Abstract
Photocatalytic degradation of acetaldehyde and its photocatalytic mechanisms over Au/TiO 2 core-shell nano catalyst were, for the first time, investigated under UV and visible light irradiation. The results indicate that Au/TiO 2 core-shell catalyst shows higher activity for the oxidation of acetaldehyde into CO 2 under both UV and visible light irradiation comparing with P-25 and metal-deposited TiO 2 photocatalysts. When Au/TiO 2 core-shell catalyst is excited by UV light, the Au-core acts as the sink to restore the separated electrons, thus to improve the photoinduced charge separation; while under visible light irradiation, the mechanism can be understood as the coordinate effect of the plasmon resonance of Au-core particles and the formation of an impurity energy level induced byTiO 2-xFO x.
| Original language | English |
|---|---|
| Pages (from-to) | 5891-5897 |
| Number of pages | 7 |
| Journal | Journal of nanoscience and nanotechnology |
| Volume | 9 |
| Issue number | 10 |
| DOIs | |
| State | Published - 2009.10 |
Keywords
- Acetaldehyde
- Core-shell structure
- Mechanism
- Photocatalysis
Quacquarelli Symonds(QS) Subject Topics
- Materials Science
- Engineering - Chemical
- Chemistry
- Physics & Astronomy
- Biological Sciences
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