| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 10241249 | Applied Catalysis B: Environmental | 2005 | 11 Pages |
Abstract
All the TiO2/Cr-MCM-41 catalysts deactivate gradually under visible light due to the reduction of Cr6+ in the catalysts. TPR and temperature program oxidation (TPO) results clearly indicated that the average oxidation state of chromium in TiO2/Cr-MCM-41 (Si/Cr = 20) was +2 after 23 h of photoreaction. The reduced chromium in the photocatalyst can be completely reoxidized by heating the catalyst at 450 °C for 3 h.
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Catalysis
Authors
Bo Sun, Ettireddy P. Reddy, Panagiotis G. Smirniotis,