film and imaging experiments have demonstrated that the redox reactions are spatially homogeneous across the film. Requirements

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Mechanisms of charge transfer at the chemically derivatized interface: the Ni/[NiII(CN)FeII/III(CN)5]2-/1- system as an electrocatalyst

Cited by 137 publications

References 0 publications

Electrocatalytic Oxidation of Hydroxylamine on Glassy Carbon Electrodes Modified by Hybrid Copper-Cobalt Hexacyanoferrate Films

Electrocatalytic Oxidation of Hydroxylamine on Glassy Carbon Electrodes Modified by Hybrid Copper-Cobalt Hexacyanoferrate Films

Electrochemical Characteristics of Thin Nickel Hexacyanoferrate Films Formed on Gold and Thiol Self-Assembled Monolayers Modified Gold Electrodes

Electrically switched cesium ion exchange. FY 1997 annual report

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