Electrocatalysis at conductive diamond modified by noble-metal oxides

Article Abstract:

Conductive boron-doped diamond supports were used for achieving the generalization of some of the interpretations of heterogeneous catalysis in relation to the oxide film electrocatalysts and studying the catalytic properties of noble-metal oxide modifications from the level of submonolayer to a few monolayers. The results indicate the presence of distinct oxidation state changes because the cyclic voltammograms at RuO2 and IrO2 thick-film electrodes show poorly resolved peaks that convolute into broad flat maxima.

Monomolecular films, Chemistry, Physical and theoretical, Physical chemistry, Metallic oxides, Metal oxides

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Physicochemical properties of fluorinated diamond electrodes

Article Abstract:

A characterization of diamond film electrodes surface-modified by fluorine insertion, through CF4 plasma treatment, is carried out. X-ray photoelectron spectroscopy (XPS) showed that the CF4-plasma treatment results in the formation of a chemical bond between the fluorine and the carbon atoms of the diamond crystals.

Gem Diamonds, All Other Nonmetallic Mineral Mining, Miscellaneous nonmetallic minerals, Usage, Diamonds, X-ray spectroscopy, Fluorine compounds, Chemical properties, Diamond crystals

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Heterogeneous electron-transfer rate constants for Fe(H2O)(sub 6)(super 3+/2+) at metal oxide electrodes

Article Abstract:

Noncoordinating perchlorate is used to probe the electrochemical behavior of different IrO(sub 2) based electrodes, pure oxide electrodes as well as IrO(sub 2)-Sno(sub 2) mixtures are investigated. The result shows that the electrode material strongly affects the electrochemical response.

Iron compounds, Electrochemistry, Electrochemical analysis

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