Mechanisms of two electrochemical oscillations of different types, observed for H2O2 reduction on a Pt electrode in the presence of a small amount of halide ions

Article Abstract:

The mechanisms of oscillations C and D are studied in detail using impedance analyses and in-situ light reflectance measurements as well as mathematical simulations. The study concluded from the experiments and mathematical simulation that both oscillations C and D are classified into hidden negative differential resistance (HNDR) oscillators.

Analysis, Oxidation-reduction reaction, Oxidation reduction reactions, Electrochemistry

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Water- and oxygen-induced decay kinetics of photogenerated electrons in TiO2 and Pt/TiO2: a time-resolved infrared absorption study

Article Abstract:

The electron decay is traced in TiO2 and Pt/TiO2 exposed to O2 and H2O atmosphere to examine the reactivity of the electrons in photochemical reactions. It is concluded that when Pt/TiO2 was exposed to water, the oxidation and reduction steps of the water splitting reaction affected the electron decay kinetics.

Titanium compounds, Electrons, Photochemistry, Atomic properties

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Thermodynamic consistency in microkinetic development of surface reaction mechanisms

Article Abstract:

Thermodynamic constraints of reaction networks are reviewed and expressions applicable to surface reactions are derived. Various optimization approaches to ensure thermodynamic consistency are discussed and demonstrated with a specific example of surface reaction mechanism of H2 oxidation on Pt.

Industrial Gas Manufacturing, Industrial gases, Hydrogen, Thermal properties, Thermodynamics

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