A composite of clay, cement, and wood as natural support material for the immobilization of commercial titania (P25, P90, PC500, C-TiO2) towards photocatalytic phenol degradation
| Autor: | L. Morjène, Fadhel Aloulou, Reinhard Schomäcker, Michael Schwarze, Minoo Tasbihi, Mongi Seffen |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Cement
Pollutant Environmental Engineering Materials science Composite number 02 engineering and technology 010501 environmental sciences 021001 nanoscience & nanotechnology 01 natural sciences Catalysis chemistry.chemical_compound Adsorption chemistry Chemical engineering Photocatalysis Phenol Degradation (geology) 0210 nano-technology 0105 earth and related environmental sciences Water Science and Technology |
| Zdroj: | Water Science and Technology. 81:1882-1893 |
| ISSN: | 1996-9732 0273-1223 |
| DOI: | 10.2166/wst.2020.244 |
| Popis: | Different types of commercial titania (P25, P90, PC500, and C-TiO2) were immobilized as single or mixed photocatalyst onto the surface of a natural support material made of cement, clay, and wood fibers. The successful immobilization was studied by different techniques showing a composite material with the mechanical properties of the support material and the photocatalytic behavior of the immobilized titania. The supported photocatalyst showed high mechanical stability and was applied to the photocatalytic degradation of phenol as a model pollutant under UV light irradiation. As the most active photocatalytic material, a mixture PC500 and P90 (comp-PC500/P90) was identified with an apparent pseudo first-order kinetic rate constant (kapp) of 0.010 min−1 at a degradation efficiency of 100%. The catalyst was used several times and showed minor loss in activity during four runs due to degradation intermediates adsorbed to the surface, shown by a color change from white to yellow. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|