Comparison of the efficiency of immobilized and suspended systems in photocatalytic degradation
| Autor: | H.J. Panneman, H. Buwalda, M.F.J. Dijkstra, A.A.C.M. Beenackers, A. Michorius, Jozef G. M. Winkelman |
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| Přispěvatelé: | Chemische Technologie, Faculty of Science and Engineering |
| Rok vydání: | 2001 |
| Předmět: |
SEMICONDUCTOR PHOTOCATALYSIS
Formic acid Inorganic chemistry chemistry.chemical_element Portable water purification General Chemistry Heterogeneous catalysis Oxygen Catalysis Scavenger (chemistry) chemistry.chemical_compound chemistry Mass transfer HETEROGENEOUS PHOTOCATALYSIS Photocatalysis CONTAMINANTS WATER-PURIFICATION REACTOR quantum yield photocatalysis water purification KINETICS |
| Zdroj: | Catalysis Today, 66(2-4), 487-494. ELSEVIER SCIENCE BV University of Groningen |
| ISSN: | 0920-5861 |
| DOI: | 10.1016/s0920-5861(01)00257-7 |
| Popis: | The photocatalytic degradation of formic acid in suspended and immobilized systems, with and without oxygen addition, are compared. In the immobilized system, oxygen addition to the reactor appeared to increase the efficiency, not only because oxygen acts as an efficient electron scavenger, but also due to increased mass transfer in this two-phase reactor. This immobilized system had an efficiency comparable to that of the suspended system. The addition of oxygen to the immobilized system appeared to increase the quantum yield with a factor 4, whereas the addition of oxygen to the suspended system hardly had any effect. |
| Databáze: | OpenAIRE |
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