Light intensity dependence of the kinetics of the photocatalytic oxidation of nitrogen(ii) oxide at the surface of TiO2
| Autor: | Detlef W. Bahnemann, Ralf Dillert, Astrid Engel, Patrick Lindner, Julia Große |
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| Jazyk: | angličtina |
| Rok vydání: | 2013 |
| Předmět: |
ultraviolet radiation
Dewey Decimal Classification::500 | Naturwissenschaften::540 | Chemie Materials science surface property Surface Properties Ultraviolet Rays Inorganic chemistry Oxide General Physics and Astronomy chemistry.chemical_element radiation exposure chemistry Oxygen chemistry.chemical_compound Physical and Theoretical Chemistry Pollutant Titanium photochemistry nitrous oxide catalysis titanium dioxide article Photochemical Processes Nitrogen Light intensity Kinetics Titanium dioxide ddc:540 Photocatalysis oxidation reduction reaction Oxidation-Reduction |
| Zdroj: | Physical Chemistry Chemical Physics 15 (2013), Nr. 48 |
| DOI: | 10.15488/2180 |
| Popis: | Air pollution by nitrogen oxides represents a serious environmental problem in urban areas where numerous sources of these pollutants are concentrated. One approach to reduce the concentration of these air pollutants is their light-induced oxidation in the presence of molecular oxygen and a photocatalytically active building material which uses titanium dioxide as the photocatalyst. Herein, results of an investigation concerning the influence of the photon flux and the pollutant concentration on the rate of the photocatalytic oxidation of nitrogen(ii) oxide in the presence of molecular oxygen and UV(A) irradiated titanium dioxide powder are presented. A Langmuir-Hinshelwood-type rate law for the photocatalytic NO oxidation inside the photoreactor comprising four kinetic parameters is derived being suitable to describe the influence of the pollutant concentration and the photon flux on the rate of the photocatalytic oxidation of nitrogen(ii) oxide. © 2013 the Owner Societies. |
| Databáze: | OpenAIRE |
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