Photocatalytic Steady-State Methylviologen Oxidation in Air-Saturated TiO2 Aqueous Suspension: Initial Photonic Efficiency and Initial Oxidation Rate as a Function of Methylviologen Concentration and Light Intensity Full article
Journal |
Journal of Photochemistry and Photobiology A: Chemistry
ISSN: 1010-6030 , E-ISSN: 1873-2666 |
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Output data | Year: 2000, Volume: 134, Number: 3, Pages: 219-226 Pages count : 8 DOI: 10.1016/S1010-6030(00)00254-9 | ||
Tags | Methylviologen, OH radical, Oxidation, Photocatalyst, TiO2 | ||
Authors |
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Affiliations |
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Funding (2)
1 | Swedish Research Council | 281-95-782 |
2 | Фонд "Интеграция" |
Abstract:
Photocatalytic methylviologen oxidation in TiO2 aqueous suspension has been studied. The initial photonic efficiency has been found to increase dramatically as the light intensity decreases, approaching 34% at extremely low light intensity. The maximum photonic efficiency does not depend on methylviologen concentration and pH of the solution. Increasing the surface methylviologen concentration by increasing the methylviologen concentration in the solution or varying pH causes the photonic efficiency comes to its maximum value at a higher intensity of incident light. The light intensity affects the shape of the dependencies of initial rate versus methylviologen concentration. The model explaining the experimental data has been examined. Two parameters of this model appear to be able to characterize the material of TiO2 photocatalysts in a quite wide range of conditions.
Cite:
Martyanov I.N.
, Savinov E.N.
Photocatalytic Steady-State Methylviologen Oxidation in Air-Saturated TiO2 Aqueous Suspension: Initial Photonic Efficiency and Initial Oxidation Rate as a Function of Methylviologen Concentration and Light Intensity
Journal of Photochemistry and Photobiology A: Chemistry. 2000. V.134. N3. P.219-226. DOI: 10.1016/S1010-6030(00)00254-9 WOS Scopus РИНЦ
Photocatalytic Steady-State Methylviologen Oxidation in Air-Saturated TiO2 Aqueous Suspension: Initial Photonic Efficiency and Initial Oxidation Rate as a Function of Methylviologen Concentration and Light Intensity
Journal of Photochemistry and Photobiology A: Chemistry. 2000. V.134. N3. P.219-226. DOI: 10.1016/S1010-6030(00)00254-9 WOS Scopus РИНЦ
Dates:
Submitted: | Oct 25, 1999 |
Accepted: | Feb 28, 2000 |
Published online: | Jun 2, 2000 |
Published print: | Jun 14, 2000 |
Identifiers:
Web of science | WOS:000087508600011 |
Scopus | 2-s2.0-0009154842 |
Elibrary | 13341421 |
Chemical Abstracts | 2000:361117 |
Chemical Abstracts (print) | 133:185389 |
OpenAlex | W1991483864 |