General expression of the linear potential sweep voltammogram for a surface redox reaction with interactions between the adsorbed molecules

Laviron, E.; Roullier, L.

doi:10.1016/s0022-0728(80)80496-7

Cited by 263 publications

(173 citation statements)

References 31 publications

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“…205,[242][243][244][245][246] In light of the above discussion, the rate of charge percolation in the oxide layers may be quantified in terms of a charge transport diffusion coefficient D CT , reflecting either the rate of electron 'hopping' or the diffusion of protons/hydroxide ions via a rapid Grotthus type mechanism. 17 In this sense, Laviron [247][248][249][250][251][252] and Aoki 253,254 have developed useful models allowing the voltammetric response to be analysed quantitatively as a function of sweep rate. In particular, Laviron and coworkers [247][248][249][250][251][252] derived general expressions for the cathodic or anodic voltammetric peaks for any degree of reversibility,…”

Section: Charge Transport In Transition Metal Oxidesmentioning

confidence: 99%

“…17 In this sense, Laviron [247][248][249][250][251][252] and Aoki 253,254 have developed useful models allowing the voltammetric response to be analysed quantitatively as a function of sweep rate. In particular, Laviron and coworkers [247][248][249][250][251][252] derived general expressions for the cathodic or anodic voltammetric peaks for any degree of reversibility,…”

Section: Charge Transport In Transition Metal Oxidesmentioning

confidence: 99%

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Redox and electrochemical water splitting catalytic properties of hydrated metal oxide modified electrodes

Doyle

Godwin

Brandon

et al. 2013

Phys. Chem. Chem. Phys.

521

565

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This paper presents a review of the redox and electrocatalytic properties of transition metal oxide electrodes, paying particular attention to the oxygen evolution reaction. Metal oxide materials may be prepared using a variety of methods, resulting in a diverse range of redox and electrocatalytic properties. Here we describe the most common synthetic routes and the important factors relevant to their preparation. The redox and electrocatalytic properties of the resulting oxide layers are ascribed to the presence of extended networks of hydrated surface bound oxymetal complexes termed surfaquo groups. This interpretation presents a possible unifying concept in water oxidation catalysis -bridging the fields of heterogeneous electrocatalysis and homogeneous molecular catalysis. In contextOver the past 50 years considerable research efforts have been devoted to the realisation of efficient, economical and renewable energy sources. Metal oxide materials have played a large part in this drive with demonstrated applications at both the research and commercial level. Their use in areas such as batteries, fuel cells and water electrolysis has resulted in the development of materials with a diverse range of structural and chemical properties. In all cases, understanding the fundamental electrochemistry of the material can be invaluable for rational design and optimisation. This review focuses on the redox, charge transport and electrocatalytic properties of transition metal oxide electrodes as they pertain to the electrolytic splitting of water. Particular emphasis is placed on the nature of the active surface which is interpreted in terms of hydrated interlinked oxymetal complexes termed surfaquo groups. In this way, the review seeks to bridge the gap between heterogeneous electrocatalysis and homogeneous molecular catalysis for water oxidation, areas of considerable modern interest and activity.

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Section: Charge Transport In Transition Metal Oxidesmentioning

confidence: 99%

Section: Charge Transport In Transition Metal Oxidesmentioning

confidence: 99%

Redox and electrochemical water splitting catalytic properties of hydrated metal oxide modified electrodes

Doyle

Godwin

Brandon

et al. 2013

Phys. Chem. Chem. Phys.

521

565

View full text Add to dashboard Cite

show abstract

“…For a redox monolayer modified electrode, the peak potentials can be represented by 22,23 Epc = E˚′ -log ,…”

Section: It Is Well Known That the God Redox Involves Fad In Itmentioning

confidence: 99%

Direct Electron Transfer of Glucose Oxidase Molecules Adsorbed onto Carbon Nanotube Powder Microelectrode

et al. 2002

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“…Similarly, the negative charge of PQQ increases with pH: -1 (1 < pH < 4), -2 (4 < pH < 5) and -3 (pH > 5) [7]. The charged groups have repulsive interactions, which can distort the shape of the peaks [17]. When cystamine and carbodiimide coupling was used for immobilization, the reversibility of the reaction increased towards alkaline conditions, where the surface also has less charge [11].…”

Section: Resultsmentioning

confidence: 99%

Simple immobilization of pyrroloquinoline quinone on few-walled carbon nanotubes

Kanninen

Ruiz

Kallio

et al. 2010

Electrochemistry Communications

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Pyrroloquinoline quinone (PQQ) was immobilized on glassy-carbon electrodes (GCE) modified with single-walled carbon nanotubes (SWCNT), few-walled carbon nanotubes (FWCNT) and carbon black (Vulcan XC72R). Modified electrodes were prepared by drop-casting. Immobilization was achieved with an extremely simple dipping procedure and without any further modification to the electrodes. Electrochemical performance of the electrodes was studied by cyclic voltammetry and spectroelectrochemistry. FWCNT adsorbed 30 times more PQQ than the other carbon materials. Compared to more complicated immobilization methods, PQQ/FWCNT/GCE showed well-defined electrochemistry in a considerably wide pH area from 2 to 12. The dipping process is affected by pH and electrostatic forces. At dipping pH 9.5, where both FWCNTs and -2 -PQQ have strong negative charge, the adsorption was halved compared to dipping pH 2, where the charges are smaller.

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General expression of the linear potential sweep voltammogram for a surface redox reaction with interactions between the adsorbed molecules

Cited by 263 publications

References 31 publications

Redox and electrochemical water splitting catalytic properties of hydrated metal oxide modified electrodes

Redox and electrochemical water splitting catalytic properties of hydrated metal oxide modified electrodes

Direct Electron Transfer of Glucose Oxidase Molecules Adsorbed onto Carbon Nanotube Powder Microelectrode

Simple immobilization of pyrroloquinoline quinone on few-walled carbon nanotubes

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