Abstract
The formation of gold nanoparticles in mordenites has been studied by the methods of FTIR spectroscopy of adsorbed CO and diffuse reflectance UV-visible spectroscopy. Different states of ionic and metallic gold were detected in the zeolite cavities and on the external surface of the zeolite - Au+ and Au3+ ions, charged clusters Aunδ+, and neutral nanoparticles Aum. The relative amount of these states depends on the method of sample preparation, type of redox treatment and the SiO2/Al2O3 molar ratio.
Original language | English |
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Pages (from-to) | 2321-2326 |
Number of pages | 6 |
Journal | International Journal of Modern Physics B |
Volume | 19 |
Issue number | 15-17 |
DOIs | |
Publication status | Published - 10 Jul 2005 |
Keywords
- FTIR
- Gold catalysts
- Nanoparticles
- UV-visible spectroscopy
- Zeolites
ASJC Scopus subject areas
- Physics and Astronomy (miscellaneous)
- Condensed Matter Physics
- Electronic, Optical and Magnetic Materials
- Statistical and Nonlinear Physics
- Mathematical Physics