Abstract
In this study, TiO2 was successfully coated on Stober silica beads followed by depositing Au nanoparticles on this core-shell structure. The size of the Au nanoparticles was well controlled in the range of 2 - 7 nm. This composite exhibited high thermal stability. When used as a model catalyst for oxidation of CO at low temperatures, the Au/TiO2/SiO2 showed a much higher catalytic activity than the Au/SiO2 and Au/TiO2(P25) catalysts.
Original language | English |
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Pages (from-to) | 1025-1028 |
Number of pages | 4 |
Journal | Key Engineering Materials |
Volume | 334-335 II |
State | Published - 2007 |
Externally published | Yes |
Keywords
- CO oxidation
- Nano-sized Au particles
- SiO(core)-TiO(shell) structure