Electrochemical reduction of dioxygen on carbon nanotubes–dihexadecyl phosphate film electrode

Wang, Fang

doi:10.1016/j.jelechem.2005.03.012

Cited by 29 publications

(20 citation statements)

References 47 publications

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“…Carbon nanotubes were easily dispersed into water in the presence of dihexadecyl hydrogen phosphate (DHP) [7][8][9]. The hydrophobic chains of the surfactant can wrap around the CNTs and the hydrophilic group can interact with water and finally CNTs were dispersed homogeneously into water with the aid of DHP [9,10].…”

Section: Introductionmentioning

confidence: 99%

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Electroreduction of oxygen on multi-walled carbon nanotubes modified highly oriented pyrolytic graphite electrodes in alkaline solution

Jürmann

Tammeveski

2006

Journal of Electroanalytical Chemistry

101

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Section: Introductionmentioning

confidence: 99%

“…It has also been noted that surfactants have the ability to separate individual nanotubes from the bundles [11]. The reduction of O 2 has been studied on stable and uniform SWCNT-DHP films in alkaline solution suggesting two 2e À reduction steps of O 2 [7,8].…”

Section: Introductionmentioning

confidence: 99%

Electroreduction of oxygen on multi-walled carbon nanotubes modified highly oriented pyrolytic graphite electrodes in alkaline solution

Jürmann

Tammeveski

2006

Journal of Electroanalytical Chemistry

101

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“…It can be seen that the limiting current increases with increasing rotation. If we assume an electrode of first order in reactant and negligible contribution from the film diffusion resistance to the measured current density, the voltammetric response of a porous RDE is described by the Koutecky -Levich (K -L) equation (equation 4) used to determine the number of electrons (n) involved in the reaction [50]:…”

Section: Analysis Of Oxygen Reduction At Eppge-mwcntnanofepcmentioning

confidence: 99%

“…where i kin and i lev are the kinetic and diffusion limited current densities respectively, F is Faraday constant (96485 C mol [50]), w is the rotation rate in rpm, 0.21 is used when w is expressed in rpm, k O2' is the kinetic rate constant for the catalyzed oxygen reduction reaction and G is the surface concentration of the adsorbed species (ca. 1.8 Â 10 À8 mol cm…”

Section: Analysis Of Oxygen Reduction At Eppge-mwcntnanofepcmentioning

confidence: 99%

“…Assuming a transfer coefficient (a) of 0.5, the number of electron (n) involved in the rate-determining step (RDS) would be 2. Although Beck [54] proposed a 2-electron process as the RDS in acidic medium, RDS involving a 2-electron process is not usually favored [50,55]. Indeed, several workers, have observed FePc complexes to give small Tafel slopes at low potentials and also promote the 4-electron reduction of oxygen at that potential [30,56,57].…”

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Heterogeneous Electron Transfer and Oxygen Reduction Reaction at Nanostructured Iron(II) Phthalocyanine and Its MWCNTs Nanocomposites

Mamuru

Ozoemena

2010

Electroanalysis

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Electron transfer and oxygen reduction dynamics at nanostructured iron(II) phthalocyanine/multi-walled carbon nanotubes composite supported on an edge plane pyrolytic graphite electrode (EPPGE-MWCNT-nanoFePc) platform have been reported. All the electrodes showed the category 3 diffusional behaviour according to the Davies -Compton theoretical framework. Both MWCNTs and MWCNT-nanoFePc showed huge current responses compared to the other electrodes, suggesting the redox processes of trapped redox species within the porous layers of MWCNTs. Electron transfer process is much easier at the EPPGE-MWCNT and EPPGE-MWCNT-nanoFePc compared to the other electrodes. The best response for oxygen reduction reaction was at the EPPGE-MWCNTnanoFePc, yielding a 4-electron process.

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Efficient Oxygen Reduction Reaction Using Ruthenium Tetrakis(diaquaplatinum)Octacarboxyphthalocyanine Catalyst Supported on MWCNT Platform

2010

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Electrocatalytic reduction of molecular oxygen in alkaline solution using a novel ruthenium tetrakis(diaquaplatinum)octacarboxyphthalocyanine (RuOCPcPt) electrocatalyst supported on multi-walled carbon nanotube electrode has been described. We show that the oxygen reduction activity follows a direct 4-electron transfer process at high kinetic rate constant, 3.57 10 À2 cm s À1. [14][15][16]. Despite the popularity of ruthenium-based electrocatalysts for ORR, as elegantly reviewed recently by Lee and Popov [1], the use of ruthenium phthalocyanine (RuPc) complexes in ORR is virtually unknown. MPc complexes integrated or supported on carbon nanotubes (CNTs) improve electrocatalytic performance of electrodes [17]. In this communication, we report the electrocatalytic reduction of oxygen using a novel ruthenium tetrakis(diaquaplatinum)octacarboxy-phthalocyanine (abbreviated here as RuOCPcPt, Figure 1) as catalyst on a basal plane pyrolytic graphite electrode (BPPGE) platform pre-modified with or without multiwalled carbon nanotubes (MWCNTs). We clearly show that the BPPGE-MWCNTs-RuOCPcPt electrode can enhance the electrocatalytic performance of the ORR in al- Fig. 1. Structure of ruthenium tetrakis(diaquaplatinum) octacarboxy phthalocyanine. Keywords

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Electrochemical reduction of dioxygen on carbon nanotubes–dihexadecyl phosphate film electrode

Cited by 29 publications

References 47 publications

Electroreduction of oxygen on multi-walled carbon nanotubes modified highly oriented pyrolytic graphite electrodes in alkaline solution

Electroreduction of oxygen on multi-walled carbon nanotubes modified highly oriented pyrolytic graphite electrodes in alkaline solution

Heterogeneous Electron Transfer and Oxygen Reduction Reaction at Nanostructured Iron(II) Phthalocyanine and Its MWCNTs Nanocomposites

Efficient Oxygen Reduction Reaction Using Ruthenium Tetrakis(diaquaplatinum)Octacarboxyphthalocyanine Catalyst Supported on MWCNT Platform

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