Reduction mechanism of O2 in DMSO and metal oxide thin film formation: CdO case study

R. Henríquez; P. Grez; E. Muoz; E. A. Dalchiele; R. Marotti; H. Gómez

doi:10.1149/1.3133842

Reduction mechanism of O₂ in DMSO and metal oxide thin film formation: CdO case study

R. Henríquez, P. Grez, E. Muoz, E. A. Dalchiele, R. Marotti, H. Gómez

INSTITUTE OF CHEMISTRY

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Abstract

The electrochemical reduction of O₂ in a dimethyl sulfoxide (DMSO) solution onto a glassy carbon substrate at 423 K has been studied. Electrochemical potentiodynamic studies show that the reduction process is controlled by O₂ diffusion and reveal a two-step mechanism. The first one corresponds to an electrochemical step which gives the superoxide ion that, in a second chemical step, forms the peroxide ions through a disproportion reaction. The proposed mechanism can be used for the formation of semiconductor CdO thin films. Here, results for CdO film formation, obtained in a direct way without the presence of Cd (OH)₂ mixtures, are presented.

Original language	English
Pages (from-to)	H288-H291
Journal	Electrochemical and Solid-State Letters
Volume	12
Issue number	8
DOIs	https://doi.org/10.1149/1.3133842
State	Published - 2009

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abstract = "The electrochemical reduction of O2 in a dimethyl sulfoxide (DMSO) solution onto a glassy carbon substrate at 423 K has been studied. Electrochemical potentiodynamic studies show that the reduction process is controlled by O2 diffusion and reveal a two-step mechanism. The first one corresponds to an electrochemical step which gives the superoxide ion that, in a second chemical step, forms the peroxide ions through a disproportion reaction. The proposed mechanism can be used for the formation of semiconductor CdO thin films. Here, results for CdO film formation, obtained in a direct way without the presence of Cd (OH)2 mixtures, are presented.",

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T1 - Reduction mechanism of O2 in DMSO and metal oxide thin film formation

T2 - CdO case study

AU - Henríquez, R.

AU - Grez, P.

AU - Muoz, E.

AU - Dalchiele, E. A.

AU - Marotti, R.

AU - Gómez, H.

PY - 2009

Y1 - 2009

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AB - The electrochemical reduction of O2 in a dimethyl sulfoxide (DMSO) solution onto a glassy carbon substrate at 423 K has been studied. Electrochemical potentiodynamic studies show that the reduction process is controlled by O2 diffusion and reveal a two-step mechanism. The first one corresponds to an electrochemical step which gives the superoxide ion that, in a second chemical step, forms the peroxide ions through a disproportion reaction. The proposed mechanism can be used for the formation of semiconductor CdO thin films. Here, results for CdO film formation, obtained in a direct way without the presence of Cd (OH)2 mixtures, are presented.

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SP - H288-H291

JO - Electrochemical and Solid-State Letters

JF - Electrochemical and Solid-State Letters

IS - 8

ER -

Reduction mechanism of O₂ in DMSO and metal oxide thin film formation: CdO case study

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