Silver-Zeolite-Modified Electrodes: An Intrazeolite Electron Transport Mechanism

Li, Jianwei; Pfanner, Klaus; Calzaferri, Gion

doi:10.1021/j100007a049

Cited by 101 publications

(79 citation statements)

References 8 publications

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“…Ag-Nf film shows uniform distribution of Ag NPs ranging from 30 to 40 nm ( Figures 2a and 2b respectively. GC/Ag-Nf electrode shows a pair of redox peaks which corresponds to the oxidation and reduction of Ag NPs at 0.31 and 0.13 V respectively [37,57]. GC/Au-Nf electrode shows formation and reduction of surface gold oxide at 1.16 and 0.92 V respectively [46,58,59].…”

Section: Preparation Of Modified Electrodesmentioning

confidence: 99%

Influence of Metal Nanoparticles on the Electrocatalytic Oxidation of Glucose by Poly(Ni^IIteta) Modified Electrodes

Azad

Ganesan

2010

Electroanalysis

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Conductive polymeric [Ni II (teta)] 2þ (teta ¼ C-meso-5,5,7,12,12,14-hexamethyl-1,4,8,11-tetra-azacyclotetradecane) films (poly(Ni)) have been deposited on the surface of glassy carbon (GC), Nafion (Nf) modified GC (GC/Nf) and Nf stabilized Ag and Au nanoparticles (NPs) modified GC (GC/Ag-Nf and GC/Au-Nf) electrodes. The cyclic voltammogram of the resulting electrodes, show a well defined redox peak due to oxidation and reduction of poly(Ni) system in 0.1 M NaOH. They show electrocatalytic activity towards the oxidation of glucose. AFM studies reveal the formation of poly(Ni) film on the modified electrodes. Presence of metal NPs increases electron transfer rate and electrocatalytic oxidation current by improving the communication within the Nf and poly(Ni) films. In the presence of metal NPs, 4 fold increase in current for glucose oxidation was observed.

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Section: Preparation Of Modified Electrodesmentioning

confidence: 99%

Influence of Metal Nanoparticles on the Electrocatalytic Oxidation of Glucose by Poly(Ni^IIteta) Modified Electrodes

Azad

Ganesan

2010

Electroanalysis

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“…It has been clearly established that the electrochemical response of small ionexchangeable cations is mainly due to extrazeolite electron transfer as ion exchange for the electrolyte cation is expected to occur immediately after contacting the electrode to the solution [68,120,121]. On the other hand, potential shifts with respect to solution-phases species (as observed in cyclic voltammetry [122,123]) seem to indicate possible existence of intrazeolite electron transfer, at least at zeolite boundaries or when using spatially-arranged mediators at electrode/zeolite interfaces [124]. In the case of large encapsulated species physically entrapped in the zeolite cages, the intensity of the electrochemical response was often lower and mostly accepted to be due to boundary associated redox probes [125,126].…”

Section: Electrochemical Response Of Redox Probes At Zmesmentioning

confidence: 99%

Electroanalytical Applications of Microporous Zeolites and Mesoporous (Organo)Silicas: Recent Trends

Walcarius¹

2008

Electroanalysis

147

101

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Microporous zeolites and ordered mesoporous (organo)silicas have been widely used as electrode modifiers because of their attractive properties (ion exchange and size selectivity of zeolites, well ordered nanoreactors containing a high number of widely accessible active centers in mesoporous (organo)silicas). These properties have been intelligently combined to selected redox processes to improve the response of the resulting modified electrodes or to design novel electrochemical detection schemes. This up-to-date review provides the recent advances made in the electroanalytical applications of zeolite modified electrodes and discusses the interest of ordered mesoporous (organo)silica materials in electroanalysis.

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“…Mallouk, Bein, and Calzaferri attempted the attachment of zeolite microcrystals on substrates as a means to modify electrode surfaces [23][24][25] and grow continuous zeolite films. 26,27 However, the coverage, close packing, and uniform orientation were not satisfactory.…”

Section: Monolayer Assembly With Covalent Linkagesmentioning

confidence: 99%

Organization of Zeolite Microcrystals for Production of Functional Materials

2006

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This Account summarizes various methods of organizing zeolite microcrystals into two-dimensional functional entities such as monolayers, multilayers, and patterned monolayers on various substrates and three-dimensional functional entities such as microballs and protein-zeolite composite fibrils. In the case of monolayer assembly, various types of linkages and substrates, factors that govern the rate, degree of coverage, degree of close packing, degree of uniform orientation, and average binding strength between each crystal and the substrate are described. The current and future applications of the organized products are also discussed.

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Silver-Zeolite-Modified Electrodes: An Intrazeolite Electron Transport Mechanism

Cited by 101 publications

References 8 publications

Influence of Metal Nanoparticles on the Electrocatalytic Oxidation of Glucose by Poly(Ni^IIteta) Modified Electrodes

Influence of Metal Nanoparticles on the Electrocatalytic Oxidation of Glucose by Poly(Ni^IIteta) Modified Electrodes

Electroanalytical Applications of Microporous Zeolites and Mesoporous (Organo)Silicas: Recent Trends

Organization of Zeolite Microcrystals for Production of Functional Materials

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Silver-Zeolite-Modified Electrodes: An Intrazeolite Electron Transport Mechanism

Cited by 101 publications

References 8 publications

Influence of Metal Nanoparticles on the Electrocatalytic Oxidation of Glucose by Poly(NiIIteta) Modified Electrodes

Influence of Metal Nanoparticles on the Electrocatalytic Oxidation of Glucose by Poly(NiIIteta) Modified Electrodes

Electroanalytical Applications of Microporous Zeolites and Mesoporous (Organo)Silicas: Recent Trends

Organization of Zeolite Microcrystals for Production of Functional Materials

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Product

Resources

About

Influence of Metal Nanoparticles on the Electrocatalytic Oxidation of Glucose by Poly(Ni^IIteta) Modified Electrodes

Influence of Metal Nanoparticles on the Electrocatalytic Oxidation of Glucose by Poly(Ni^IIteta) Modified Electrodes